summaryrefslogtreecommitdiffstats
path: root/core/java/android/app/Activity.java
blob: 77cbe0a869c46ecd0ef550944ff5da4363de06ed (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802
3803
3804
3805
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822
3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
4064
4065
4066
4067
4068
4069
4070
4071
4072
4073
4074
4075
4076
4077
4078
4079
4080
4081
4082
4083
4084
4085
4086
4087
4088
4089
4090
4091
4092
4093
4094
4095
4096
4097
4098
4099
4100
4101
4102
4103
4104
4105
4106
4107
4108
4109
4110
4111
4112
4113
4114
4115
4116
4117
4118
4119
4120
4121
4122
4123
4124
4125
4126
4127
4128
4129
4130
4131
4132
4133
4134
4135
4136
4137
4138
4139
4140
4141
4142
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4154
4155
4156
4157
4158
4159
4160
4161
4162
4163
4164
4165
4166
4167
4168
4169
4170
4171
4172
4173
4174
4175
4176
4177
4178
4179
4180
4181
4182
4183
4184
4185
4186
4187
4188
4189
4190
4191
4192
4193
4194
4195
4196
4197
4198
4199
4200
4201
4202
4203
4204
4205
4206
4207
4208
4209
4210
4211
4212
4213
4214
4215
4216
4217
4218
4219
4220
4221
4222
4223
4224
4225
4226
4227
4228
4229
4230
4231
4232
4233
4234
4235
4236
4237
4238
4239
4240
4241
4242
4243
4244
4245
4246
4247
4248
4249
4250
4251
4252
4253
4254
4255
4256
4257
4258
4259
4260
4261
4262
4263
4264
4265
4266
4267
4268
4269
4270
4271
4272
4273
4274
4275
4276
4277
4278
4279
4280
4281
4282
4283
4284
4285
4286
4287
4288
4289
4290
4291
4292
4293
4294
4295
4296
4297
4298
4299
4300
4301
4302
4303
4304
4305
4306
4307
4308
4309
4310
4311
4312
4313
4314
4315
4316
4317
4318
4319
4320
4321
4322
4323
4324
4325
4326
4327
4328
4329
4330
4331
4332
4333
4334
4335
4336
4337
4338
4339
4340
4341
4342
4343
4344
4345
4346
4347
4348
4349
4350
4351
4352
4353
4354
4355
4356
4357
4358
4359
4360
4361
4362
4363
4364
4365
4366
4367
4368
4369
4370
4371
4372
4373
4374
4375
4376
4377
4378
4379
4380
4381
4382
4383
4384
4385
4386
4387
4388
4389
4390
4391
4392
4393
4394
4395
4396
4397
4398
4399
4400
4401
4402
4403
4404
4405
4406
4407
4408
4409
4410
4411
4412
4413
4414
4415
4416
4417
4418
4419
4420
4421
4422
4423
4424
4425
4426
4427
4428
4429
4430
4431
4432
4433
4434
4435
4436
4437
4438
4439
4440
4441
4442
4443
4444
4445
4446
4447
4448
4449
4450
4451
4452
4453
4454
4455
4456
/*
 * Copyright (C) 2006 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package android.app;

import com.android.internal.app.ActionBarImpl;
import com.android.internal.policy.PolicyManager;

import android.content.ComponentCallbacks;
import android.content.ComponentName;
import android.content.ContentResolver;
import android.content.Context;
import android.content.CursorLoader;
import android.content.IIntentSender;
import android.content.Intent;
import android.content.IntentSender;
import android.content.SharedPreferences;
import android.content.pm.ActivityInfo;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.drawable.Drawable;
import android.media.AudioManager;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.Handler;
import android.os.IBinder;
import android.os.Looper;
import android.os.Parcelable;
import android.os.RemoteException;
import android.text.Selection;
import android.text.SpannableStringBuilder;
import android.text.TextUtils;
import android.text.method.TextKeyListener;
import android.util.AttributeSet;
import android.util.Config;
import android.util.EventLog;
import android.util.Log;
import android.util.SparseArray;
import android.view.ActionMode;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.ContextThemeWrapper;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnCreateContextMenuListener;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.view.ViewManager;
import android.view.Window;
import android.view.WindowManager;
import android.view.accessibility.AccessibilityEvent;
import android.widget.AdapterView;
import android.widget.FrameLayout;

import java.io.FileDescriptor;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

/**
 * An activity is a single, focused thing that the user can do.  Almost all
 * activities interact with the user, so the Activity class takes care of
 * creating a window for you in which you can place your UI with
 * {@link #setContentView}.  While activities are often presented to the user
 * as full-screen windows, they can also be used in other ways: as floating
 * windows (via a theme with {@link android.R.attr#windowIsFloating} set)
 * or embedded inside of another activity (using {@link ActivityGroup}).
 *
 * There are two methods almost all subclasses of Activity will implement:
 * 
 * <ul>
 *     <li> {@link #onCreate} is where you initialize your activity.  Most
 *     importantly, here you will usually call {@link #setContentView(int)}
 *     with a layout resource defining your UI, and using {@link #findViewById}
 *     to retrieve the widgets in that UI that you need to interact with
 *     programmatically.
 * 
 *     <li> {@link #onPause} is where you deal with the user leaving your
 *     activity.  Most importantly, any changes made by the user should at this
 *     point be committed (usually to the
 *     {@link android.content.ContentProvider} holding the data).
 * </ul>
 *
 * <p>To be of use with {@link android.content.Context#startActivity Context.startActivity()}, all
 * activity classes must have a corresponding
 * {@link android.R.styleable#AndroidManifestActivity &lt;activity&gt;}
 * declaration in their package's <code>AndroidManifest.xml</code>.</p>
 * 
 * <p>The Activity class is an important part of an application's overall lifecycle,
 * and the way activities are launched and put together is a fundamental
 * part of the platform's application model. For a detailed perspective on the structure of
 * Android applications and lifecycles, please read the <em>Dev Guide</em> document on 
 * <a href="{@docRoot}guide/topics/fundamentals.html">Application Fundamentals</a>.</p>
 * 
 * <p>Topics covered here:
 * <ol>
 * <li><a href="#Fragments">Fragments</a>
 * <li><a href="#ActivityLifecycle">Activity Lifecycle</a>
 * <li><a href="#ConfigurationChanges">Configuration Changes</a>
 * <li><a href="#StartingActivities">Starting Activities and Getting Results</a>
 * <li><a href="#SavingPersistentState">Saving Persistent State</a>
 * <li><a href="#Permissions">Permissions</a>
 * <li><a href="#ProcessLifecycle">Process Lifecycle</a>
 * </ol>
 * 
 * <a name="Fragments"></a>
 * <h3>Fragments</h3>
 *
 * <p>Starting with {@link android.os.Build.VERSION_CODES#HONEYCOMB}, Activity
 * implementations can make use of the {@link Fragment} class to better
 * modularize their code, build more sophisticated user interfaces for larger
 * screens, and help scale their application between small and large screens.
 *
 * <a name="ActivityLifecycle"></a>
 * <h3>Activity Lifecycle</h3>
 *
 * <p>Activities in the system are managed as an <em>activity stack</em>.
 * When a new activity is started, it is placed on the top of the stack
 * and becomes the running activity -- the previous activity always remains
 * below it in the stack, and will not come to the foreground again until
 * the new activity exits.</p>
 * 
 * <p>An activity has essentially four states:</p>
 * <ul>
 *     <li> If an activity in the foreground of the screen (at the top of
 *         the stack),
 *         it is <em>active</em> or  <em>running</em>. </li>
 *     <li>If an activity has lost focus but is still visible (that is, a new non-full-sized
 *         or transparent activity has focus on top of your activity), it 
 *         is <em>paused</em>. A paused activity is completely alive (it
 *         maintains all state and member information and remains attached to
 *         the window manager), but can be killed by the system in extreme
 *         low memory situations.
 *     <li>If an activity is completely obscured by another activity,
 *         it is <em>stopped</em>. It still retains all state and member information,
 *         however, it is no longer visible to the user so its window is hidden
 *         and it will often be killed by the system when memory is needed
 *         elsewhere.</li>
 *     <li>If an activity is paused or stopped, the system can drop the activity
 *         from memory by either asking it to finish, or simply killing its
 *         process.  When it is displayed again to the user, it must be
 *         completely restarted and restored to its previous state.</li>
 * </ul>
 *
 * <p>The following diagram shows the important state paths of an Activity.
 * The square rectangles represent callback methods you can implement to
 * perform operations when the Activity moves between states.  The colored
 * ovals are major states the Activity can be in.</p>
 * 
 * <p><img src="../../../images/activity_lifecycle.png"
 *      alt="State diagram for an Android Activity Lifecycle." border="0" /></p>
 * 
 * <p>There are three key loops you may be interested in monitoring within your
 * activity:
 * 
 * <ul>
 * <li>The <b>entire lifetime</b> of an activity happens between the first call
 * to {@link android.app.Activity#onCreate} through to a single final call
 * to {@link android.app.Activity#onDestroy}.  An activity will do all setup
 * of "global" state in onCreate(), and release all remaining resources in
 * onDestroy().  For example, if it has a thread running in the background
 * to download data from the network, it may create that thread in onCreate()
 * and then stop the thread in onDestroy().
 * 
 * <li>The <b>visible lifetime</b> of an activity happens between a call to
 * {@link android.app.Activity#onStart} until a corresponding call to
 * {@link android.app.Activity#onStop}.  During this time the user can see the
 * activity on-screen, though it may not be in the foreground and interacting
 * with the user.  Between these two methods you can maintain resources that
 * are needed to show the activity to the user.  For example, you can register
 * a {@link android.content.BroadcastReceiver} in onStart() to monitor for changes
 * that impact your UI, and unregister it in onStop() when the user an no
 * longer see what you are displaying.  The onStart() and onStop() methods
 * can be called multiple times, as the activity becomes visible and hidden
 * to the user.
 * 
 * <li>The <b>foreground lifetime</b> of an activity happens between a call to
 * {@link android.app.Activity#onResume} until a corresponding call to
 * {@link android.app.Activity#onPause}.  During this time the activity is
 * in front of all other activities and interacting with the user.  An activity
 * can frequently go between the resumed and paused states -- for example when
 * the device goes to sleep, when an activity result is delivered, when a new
 * intent is delivered -- so the code in these methods should be fairly
 * lightweight.
 * </ul>
 * 
 * <p>The entire lifecycle of an activity is defined by the following
 * Activity methods.  All of these are hooks that you can override
 * to do appropriate work when the activity changes state.  All
 * activities will implement {@link android.app.Activity#onCreate}
 * to do their initial setup; many will also implement
 * {@link android.app.Activity#onPause} to commit changes to data and
 * otherwise prepare to stop interacting with the user.  You should always
 * call up to your superclass when implementing these methods.</p>
 *
 * </p>
 * <pre class="prettyprint">
 * public class Activity extends ApplicationContext {
 *     protected void onCreate(Bundle savedInstanceState);
 *
 *     protected void onStart();
 *     
 *     protected void onRestart();
 *
 *     protected void onResume();
 *
 *     protected void onPause();
 *
 *     protected void onStop();
 *
 *     protected void onDestroy();
 * }
 * </pre>
 *
 * <p>In general the movement through an activity's lifecycle looks like
 * this:</p>
 *
 * <table border="2" width="85%" align="center" frame="hsides" rules="rows">
 *     <colgroup align="left" span="3" />
 *     <colgroup align="left" />
 *     <colgroup align="center" />
 *     <colgroup align="center" />
 *
 *     <thead>
 *     <tr><th colspan="3">Method</th> <th>Description</th> <th>Killable?</th> <th>Next</th></tr>
 *     </thead>
 *
 *     <tbody>
 *     <tr><th colspan="3" align="left" border="0">{@link android.app.Activity#onCreate onCreate()}</th>
 *         <td>Called when the activity is first created.
 *             This is where you should do all of your normal static set up:
 *             create views, bind data to lists, etc.  This method also
 *             provides you with a Bundle containing the activity's previously
 *             frozen state, if there was one.
 *             <p>Always followed by <code>onStart()</code>.</td>
 *         <td align="center">No</td>
 *         <td align="center"><code>onStart()</code></td>
 *     </tr>
 *
 *     <tr><td rowspan="5" style="border-left: none; border-right: none;">&nbsp;&nbsp;&nbsp;&nbsp;</td>
 *         <th colspan="2" align="left" border="0">{@link android.app.Activity#onRestart onRestart()}</th>
 *         <td>Called after your activity has been stopped, prior to it being
 *             started again.
 *             <p>Always followed by <code>onStart()</code></td>
 *         <td align="center">No</td>
 *         <td align="center"><code>onStart()</code></td>
 *     </tr>
 *
 *     <tr><th colspan="2" align="left" border="0">{@link android.app.Activity#onStart onStart()}</th>
 *         <td>Called when the activity is becoming visible to the user.
 *             <p>Followed by <code>onResume()</code> if the activity comes
 *             to the foreground, or <code>onStop()</code> if it becomes hidden.</td>
 *         <td align="center">No</td>
 *         <td align="center"><code>onResume()</code> or <code>onStop()</code></td>
 *     </tr>
 *
 *     <tr><td rowspan="2" style="border-left: none;">&nbsp;&nbsp;&nbsp;&nbsp;</td>
 *         <th align="left" border="0">{@link android.app.Activity#onResume onResume()}</th>
 *         <td>Called when the activity will start
 *             interacting with the user.  At this point your activity is at
 *             the top of the activity stack, with user input going to it.
 *             <p>Always followed by <code>onPause()</code>.</td>
 *         <td align="center">No</td>
 *         <td align="center"><code>onPause()</code></td>
 *     </tr>
 *
 *     <tr><th align="left" border="0">{@link android.app.Activity#onPause onPause()}</th>
 *         <td>Called when the system is about to start resuming a previous
 *             activity.  This is typically used to commit unsaved changes to
 *             persistent data, stop animations and other things that may be consuming
 *             CPU, etc.  Implementations of this method must be very quick because
 *             the next activity will not be resumed until this method returns.
 *             <p>Followed by either <code>onResume()</code> if the activity
 *             returns back to the front, or <code>onStop()</code> if it becomes
 *             invisible to the user.</td>
 *         <td align="center"><font color="#800000"><strong>Pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB}</strong></font></td>
 *         <td align="center"><code>onResume()</code> or<br>
 *                 <code>onStop()</code></td>
 *     </tr>
 *
 *     <tr><th colspan="2" align="left" border="0">{@link android.app.Activity#onStop onStop()}</th>
 *         <td>Called when the activity is no longer visible to the user, because
 *             another activity has been resumed and is covering this one.  This
 *             may happen either because a new activity is being started, an existing
 *             one is being brought in front of this one, or this one is being
 *             destroyed.
 *             <p>Followed by either <code>onRestart()</code> if
 *             this activity is coming back to interact with the user, or
 *             <code>onDestroy()</code> if this activity is going away.</td>
 *         <td align="center"><font color="#800000"><strong>Yes</strong></font></td>
 *         <td align="center"><code>onRestart()</code> or<br>
 *                 <code>onDestroy()</code></td>
 *     </tr>
 *
 *     <tr><th colspan="3" align="left" border="0">{@link android.app.Activity#onDestroy onDestroy()}</th>
 *         <td>The final call you receive before your
 *             activity is destroyed.  This can happen either because the
 *             activity is finishing (someone called {@link Activity#finish} on
 *             it, or because the system is temporarily destroying this
 *             instance of the activity to save space.  You can distinguish
 *             between these two scenarios with the {@link
 *             Activity#isFinishing} method.</td>
 *         <td align="center"><font color="#800000"><strong>Yes</strong></font></td>
 *         <td align="center"><em>nothing</em></td>
 *     </tr>
 *     </tbody>
 * </table>
 *
 * <p>Note the "Killable" column in the above table -- for those methods that
 * are marked as being killable, after that method returns the process hosting the
 * activity may killed by the system <em>at any time</em> without another line
 * of its code being executed.  Because of this, you should use the
 * {@link #onPause} method to write any persistent data (such as user edits)
 * to storage.  In addition, the method
 * {@link #onSaveInstanceState(Bundle)} is called before placing the activity
 * in such a background state, allowing you to save away any dynamic instance
 * state in your activity into the given Bundle, to be later received in
 * {@link #onCreate} if the activity needs to be re-created.  
 * See the <a href="#ProcessLifecycle">Process Lifecycle</a>
 * section for more information on how the lifecycle of a process is tied
 * to the activities it is hosting.  Note that it is important to save
 * persistent data in {@link #onPause} instead of {@link #onSaveInstanceState}
 * because the later is not part of the lifecycle callbacks, so will not
 * be called in every situation as described in its documentation.</p>
 *
 * <p class="note">Be aware that these semantics will change slightly between
 * applications targeting platforms starting with {@link android.os.Build.VERSION_CODES#HONEYCOMB}
 * vs. those targeting prior platforms.  Starting with Honeycomb, an application
 * is not in the killable state until its {@link #onStop} has returned.  This
 * impacts when {@link #onSaveInstanceState(Bundle)} may be called (it may be
 * safely called after {@link #onPause()} and allows and application to safely
 * wait until {@link #onStop()} to save persistent state.</p>
 *
 * <p>For those methods that are not marked as being killable, the activity's
 * process will not be killed by the system starting from the time the method
 * is called and continuing after it returns.  Thus an activity is in the killable
 * state, for example, between after <code>onPause()</code> to the start of
 * <code>onResume()</code>.</p>
 *
 * <a name="ConfigurationChanges"></a>
 * <h3>Configuration Changes</h3>
 * 
 * <p>If the configuration of the device (as defined by the
 * {@link Configuration Resources.Configuration} class) changes,
 * then anything displaying a user interface will need to update to match that
 * configuration.  Because Activity is the primary mechanism for interacting
 * with the user, it includes special support for handling configuration
 * changes.</p>
 * 
 * <p>Unless you specify otherwise, a configuration change (such as a change
 * in screen orientation, language, input devices, etc) will cause your
 * current activity to be <em>destroyed</em>, going through the normal activity
 * lifecycle process of {@link #onPause},
 * {@link #onStop}, and {@link #onDestroy} as appropriate.  If the activity
 * had been in the foreground or visible to the user, once {@link #onDestroy} is
 * called in that instance then a new instance of the activity will be
 * created, with whatever savedInstanceState the previous instance had generated
 * from {@link #onSaveInstanceState}.</p>
 * 
 * <p>This is done because any application resource,
 * including layout files, can change based on any configuration value.  Thus
 * the only safe way to handle a configuration change is to re-retrieve all
 * resources, including layouts, drawables, and strings.  Because activities
 * must already know how to save their state and re-create themselves from
 * that state, this is a convenient way to have an activity restart itself
 * with a new configuration.</p>
 * 
 * <p>In some special cases, you may want to bypass restarting of your
 * activity based on one or more types of configuration changes.  This is
 * done with the {@link android.R.attr#configChanges android:configChanges}
 * attribute in its manifest.  For any types of configuration changes you say
 * that you handle there, you will receive a call to your current activity's
 * {@link #onConfigurationChanged} method instead of being restarted.  If
 * a configuration change involves any that you do not handle, however, the
 * activity will still be restarted and {@link #onConfigurationChanged}
 * will not be called.</p>
 * 
 * <a name="StartingActivities"></a>
 * <h3>Starting Activities and Getting Results</h3>
 *
 * <p>The {@link android.app.Activity#startActivity}
 * method is used to start a
 * new activity, which will be placed at the top of the activity stack.  It
 * takes a single argument, an {@link android.content.Intent Intent},
 * which describes the activity
 * to be executed.</p>
 *
 * <p>Sometimes you want to get a result back from an activity when it
 * ends.  For example, you may start an activity that lets the user pick
 * a person in a list of contacts; when it ends, it returns the person
 * that was selected.  To do this, you call the
 * {@link android.app.Activity#startActivityForResult(Intent, int)} 
 * version with a second integer parameter identifying the call.  The result 
 * will come back through your {@link android.app.Activity#onActivityResult}
 * method.</p> 
 *
 * <p>When an activity exits, it can call
 * {@link android.app.Activity#setResult(int)}
 * to return data back to its parent.  It must always supply a result code,
 * which can be the standard results RESULT_CANCELED, RESULT_OK, or any
 * custom values starting at RESULT_FIRST_USER.  In addition, it can optionally
 * return back an Intent containing any additional data it wants.  All of this
 * information appears back on the
 * parent's <code>Activity.onActivityResult()</code>, along with the integer
 * identifier it originally supplied.</p>
 *
 * <p>If a child activity fails for any reason (such as crashing), the parent
 * activity will receive a result with the code RESULT_CANCELED.</p>
 *
 * <pre class="prettyprint">
 * public class MyActivity extends Activity {
 *     ...
 *
 *     static final int PICK_CONTACT_REQUEST = 0;
 *
 *     protected boolean onKeyDown(int keyCode, KeyEvent event) {
 *         if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) {
 *             // When the user center presses, let them pick a contact.
 *             startActivityForResult(
 *                 new Intent(Intent.ACTION_PICK,
 *                 new Uri("content://contacts")),
 *                 PICK_CONTACT_REQUEST);
 *            return true;
 *         }
 *         return false;
 *     }
 *
 *     protected void onActivityResult(int requestCode, int resultCode,
 *             Intent data) {
 *         if (requestCode == PICK_CONTACT_REQUEST) {
 *             if (resultCode == RESULT_OK) {
 *                 // A contact was picked.  Here we will just display it
 *                 // to the user.
 *                 startActivity(new Intent(Intent.ACTION_VIEW, data));
 *             }
 *         }
 *     }
 * }
 * </pre>
 *
 * <a name="SavingPersistentState"></a>
 * <h3>Saving Persistent State</h3>
 *
 * <p>There are generally two kinds of persistent state than an activity
 * will deal with: shared document-like data (typically stored in a SQLite
 * database using a {@linkplain android.content.ContentProvider content provider})
 * and internal state such as user preferences.</p>
 *
 * <p>For content provider data, we suggest that activities use a
 * "edit in place" user model.  That is, any edits a user makes are effectively
 * made immediately without requiring an additional confirmation step.
 * Supporting this model is generally a simple matter of following two rules:</p>
 *
 * <ul>
 *     <li> <p>When creating a new document, the backing database entry or file for
 *             it is created immediately.  For example, if the user chooses to write
 *             a new e-mail, a new entry for that e-mail is created as soon as they
 *             start entering data, so that if they go to any other activity after
 *             that point this e-mail will now appear in the list of drafts.</p>
 *     <li> <p>When an activity's <code>onPause()</code> method is called, it should
 *             commit to the backing content provider or file any changes the user
 *             has made.  This ensures that those changes will be seen by any other
 *             activity that is about to run.  You will probably want to commit
 *             your data even more aggressively at key times during your
 *             activity's lifecycle: for example before starting a new
 *             activity, before finishing your own activity, when the user
 *             switches between input fields, etc.</p>
 * </ul>
 *
 * <p>This model is designed to prevent data loss when a user is navigating
 * between activities, and allows the system to safely kill an activity (because
 * system resources are needed somewhere else) at any time after it has been
 * paused.  Note this implies
 * that the user pressing BACK from your activity does <em>not</em>
 * mean "cancel" -- it means to leave the activity with its current contents
 * saved away.  Canceling edits in an activity must be provided through
 * some other mechanism, such as an explicit "revert" or "undo" option.</p>
 *
 * <p>See the {@linkplain android.content.ContentProvider content package} for
 * more information about content providers.  These are a key aspect of how
 * different activities invoke and propagate data between themselves.</p>
 *
 * <p>The Activity class also provides an API for managing internal persistent state
 * associated with an activity.  This can be used, for example, to remember
 * the user's preferred initial display in a calendar (day view or week view)
 * or the user's default home page in a web browser.</p>
 *
 * <p>Activity persistent state is managed
 * with the method {@link #getPreferences},
 * allowing you to retrieve and
 * modify a set of name/value pairs associated with the activity.  To use
 * preferences that are shared across multiple application components
 * (activities, receivers, services, providers), you can use the underlying
 * {@link Context#getSharedPreferences Context.getSharedPreferences()} method
 * to retrieve a preferences
 * object stored under a specific name.
 * (Note that it is not possible to share settings data across application
 * packages -- for that you will need a content provider.)</p>
 *
 * <p>Here is an excerpt from a calendar activity that stores the user's
 * preferred view mode in its persistent settings:</p>
 *
 * <pre class="prettyprint">
 * public class CalendarActivity extends Activity {
 *     ...
 *
 *     static final int DAY_VIEW_MODE = 0;
 *     static final int WEEK_VIEW_MODE = 1;
 *
 *     private SharedPreferences mPrefs;
 *     private int mCurViewMode;
 *
 *     protected void onCreate(Bundle savedInstanceState) {
 *         super.onCreate(savedInstanceState);
 *
 *         SharedPreferences mPrefs = getSharedPreferences();
 *         mCurViewMode = mPrefs.getInt("view_mode" DAY_VIEW_MODE);
 *     }
 *
 *     protected void onPause() {
 *         super.onPause();
 * 
 *         SharedPreferences.Editor ed = mPrefs.edit();
 *         ed.putInt("view_mode", mCurViewMode);
 *         ed.commit();
 *     }
 * }
 * </pre>
 * 
 * <a name="Permissions"></a>
 * <h3>Permissions</h3>
 * 
 * <p>The ability to start a particular Activity can be enforced when it is
 * declared in its
 * manifest's {@link android.R.styleable#AndroidManifestActivity &lt;activity&gt;}
 * tag.  By doing so, other applications will need to declare a corresponding
 * {@link android.R.styleable#AndroidManifestUsesPermission &lt;uses-permission&gt;}
 * element in their own manifest to be able to start that activity.
 * 
 * <p>See the <a href="{@docRoot}guide/topics/security/security.html">Security and Permissions</a>
 * document for more information on permissions and security in general.
 * 
 * <a name="ProcessLifecycle"></a>
 * <h3>Process Lifecycle</h3>
 * 
 * <p>The Android system attempts to keep application process around for as
 * long as possible, but eventually will need to remove old processes when
 * memory runs low.  As described in <a href="#ActivityLifecycle">Activity
 * Lifecycle</a>, the decision about which process to remove is intimately
 * tied to the state of the user's interaction with it.  In general, there
 * are four states a process can be in based on the activities running in it,
 * listed here in order of importance.  The system will kill less important
 * processes (the last ones) before it resorts to killing more important
 * processes (the first ones).
 * 
 * <ol>
 * <li> <p>The <b>foreground activity</b> (the activity at the top of the screen
 * that the user is currently interacting with) is considered the most important.
 * Its process will only be killed as a last resort, if it uses more memory
 * than is available on the device.  Generally at this point the device has
 * reached a memory paging state, so this is required in order to keep the user
 * interface responsive.
 * <li> <p>A <b>visible activity</b> (an activity that is visible to the user
 * but not in the foreground, such as one sitting behind a foreground dialog)
 * is considered extremely important and will not be killed unless that is
 * required to keep the foreground activity running.
 * <li> <p>A <b>background activity</b> (an activity that is not visible to
 * the user and has been paused) is no longer critical, so the system may
 * safely kill its process to reclaim memory for other foreground or
 * visible processes.  If its process needs to be killed, when the user navigates
 * back to the activity (making it visible on the screen again), its
 * {@link #onCreate} method will be called with the savedInstanceState it had previously
 * supplied in {@link #onSaveInstanceState} so that it can restart itself in the same
 * state as the user last left it.
 * <li> <p>An <b>empty process</b> is one hosting no activities or other
 * application components (such as {@link Service} or
 * {@link android.content.BroadcastReceiver} classes).  These are killed very
 * quickly by the system as memory becomes low.  For this reason, any
 * background operation you do outside of an activity must be executed in the
 * context of an activity BroadcastReceiver or Service to ensure that the system
 * knows it needs to keep your process around.
 * </ol>
 * 
 * <p>Sometimes an Activity may need to do a long-running operation that exists
 * independently of the activity lifecycle itself.  An example may be a camera
 * application that allows you to upload a picture to a web site.  The upload
 * may take a long time, and the application should allow the user to leave
 * the application will it is executing.  To accomplish this, your Activity
 * should start a {@link Service} in which the upload takes place.  This allows
 * the system to properly prioritize your process (considering it to be more
 * important than other non-visible applications) for the duration of the
 * upload, independent of whether the original activity is paused, stopped,
 * or finished.
 */
public class Activity extends ContextThemeWrapper
        implements LayoutInflater.Factory2,
        Window.Callback, KeyEvent.Callback,
        OnCreateContextMenuListener, ComponentCallbacks {
    private static final String TAG = "Activity";

    /** Standard activity result: operation canceled. */
    public static final int RESULT_CANCELED    = 0;
    /** Standard activity result: operation succeeded. */
    public static final int RESULT_OK           = -1;
    /** Start of user-defined activity results. */
    public static final int RESULT_FIRST_USER   = 1;

    private static final String WINDOW_HIERARCHY_TAG = "android:viewHierarchyState";
    private static final String FRAGMENTS_TAG = "android:fragments";
    private static final String SAVED_DIALOG_IDS_KEY = "android:savedDialogIds";
    private static final String SAVED_DIALOGS_TAG = "android:savedDialogs";
    private static final String SAVED_DIALOG_KEY_PREFIX = "android:dialog_";
    private static final String SAVED_DIALOG_ARGS_KEY_PREFIX = "android:dialog_args_";

    private static class ManagedDialog {
        Dialog mDialog;
        Bundle mArgs;
    }
    private SparseArray<ManagedDialog> mManagedDialogs;

    // set by the thread after the constructor and before onCreate(Bundle savedInstanceState) is called.
    private Instrumentation mInstrumentation;
    private IBinder mToken;
    private int mIdent;
    /*package*/ String mEmbeddedID;
    private Application mApplication;
    /*package*/ Intent mIntent;
    private ComponentName mComponent;
    /*package*/ ActivityInfo mActivityInfo;
    /*package*/ ActivityThread mMainThread;
    Activity mParent;
    boolean mCalled;
    boolean mCheckedForLoaderManager;
    boolean mLoadersStarted;
    private boolean mResumed;
    private boolean mStopped;
    boolean mFinished;
    boolean mStartedActivity;
    /** true if the activity is going through a transient pause */
    /*package*/ boolean mTemporaryPause = false;
    /** true if the activity is being destroyed in order to recreate it with a new configuration */
    /*package*/ boolean mChangingConfigurations = false;
    /*package*/ int mConfigChangeFlags;
    /*package*/ Configuration mCurrentConfig;
    private SearchManager mSearchManager;

    static final class NonConfigurationInstances {
        Object activity;
        HashMap<String, Object> children;
        ArrayList<Fragment> fragments;
        SparseArray<LoaderManagerImpl> loaders;
    }
    /* package */ NonConfigurationInstances mLastNonConfigurationInstances;
    
    private Window mWindow;

    private WindowManager mWindowManager;
    /*package*/ View mDecor = null;
    /*package*/ boolean mWindowAdded = false;
    /*package*/ boolean mVisibleFromServer = false;
    /*package*/ boolean mVisibleFromClient = true;
    /*package*/ ActionBarImpl mActionBar = null;

    private CharSequence mTitle;
    private int mTitleColor = 0;

    final FragmentManagerImpl mFragments = new FragmentManagerImpl();
    
    SparseArray<LoaderManagerImpl> mAllLoaderManagers;
    LoaderManagerImpl mLoaderManager;
    
    private static final class ManagedCursor {
        ManagedCursor(Cursor cursor) {
            mCursor = cursor;
            mReleased = false;
            mUpdated = false;
        }

        private final Cursor mCursor;
        private boolean mReleased;
        private boolean mUpdated;
    }
    private final ArrayList<ManagedCursor> mManagedCursors =
        new ArrayList<ManagedCursor>();

    // protected by synchronized (this) 
    int mResultCode = RESULT_CANCELED;
    Intent mResultData = null;

    private boolean mTitleReady = false;

    private int mDefaultKeyMode = DEFAULT_KEYS_DISABLE;
    private SpannableStringBuilder mDefaultKeySsb = null;
    
    protected static final int[] FOCUSED_STATE_SET = {com.android.internal.R.attr.state_focused};

    private Thread mUiThread;
    final Handler mHandler = new Handler();

    /** Return the intent that started this activity. */
    public Intent getIntent() {
        return mIntent;
    }

    /** 
     * Change the intent returned by {@link #getIntent}.  This holds a 
     * reference to the given intent; it does not copy it.  Often used in 
     * conjunction with {@link #onNewIntent}. 
     *  
     * @param newIntent The new Intent object to return from getIntent 
     * 
     * @see #getIntent
     * @see #onNewIntent
     */ 
    public void setIntent(Intent newIntent) {
        mIntent = newIntent;
    }

    /** Return the application that owns this activity. */
    public final Application getApplication() {
        return mApplication;
    }

    /** Is this activity embedded inside of another activity? */
    public final boolean isChild() {
        return mParent != null;
    }
    
    /** Return the parent activity if this view is an embedded child. */
    public final Activity getParent() {
        return mParent;
    }

    /** Retrieve the window manager for showing custom windows. */
    public WindowManager getWindowManager() {
        return mWindowManager;
    }

    /**
     * Retrieve the current {@link android.view.Window} for the activity.
     * This can be used to directly access parts of the Window API that
     * are not available through Activity/Screen.
     * 
     * @return Window The current window, or null if the activity is not
     *         visual.
     */
    public Window getWindow() {
        return mWindow;
    }

    /**
     * Return the LoaderManager for this fragment, creating it if needed.
     */
    public LoaderManager getLoaderManager() {
        if (mLoaderManager != null) {
            return mLoaderManager;
        }
        mCheckedForLoaderManager = true;
        mLoaderManager = getLoaderManager(-1, mLoadersStarted, true);
        return mLoaderManager;
    }
    
    LoaderManagerImpl getLoaderManager(int index, boolean started, boolean create) {
        if (mAllLoaderManagers == null) {
            mAllLoaderManagers = new SparseArray<LoaderManagerImpl>();
        }
        LoaderManagerImpl lm = mAllLoaderManagers.get(index);
        if (lm == null) {
            if (create) {
                lm = new LoaderManagerImpl(this, started);
                mAllLoaderManagers.put(index, lm);
            }
        } else {
            lm.updateActivity(this);
        }
        return lm;
    }
    
    /**
     * Calls {@link android.view.Window#getCurrentFocus} on the
     * Window of this Activity to return the currently focused view.
     * 
     * @return View The current View with focus or null.
     * 
     * @see #getWindow
     * @see android.view.Window#getCurrentFocus
     */
    public View getCurrentFocus() {
        return mWindow != null ? mWindow.getCurrentFocus() : null;
    }

    @Override
    public int getWallpaperDesiredMinimumWidth() {
        int width = super.getWallpaperDesiredMinimumWidth();
        return width <= 0 ? getWindowManager().getDefaultDisplay().getWidth() : width;
    }

    @Override
    public int getWallpaperDesiredMinimumHeight() {
        int height = super.getWallpaperDesiredMinimumHeight();
        return height <= 0 ? getWindowManager().getDefaultDisplay().getHeight() : height;
    }

    /**
     * Called when the activity is starting.  This is where most initialization
     * should go: calling {@link #setContentView(int)} to inflate the
     * activity's UI, using {@link #findViewById} to programmatically interact
     * with widgets in the UI, calling
     * {@link #managedQuery(android.net.Uri , String[], String, String[], String)} to retrieve
     * cursors for data being displayed, etc.
     * 
     * <p>You can call {@link #finish} from within this function, in
     * which case onDestroy() will be immediately called without any of the rest
     * of the activity lifecycle ({@link #onStart}, {@link #onResume},
     * {@link #onPause}, etc) executing.
     * 
     * <p><em>Derived classes must call through to the super class's
     * implementation of this method.  If they do not, an exception will be
     * thrown.</em></p>
     * 
     * @param savedInstanceState If the activity is being re-initialized after
     *     previously being shut down then this Bundle contains the data it most
     *     recently supplied in {@link #onSaveInstanceState}.  <b><i>Note: Otherwise it is null.</i></b>
     * 
     * @see #onStart
     * @see #onSaveInstanceState
     * @see #onRestoreInstanceState
     * @see #onPostCreate
     */
    protected void onCreate(Bundle savedInstanceState) {
        if (mLastNonConfigurationInstances != null) {
            mAllLoaderManagers = mLastNonConfigurationInstances.loaders;
        }
        if (savedInstanceState != null) {
            Parcelable p = savedInstanceState.getParcelable(FRAGMENTS_TAG);
            mFragments.restoreAllState(p, mLastNonConfigurationInstances != null
                    ? mLastNonConfigurationInstances.fragments : null);
        }
        mFragments.dispatchCreate();
        mCalled = true;
    }

    /**
     * The hook for {@link ActivityThread} to restore the state of this activity.
     *
     * Calls {@link #onSaveInstanceState(android.os.Bundle)} and
     * {@link #restoreManagedDialogs(android.os.Bundle)}.
     *
     * @param savedInstanceState contains the saved state
     */
    final void performRestoreInstanceState(Bundle savedInstanceState) {
        onRestoreInstanceState(savedInstanceState);
        restoreManagedDialogs(savedInstanceState);
    }

    /**
     * This method is called after {@link #onStart} when the activity is
     * being re-initialized from a previously saved state, given here in
     * <var>savedInstanceState</var>.  Most implementations will simply use {@link #onCreate}
     * to restore their state, but it is sometimes convenient to do it here
     * after all of the initialization has been done or to allow subclasses to
     * decide whether to use your default implementation.  The default
     * implementation of this method performs a restore of any view state that
     * had previously been frozen by {@link #onSaveInstanceState}.
     * 
     * <p>This method is called between {@link #onStart} and
     * {@link #onPostCreate}.
     * 
     * @param savedInstanceState the data most recently supplied in {@link #onSaveInstanceState}.
     * 
     * @see #onCreate
     * @see #onPostCreate
     * @see #onResume
     * @see #onSaveInstanceState
     */
    protected void onRestoreInstanceState(Bundle savedInstanceState) {
        if (mWindow != null) {
            Bundle windowState = savedInstanceState.getBundle(WINDOW_HIERARCHY_TAG);
            if (windowState != null) {
                mWindow.restoreHierarchyState(windowState);
            }
        }
    }
    
    /**
     * Restore the state of any saved managed dialogs.
     *
     * @param savedInstanceState The bundle to restore from.
     */
    private void restoreManagedDialogs(Bundle savedInstanceState) {
        final Bundle b = savedInstanceState.getBundle(SAVED_DIALOGS_TAG);
        if (b == null) {
            return;
        }

        final int[] ids = b.getIntArray(SAVED_DIALOG_IDS_KEY);
        final int numDialogs = ids.length;
        mManagedDialogs = new SparseArray<ManagedDialog>(numDialogs);
        for (int i = 0; i < numDialogs; i++) {
            final Integer dialogId = ids[i];
            Bundle dialogState = b.getBundle(savedDialogKeyFor(dialogId));
            if (dialogState != null) {
                // Calling onRestoreInstanceState() below will invoke dispatchOnCreate
                // so tell createDialog() not to do it, otherwise we get an exception
                final ManagedDialog md = new ManagedDialog();
                md.mArgs = b.getBundle(savedDialogArgsKeyFor(dialogId));
                md.mDialog = createDialog(dialogId, dialogState, md.mArgs);
                if (md.mDialog != null) {
                    mManagedDialogs.put(dialogId, md);
                    onPrepareDialog(dialogId, md.mDialog, md.mArgs);
                    md.mDialog.onRestoreInstanceState(dialogState);
                }
            }
        }
    }

    private Dialog createDialog(Integer dialogId, Bundle state, Bundle args) {
        final Dialog dialog = onCreateDialog(dialogId, args);
        if (dialog == null) {
            return null;
        }
        dialog.dispatchOnCreate(state);
        return dialog;
    }

    private static String savedDialogKeyFor(int key) {
        return SAVED_DIALOG_KEY_PREFIX + key;
    }

    private static String savedDialogArgsKeyFor(int key) {
        return SAVED_DIALOG_ARGS_KEY_PREFIX + key;
    }

    /**
     * Called when activity start-up is complete (after {@link #onStart}
     * and {@link #onRestoreInstanceState} have been called).  Applications will
     * generally not implement this method; it is intended for system
     * classes to do final initialization after application code has run.
     * 
     * <p><em>Derived classes must call through to the super class's
     * implementation of this method.  If they do not, an exception will be
     * thrown.</em></p>
     * 
     * @param savedInstanceState If the activity is being re-initialized after
     *     previously being shut down then this Bundle contains the data it most
     *     recently supplied in {@link #onSaveInstanceState}.  <b><i>Note: Otherwise it is null.</i></b>
     * @see #onCreate
     */
    protected void onPostCreate(Bundle savedInstanceState) {
        if (!isChild()) {
            mTitleReady = true;
            onTitleChanged(getTitle(), getTitleColor());
        }
        mCalled = true;
    }

    /**
     * Called after {@link #onCreate} &mdash; or after {@link #onRestart} when  
     * the activity had been stopped, but is now again being displayed to the 
	 * user.  It will be followed by {@link #onResume}.
     *
     * <p><em>Derived classes must call through to the super class's
     * implementation of this method.  If they do not, an exception will be
     * thrown.</em></p>
     * 
     * @see #onCreate
     * @see #onStop
     * @see #onResume
     */
    protected void onStart() {
        mCalled = true;
        
        if (!mLoadersStarted) {
            mLoadersStarted = true;
            if (mLoaderManager != null) {
                mLoaderManager.doStart();
            } else if (!mCheckedForLoaderManager) {
                mLoaderManager = getLoaderManager(-1, mLoadersStarted, false);
            }
            mCheckedForLoaderManager = true;
        }
    }

    /**
     * Called after {@link #onStop} when the current activity is being
     * re-displayed to the user (the user has navigated back to it).  It will
     * be followed by {@link #onStart} and then {@link #onResume}.
     *
     * <p>For activities that are using raw {@link Cursor} objects (instead of
     * creating them through
     * {@link #managedQuery(android.net.Uri , String[], String, String[], String)},
     * this is usually the place
     * where the cursor should be requeried (because you had deactivated it in
     * {@link #onStop}.
     * 
     * <p><em>Derived classes must call through to the super class's
     * implementation of this method.  If they do not, an exception will be
     * thrown.</em></p>
     * 
     * @see #onStop
     * @see #onStart
     * @see #onResume
     */
    protected void onRestart() {
        mCalled = true;
    }

    /**
     * Called after {@link #onRestoreInstanceState}, {@link #onRestart}, or
     * {@link #onPause}, for your activity to start interacting with the user.
     * This is a good place to begin animations, open exclusive-access devices
     * (such as the camera), etc.
     *
     * <p>Keep in mind that onResume is not the best indicator that your activity
     * is visible to the user; a system window such as the keyguard may be in
     * front.  Use {@link #onWindowFocusChanged} to know for certain that your
     * activity is visible to the user (for example, to resume a game).
     *
     * <p><em>Derived classes must call through to the super class's
     * implementation of this method.  If they do not, an exception will be
     * thrown.</em></p>
     * 
     * @see #onRestoreInstanceState
     * @see #onRestart
     * @see #onPostResume
     * @see #onPause
     */
    protected void onResume() {
        mCalled = true;
    }

    /**
     * Called when activity resume is complete (after {@link #onResume} has
     * been called). Applications will generally not implement this method;
     * it is intended for system classes to do final setup after application
     * resume code has run.
     * 
     * <p><em>Derived classes must call through to the super class's
     * implementation of this method.  If they do not, an exception will be
     * thrown.</em></p>
     * 
     * @see #onResume
     */
    protected void onPostResume() {
        final Window win = getWindow();
        if (win != null) win.makeActive();
        mCalled = true;
    }

    /**
     * This is called for activities that set launchMode to "singleTop" in
     * their package, or if a client used the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP}
     * flag when calling {@link #startActivity}.  In either case, when the
     * activity is re-launched while at the top of the activity stack instead
     * of a new instance of the activity being started, onNewIntent() will be
     * called on the existing instance with the Intent that was used to
     * re-launch it. 
     *  
     * <p>An activity will always be paused before receiving a new intent, so 
     * you can count on {@link #onResume} being called after this method. 
     * 
     * <p>Note that {@link #getIntent} still returns the original Intent.  You 
     * can use {@link #setIntent} to update it to this new Intent. 
     * 
     * @param intent The new intent that was started for the activity. 
     *  
     * @see #getIntent
     * @see #setIntent 
     * @see #onResume 
     */
    protected void onNewIntent(Intent intent) {
    }

    /**
     * The hook for {@link ActivityThread} to save the state of this activity.
     *
     * Calls {@link #onSaveInstanceState(android.os.Bundle)}
     * and {@link #saveManagedDialogs(android.os.Bundle)}.
     *
     * @param outState The bundle to save the state to.
     */
    final void performSaveInstanceState(Bundle outState) {
        onSaveInstanceState(outState);
        saveManagedDialogs(outState);
    }

    /**
     * Called to retrieve per-instance state from an activity before being killed
     * so that the state can be restored in {@link #onCreate} or
     * {@link #onRestoreInstanceState} (the {@link Bundle} populated by this method
     * will be passed to both).
     *
     * <p>This method is called before an activity may be killed so that when it
     * comes back some time in the future it can restore its state.  For example,
     * if activity B is launched in front of activity A, and at some point activity
     * A is killed to reclaim resources, activity A will have a chance to save the
     * current state of its user interface via this method so that when the user
     * returns to activity A, the state of the user interface can be restored
     * via {@link #onCreate} or {@link #onRestoreInstanceState}.
     *
     * <p>Do not confuse this method with activity lifecycle callbacks such as
     * {@link #onPause}, which is always called when an activity is being placed
     * in the background or on its way to destruction, or {@link #onStop} which
     * is called before destruction.  One example of when {@link #onPause} and
     * {@link #onStop} is called and not this method is when a user navigates back
     * from activity B to activity A: there is no need to call {@link #onSaveInstanceState}
     * on B because that particular instance will never be restored, so the
     * system avoids calling it.  An example when {@link #onPause} is called and
     * not {@link #onSaveInstanceState} is when activity B is launched in front of activity A:
     * the system may avoid calling {@link #onSaveInstanceState} on activity A if it isn't
     * killed during the lifetime of B since the state of the user interface of
     * A will stay intact.
     *
     * <p>The default implementation takes care of most of the UI per-instance
     * state for you by calling {@link android.view.View#onSaveInstanceState()} on each
     * view in the hierarchy that has an id, and by saving the id of the currently
     * focused view (all of which is restored by the default implementation of
     * {@link #onRestoreInstanceState}).  If you override this method to save additional
     * information not captured by each individual view, you will likely want to
     * call through to the default implementation, otherwise be prepared to save
     * all of the state of each view yourself.
     *
     * <p>If called, this method will occur before {@link #onStop}.  There are
     * no guarantees about whether it will occur before or after {@link #onPause}.
     * 
     * @param outState Bundle in which to place your saved state.
     * 
     * @see #onCreate
     * @see #onRestoreInstanceState
     * @see #onPause
     */
    protected void onSaveInstanceState(Bundle outState) {
        outState.putBundle(WINDOW_HIERARCHY_TAG, mWindow.saveHierarchyState());
        Parcelable p = mFragments.saveAllState();
        if (p != null) {
            outState.putParcelable(FRAGMENTS_TAG, p);
        }
    }

    /**
     * Save the state of any managed dialogs.
     *
     * @param outState place to store the saved state.
     */
    private void saveManagedDialogs(Bundle outState) {
        if (mManagedDialogs == null) {
            return;
        }

        final int numDialogs = mManagedDialogs.size();
        if (numDialogs == 0) {
            return;
        }

        Bundle dialogState = new Bundle();

        int[] ids = new int[mManagedDialogs.size()];

        // save each dialog's bundle, gather the ids
        for (int i = 0; i < numDialogs; i++) {
            final int key = mManagedDialogs.keyAt(i);
            ids[i] = key;
            final ManagedDialog md = mManagedDialogs.valueAt(i);
            dialogState.putBundle(savedDialogKeyFor(key), md.mDialog.onSaveInstanceState());
            if (md.mArgs != null) {
                dialogState.putBundle(savedDialogArgsKeyFor(key), md.mArgs);
            }
        }

        dialogState.putIntArray(SAVED_DIALOG_IDS_KEY, ids);
        outState.putBundle(SAVED_DIALOGS_TAG, dialogState);
    }


    /**
     * Called as part of the activity lifecycle when an activity is going into
     * the background, but has not (yet) been killed.  The counterpart to
     * {@link #onResume}.
     *
     * <p>When activity B is launched in front of activity A, this callback will
     * be invoked on A.  B will not be created until A's {@link #onPause} returns,
     * so be sure to not do anything lengthy here.
     *
     * <p>This callback is mostly used for saving any persistent state the
     * activity is editing, to present a "edit in place" model to the user and
     * making sure nothing is lost if there are not enough resources to start
     * the new activity without first killing this one.  This is also a good
     * place to do things like stop animations and other things that consume a
     * noticeable mount of CPU in order to make the switch to the next activity
     * as fast as possible, or to close resources that are exclusive access
     * such as the camera.
     * 
     * <p>In situations where the system needs more memory it may kill paused
     * processes to reclaim resources.  Because of this, you should be sure
     * that all of your state is saved by the time you return from
     * this function.  In general {@link #onSaveInstanceState} is used to save
     * per-instance state in the activity and this method is used to store
     * global persistent data (in content providers, files, etc.)
     * 
     * <p>After receiving this call you will usually receive a following call
     * to {@link #onStop} (after the next activity has been resumed and
     * displayed), however in some cases there will be a direct call back to
     * {@link #onResume} without going through the stopped state.
     * 
     * <p><em>Derived classes must call through to the super class's
     * implementation of this method.  If they do not, an exception will be
     * thrown.</em></p>
     * 
     * @see #onResume
     * @see #onSaveInstanceState
     * @see #onStop
     */
    protected void onPause() {
        mCalled = true;
    }

    /**
     * Called as part of the activity lifecycle when an activity is about to go
     * into the background as the result of user choice.  For example, when the
     * user presses the Home key, {@link #onUserLeaveHint} will be called, but
     * when an incoming phone call causes the in-call Activity to be automatically
     * brought to the foreground, {@link #onUserLeaveHint} will not be called on
     * the activity being interrupted.  In cases when it is invoked, this method
     * is called right before the activity's {@link #onPause} callback.
     * 
     * <p>This callback and {@link #onUserInteraction} are intended to help
     * activities manage status bar notifications intelligently; specifically,
     * for helping activities determine the proper time to cancel a notfication.
     * 
     * @see #onUserInteraction()
     */
    protected void onUserLeaveHint() {
    }
    
    /**
     * Generate a new thumbnail for this activity.  This method is called before
     * pausing the activity, and should draw into <var>outBitmap</var> the
     * imagery for the desired thumbnail in the dimensions of that bitmap.  It
     * can use the given <var>canvas</var>, which is configured to draw into the
     * bitmap, for rendering if desired.
     * 
     * <p>The default implementation returns fails and does not draw a thumbnail;
     * this will result in the platform creating its own thumbnail if needed.
     * 
     * @param outBitmap The bitmap to contain the thumbnail.
     * @param canvas Can be used to render into the bitmap.
     * 
     * @return Return true if you have drawn into the bitmap; otherwise after
     *         you return it will be filled with a default thumbnail.
     * 
     * @see #onCreateDescription
     * @see #onSaveInstanceState
     * @see #onPause
     */
    public boolean onCreateThumbnail(Bitmap outBitmap, Canvas canvas) {
        return false;
    }

    /**
     * Generate a new description for this activity.  This method is called
     * before pausing the activity and can, if desired, return some textual
     * description of its current state to be displayed to the user.
     * 
     * <p>The default implementation returns null, which will cause you to
     * inherit the description from the previous activity.  If all activities
     * return null, generally the label of the top activity will be used as the
     * description.
     * 
     * @return A description of what the user is doing.  It should be short and
     *         sweet (only a few words).
     * 
     * @see #onCreateThumbnail
     * @see #onSaveInstanceState
     * @see #onPause
     */
    public CharSequence onCreateDescription() {
        return null;
    }

    /**
     * Called when you are no longer visible to the user.  You will next
     * receive either {@link #onRestart}, {@link #onDestroy}, or nothing,
     * depending on later user activity.
     * 
     * <p>Note that this method may never be called, in low memory situations
     * where the system does not have enough memory to keep your activity's
     * process running after its {@link #onPause} method is called.
     * 
     * <p><em>Derived classes must call through to the super class's
     * implementation of this method.  If they do not, an exception will be
     * thrown.</em></p>
     * 
     * @see #onRestart
     * @see #onResume
     * @see #onSaveInstanceState
     * @see #onDestroy
     */
    protected void onStop() {
        mCalled = true;
    }

    /**
     * Perform any final cleanup before an activity is destroyed.  This can
     * happen either because the activity is finishing (someone called
     * {@link #finish} on it, or because the system is temporarily destroying
     * this instance of the activity to save space.  You can distinguish
     * between these two scenarios with the {@link #isFinishing} method.
     * 
     * <p><em>Note: do not count on this method being called as a place for
     * saving data! For example, if an activity is editing data in a content
     * provider, those edits should be committed in either {@link #onPause} or
     * {@link #onSaveInstanceState}, not here.</em> This method is usually implemented to
     * free resources like threads that are associated with an activity, so
     * that a destroyed activity does not leave such things around while the
     * rest of its application is still running.  There are situations where
     * the system will simply kill the activity's hosting process without
     * calling this method (or any others) in it, so it should not be used to
     * do things that are intended to remain around after the process goes
     * away.
     * 
     * <p><em>Derived classes must call through to the super class's
     * implementation of this method.  If they do not, an exception will be
     * thrown.</em></p>
     * 
     * @see #onPause
     * @see #onStop
     * @see #finish
     * @see #isFinishing
     */
    protected void onDestroy() {
        mCalled = true;

        // dismiss any dialogs we are managing.
        if (mManagedDialogs != null) {
            final int numDialogs = mManagedDialogs.size();
            for (int i = 0; i < numDialogs; i++) {
                final ManagedDialog md = mManagedDialogs.valueAt(i);
                if (md.mDialog.isShowing()) {
                    md.mDialog.dismiss();
                }
            }
            mManagedDialogs = null;
        }

        // close any cursors we are managing.
        synchronized (mManagedCursors) {
            int numCursors = mManagedCursors.size();
            for (int i = 0; i < numCursors; i++) {
                ManagedCursor c = mManagedCursors.get(i);
                if (c != null) {
                    c.mCursor.close();
                }
            }
            mManagedCursors.clear();
        }

        // Close any open search dialog
        if (mSearchManager != null) {
            mSearchManager.stopSearch();
        }
    }

    /**
     * Called by the system when the device configuration changes while your
     * activity is running.  Note that this will <em>only</em> be called if
     * you have selected configurations you would like to handle with the
     * {@link android.R.attr#configChanges} attribute in your manifest.  If
     * any configuration change occurs that is not selected to be reported
     * by that attribute, then instead of reporting it the system will stop
     * and restart the activity (to have it launched with the new
     * configuration).
     * 
     * <p>At the time that this function has been called, your Resources
     * object will have been updated to return resource values matching the
     * new configuration.
     * 
     * @param newConfig The new device configuration.
     */
    public void onConfigurationChanged(Configuration newConfig) {
        mCalled = true;

        mFragments.dispatchConfigurationChanged(newConfig);

        if (mWindow != null) {
            // Pass the configuration changed event to the window
            mWindow.onConfigurationChanged(newConfig);
        }
    }
    
    /**
     * If this activity is being destroyed because it can not handle a
     * configuration parameter being changed (and thus its
     * {@link #onConfigurationChanged(Configuration)} method is
     * <em>not</em> being called), then you can use this method to discover
     * the set of changes that have occurred while in the process of being
     * destroyed.  Note that there is no guarantee that these will be
     * accurate (other changes could have happened at any time), so you should
     * only use this as an optimization hint.
     * 
     * @return Returns a bit field of the configuration parameters that are
     * changing, as defined by the {@link android.content.res.Configuration}
     * class.
     */
    public int getChangingConfigurations() {
        return mConfigChangeFlags;
    }
    
    /**
     * Retrieve the non-configuration instance data that was previously
     * returned by {@link #onRetainNonConfigurationInstance()}.  This will
     * be available from the initial {@link #onCreate} and
     * {@link #onStart} calls to the new instance, allowing you to extract
     * any useful dynamic state from the previous instance.
     * 
     * <p>Note that the data you retrieve here should <em>only</em> be used
     * as an optimization for handling configuration changes.  You should always
     * be able to handle getting a null pointer back, and an activity must
     * still be able to restore itself to its previous state (through the
     * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this
     * function returns null.
     * 
     * @return Returns the object previously returned by
     * {@link #onRetainNonConfigurationInstance()}.
     */
    public Object getLastNonConfigurationInstance() {
        return mLastNonConfigurationInstances != null
                ? mLastNonConfigurationInstances.activity : null;
    }
    
    /**
     * Called by the system, as part of destroying an
     * activity due to a configuration change, when it is known that a new
     * instance will immediately be created for the new configuration.  You
     * can return any object you like here, including the activity instance
     * itself, which can later be retrieved by calling
     * {@link #getLastNonConfigurationInstance()} in the new activity
     * instance.
     * 
     * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB}
     * or later, consider instead using a {@link Fragment} with
     * {@link Fragment#setRetainInstance(boolean)
     * Fragment.setRetainInstance(boolean}.</em>
     *
     * <p>This function is called purely as an optimization, and you must
     * not rely on it being called.  When it is called, a number of guarantees
     * will be made to help optimize configuration switching:
     * <ul>
     * <li> The function will be called between {@link #onStop} and
     * {@link #onDestroy}.
     * <li> A new instance of the activity will <em>always</em> be immediately
     * created after this one's {@link #onDestroy()} is called.  In particular,
     * <em>no</em> messages will be dispatched during this time (when the returned
     * object does not have an activity to be associated with).
     * <li> The object you return here will <em>always</em> be available from
     * the {@link #getLastNonConfigurationInstance()} method of the following
     * activity instance as described there.
     * </ul>
     * 
     * <p>These guarantees are designed so that an activity can use this API
     * to propagate extensive state from the old to new activity instance, from
     * loaded bitmaps, to network connections, to evenly actively running
     * threads.  Note that you should <em>not</em> propagate any data that
     * may change based on the configuration, including any data loaded from
     * resources such as strings, layouts, or drawables.
     * 
     * <p>The guarantee of no message handling during the switch to the next
     * activity simplifies use with active objects.  For example if your retained
     * state is an {@link android.os.AsyncTask} you are guaranteed that its
     * call back functions (like {@link android.os.AsyncTask#onPostExecute}) will
     * not be called from the call here until you execute the next instance's
     * {@link #onCreate(Bundle)}.  (Note however that there is of course no such
     * guarantee for {@link android.os.AsyncTask#doInBackground} since that is
     * running in a separate thread.)
     *
     * @return Return any Object holding the desired state to propagate to the
     * next activity instance.
     */
    public Object onRetainNonConfigurationInstance() {
        return null;
    }
    
    /**
     * Retrieve the non-configuration instance data that was previously
     * returned by {@link #onRetainNonConfigurationChildInstances()}.  This will
     * be available from the initial {@link #onCreate} and
     * {@link #onStart} calls to the new instance, allowing you to extract
     * any useful dynamic state from the previous instance.
     * 
     * <p>Note that the data you retrieve here should <em>only</em> be used
     * as an optimization for handling configuration changes.  You should always
     * be able to handle getting a null pointer back, and an activity must
     * still be able to restore itself to its previous state (through the
     * normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this
     * function returns null.
     * 
     * @return Returns the object previously returned by
     * {@link #onRetainNonConfigurationChildInstances()}
     */
    HashMap<String, Object> getLastNonConfigurationChildInstances() {
        return mLastNonConfigurationInstances != null
                ? mLastNonConfigurationInstances.children : null;
    }
    
    /**
     * This method is similar to {@link #onRetainNonConfigurationInstance()} except that
     * it should return either a mapping from  child activity id strings to arbitrary objects,
     * or null.  This method is intended to be used by Activity framework subclasses that control a
     * set of child activities, such as ActivityGroup.  The same guarantees and restrictions apply
     * as for {@link #onRetainNonConfigurationInstance()}.  The default implementation returns null.
     */
    HashMap<String,Object> onRetainNonConfigurationChildInstances() {
        return null;
    }
    
    NonConfigurationInstances retainNonConfigurationInstances() {
        Object activity = onRetainNonConfigurationInstance();
        HashMap<String, Object> children = onRetainNonConfigurationChildInstances();
        ArrayList<Fragment> fragments = mFragments.retainNonConfig();
        boolean retainLoaders = false;
        if (mAllLoaderManagers != null) {
            // prune out any loader managers that were already stopped and so
            // have nothing useful to retain.
            for (int i=mAllLoaderManagers.size()-1; i>=0; i--) {
                LoaderManagerImpl lm = mAllLoaderManagers.valueAt(i);
                if (lm.mRetaining) {
                    retainLoaders = true;
                } else {
                    lm.doDestroy();
                    mAllLoaderManagers.removeAt(i);
                }
            }
        }
        if (activity == null && children == null && fragments == null && !retainLoaders) {
            return null;
        }
        
        NonConfigurationInstances nci = new NonConfigurationInstances();
        nci.activity = activity;
        nci.children = children;
        nci.fragments = fragments;
        nci.loaders = mAllLoaderManagers;
        return nci;
    }
    
    public void onLowMemory() {
        mCalled = true;
        mFragments.dispatchLowMemory();
    }
    
    /**
     * Return the FragmentManager for interacting with fragments associated
     * with this activity.
     */
    public FragmentManager getFragmentManager() {
        return mFragments;
    }

    /**
     * Start a series of edit operations on the Fragments associated with
     * this activity.
     * @deprecated use {@link #getFragmentManager}.
     */
    @Deprecated
    public FragmentTransaction openFragmentTransaction() {
        return mFragments.openTransaction();
    }
    
    void invalidateFragmentIndex(int index) {
        //Log.v(TAG, "invalidateFragmentIndex: index=" + index);
        if (mAllLoaderManagers != null) {
            LoaderManagerImpl lm = mAllLoaderManagers.get(index);
            if (lm != null) {
                lm.doDestroy();
            }
            mAllLoaderManagers.remove(index);
        }
    }
    
    /**
     * Called when a Fragment is being attached to this activity, immediately
     * after the call to its {@link Fragment#onAttach Fragment.onAttach()}
     * method and before {@link Fragment#onCreate Fragment.onCreate()}.
     */
    public void onAttachFragment(Fragment fragment) {
    }
    
    /**
     * Wrapper around
     * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)}
     * that gives the resulting {@link Cursor} to call
     * {@link #startManagingCursor} so that the activity will manage its
     * lifecycle for you.
     * 
     * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB}
     * or later, consider instead using {@link LoaderManager} instead, available
     * via {@link #getLoaderManager()}.</em>
     *
     * @param uri The URI of the content provider to query.
     * @param projection List of columns to return.
     * @param selection SQL WHERE clause.
     * @param sortOrder SQL ORDER BY clause.
     * 
     * @return The Cursor that was returned by query().
     * 
     * @see ContentResolver#query(android.net.Uri , String[], String, String[], String)
     * @see #startManagingCursor
     * @hide
     *
     * @deprecated Use {@link CursorLoader} instead.
     */
    @Deprecated
    public final Cursor managedQuery(Uri uri, String[] projection, String selection,
            String sortOrder) {
        Cursor c = getContentResolver().query(uri, projection, selection, null, sortOrder);
        if (c != null) {
            startManagingCursor(c);
        }
        return c;
    }

    /**
     * Wrapper around
     * {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)}
     * that gives the resulting {@link Cursor} to call
     * {@link #startManagingCursor} so that the activity will manage its
     * lifecycle for you.
     * 
     * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB}
     * or later, consider instead using {@link LoaderManager} instead, available
     * via {@link #getLoaderManager()}.</em>
     *
     * @param uri The URI of the content provider to query.
     * @param projection List of columns to return.
     * @param selection SQL WHERE clause.
     * @param selectionArgs The arguments to selection, if any ?s are pesent
     * @param sortOrder SQL ORDER BY clause.
     * 
     * @return The Cursor that was returned by query().
     * 
     * @see ContentResolver#query(android.net.Uri , String[], String, String[], String)
     * @see #startManagingCursor
     *
     * @deprecated Use {@link CursorLoader} instead.
     */
    @Deprecated
    public final Cursor managedQuery(Uri uri, String[] projection, String selection,
            String[] selectionArgs, String sortOrder) {
        Cursor c = getContentResolver().query(uri, projection, selection, selectionArgs, sortOrder);
        if (c != null) {
            startManagingCursor(c);
        }
        return c;
    }

    /**
     * This method allows the activity to take care of managing the given
     * {@link Cursor}'s lifecycle for you based on the activity's lifecycle.
     * That is, when the activity is stopped it will automatically call
     * {@link Cursor#deactivate} on the given Cursor, and when it is later restarted
     * it will call {@link Cursor#requery} for you.  When the activity is
     * destroyed, all managed Cursors will be closed automatically.
     * 
     * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB}
     * or later, consider instead using {@link LoaderManager} instead, available
     * via {@link #getLoaderManager()}.</em>
     *
     * @param c The Cursor to be managed.
     * 
     * @see #managedQuery(android.net.Uri , String[], String, String[], String)
     * @see #stopManagingCursor
     *
     * @deprecated Use {@link CursorLoader} instead.
     */
    @Deprecated
    public void startManagingCursor(Cursor c) {
        synchronized (mManagedCursors) {
            mManagedCursors.add(new ManagedCursor(c));
        }
    }

    /**
     * Given a Cursor that was previously given to
     * {@link #startManagingCursor}, stop the activity's management of that
     * cursor.
     * 
     * @param c The Cursor that was being managed.
     * 
     * @see #startManagingCursor
     *
     * @deprecated Use {@link CursorLoader} instead.
     */
    @Deprecated
    public void stopManagingCursor(Cursor c) {
        synchronized (mManagedCursors) {
            final int N = mManagedCursors.size();
            for (int i=0; i<N; i++) {
                ManagedCursor mc = mManagedCursors.get(i);
                if (mc.mCursor == c) {
                    mManagedCursors.remove(i);
                    break;
                }
            }
        }
    }

    /**
     * @deprecated As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}
     * this is a no-op.
     * @hide
     */
    @Deprecated
    public void setPersistent(boolean isPersistent) {
    }

    /**
     * Finds a view that was identified by the id attribute from the XML that
     * was processed in {@link #onCreate}.
     *
     * @return The view if found or null otherwise.
     */
    public View findViewById(int id) {
        return getWindow().findViewById(id);
    }
    
    /**
     * Retrieve a reference to this activity's ActionBar.
     *
     * @return The Activity's ActionBar, or null if it does not have one.
     */
    public ActionBar getActionBar() {
        initActionBar();
        return mActionBar;
    }
    
    /**
     * Creates a new ActionBar, locates the inflated ActionBarView,
     * initializes the ActionBar with the view, and sets mActionBar.
     */
    private void initActionBar() {
        Window window = getWindow();
        if (isChild() || !window.hasFeature(Window.FEATURE_ACTION_BAR) || mActionBar != null) {
            return;
        }
        
        mActionBar = new ActionBarImpl(this);
    }
    
    /**
     * Finds a fragment that was identified by the given id either when inflated
     * from XML or as the container ID when added in a transaction.  This only
     * returns fragments that are currently added to the activity's content.
     * @return The fragment if found or null otherwise.
     * @deprecated use {@link #getFragmentManager}.
     */
    @Deprecated
    public Fragment findFragmentById(int id) {
        return mFragments.findFragmentById(id);
    }
    
    /**
     * Finds a fragment that was identified by the given tag either when inflated
     * from XML or as supplied when added in a transaction.  This only
     * returns fragments that are currently added to the activity's content.
     * @return The fragment if found or null otherwise.
     * @deprecated use {@link #getFragmentManager}.
     */
    @Deprecated
    public Fragment findFragmentByTag(String tag) {
        return mFragments.findFragmentByTag(tag);
    }
    
    /**
     * Set the activity content from a layout resource.  The resource will be
     * inflated, adding all top-level views to the activity.
     * 
     * @param layoutResID Resource ID to be inflated.
     */
    public void setContentView(int layoutResID) {
        getWindow().setContentView(layoutResID);
        initActionBar();
    }

    /**
     * Set the activity content to an explicit view.  This view is placed
     * directly into the activity's view hierarchy.  It can itself be a complex
     * view hierarhcy.
     * 
     * @param view The desired content to display.
     */
    public void setContentView(View view) {
        getWindow().setContentView(view);
        initActionBar();
    }

    /**
     * Set the activity content to an explicit view.  This view is placed
     * directly into the activity's view hierarchy.  It can itself be a complex
     * view hierarhcy.
     * 
     * @param view The desired content to display.
     * @param params Layout parameters for the view.
     */
    public void setContentView(View view, ViewGroup.LayoutParams params) {
        getWindow().setContentView(view, params);
        initActionBar();
    }

    /**
     * Add an additional content view to the activity.  Added after any existing
     * ones in the activity -- existing views are NOT removed.
     * 
     * @param view The desired content to display.
     * @param params Layout parameters for the view.
     */
    public void addContentView(View view, ViewGroup.LayoutParams params) {
        getWindow().addContentView(view, params);
        initActionBar();
    }

    /**
     * Use with {@link #setDefaultKeyMode} to turn off default handling of
     * keys.
     * 
     * @see #setDefaultKeyMode
     */
    static public final int DEFAULT_KEYS_DISABLE = 0;
    /**
     * Use with {@link #setDefaultKeyMode} to launch the dialer during default
     * key handling.
     * 
     * @see #setDefaultKeyMode
     */
    static public final int DEFAULT_KEYS_DIALER = 1;
    /**
     * Use with {@link #setDefaultKeyMode} to execute a menu shortcut in
     * default key handling.
     * 
     * <p>That is, the user does not need to hold down the menu key to execute menu shortcuts.
     * 
     * @see #setDefaultKeyMode
     */
    static public final int DEFAULT_KEYS_SHORTCUT = 2;
    /**
     * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes
     * will start an application-defined search.  (If the application or activity does not
     * actually define a search, the the keys will be ignored.)
     * 
     * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details.
     * 
     * @see #setDefaultKeyMode
     */
    static public final int DEFAULT_KEYS_SEARCH_LOCAL = 3;

    /**
     * Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes
     * will start a global search (typically web search, but some platforms may define alternate
     * methods for global search)
     * 
     * <p>See {@link android.app.SearchManager android.app.SearchManager} for more details.
     * 
     * @see #setDefaultKeyMode
     */
    static public final int DEFAULT_KEYS_SEARCH_GLOBAL = 4;

    /**
     * Select the default key handling for this activity.  This controls what
     * will happen to key events that are not otherwise handled.  The default
     * mode ({@link #DEFAULT_KEYS_DISABLE}) will simply drop them on the
     * floor. Other modes allow you to launch the dialer
     * ({@link #DEFAULT_KEYS_DIALER}), execute a shortcut in your options
     * menu without requiring the menu key be held down
     * ({@link #DEFAULT_KEYS_SHORTCUT}), or launch a search ({@link #DEFAULT_KEYS_SEARCH_LOCAL} 
     * and {@link #DEFAULT_KEYS_SEARCH_GLOBAL}).
     * 
     * <p>Note that the mode selected here does not impact the default
     * handling of system keys, such as the "back" and "menu" keys, and your
     * activity and its views always get a first chance to receive and handle
     * all application keys.
     * 
     * @param mode The desired default key mode constant.
     * 
     * @see #DEFAULT_KEYS_DISABLE
     * @see #DEFAULT_KEYS_DIALER
     * @see #DEFAULT_KEYS_SHORTCUT
     * @see #DEFAULT_KEYS_SEARCH_LOCAL
     * @see #DEFAULT_KEYS_SEARCH_GLOBAL
     * @see #onKeyDown
     */
    public final void setDefaultKeyMode(int mode) {
        mDefaultKeyMode = mode;
        
        // Some modes use a SpannableStringBuilder to track & dispatch input events
        // This list must remain in sync with the switch in onKeyDown()
        switch (mode) {
        case DEFAULT_KEYS_DISABLE:
        case DEFAULT_KEYS_SHORTCUT:
            mDefaultKeySsb = null;      // not used in these modes
            break;
        case DEFAULT_KEYS_DIALER:
        case DEFAULT_KEYS_SEARCH_LOCAL:
        case DEFAULT_KEYS_SEARCH_GLOBAL:
            mDefaultKeySsb = new SpannableStringBuilder();
            Selection.setSelection(mDefaultKeySsb,0);
            break;
        default:
            throw new IllegalArgumentException();
        }
    }

    /**
     * Called when a key was pressed down and not handled by any of the views
     * inside of the activity. So, for example, key presses while the cursor 
     * is inside a TextView will not trigger the event (unless it is a navigation
     * to another object) because TextView handles its own key presses.
     * 
     * <p>If the focused view didn't want this event, this method is called.
     *
     * <p>The default implementation takes care of {@link KeyEvent#KEYCODE_BACK}
     * by calling {@link #onBackPressed()}, though the behavior varies based
     * on the application compatibility mode: for
     * {@link android.os.Build.VERSION_CODES#ECLAIR} or later applications,
     * it will set up the dispatch to call {@link #onKeyUp} where the action
     * will be performed; for earlier applications, it will perform the
     * action immediately in on-down, as those versions of the platform
     * behaved.
     * 
     * <p>Other additional default key handling may be performed
     * if configured with {@link #setDefaultKeyMode}.
     * 
     * @return Return <code>true</code> to prevent this event from being propagated
     * further, or <code>false</code> to indicate that you have not handled 
     * this event and it should continue to be propagated.
     * @see #onKeyUp
     * @see android.view.KeyEvent
     */
    public boolean onKeyDown(int keyCode, KeyEvent event)  {
        if (keyCode == KeyEvent.KEYCODE_BACK) {
            if (getApplicationInfo().targetSdkVersion
                    >= Build.VERSION_CODES.ECLAIR) {
                event.startTracking();
            } else {
                onBackPressed();
            }
            return true;
        }
        
        if (mDefaultKeyMode == DEFAULT_KEYS_DISABLE) {
            return false;
        } else if (mDefaultKeyMode == DEFAULT_KEYS_SHORTCUT) {
            if (getWindow().performPanelShortcut(Window.FEATURE_OPTIONS_PANEL, 
                    keyCode, event, Menu.FLAG_ALWAYS_PERFORM_CLOSE)) {
                return true;
            }
            return false;
        } else {
            // Common code for DEFAULT_KEYS_DIALER & DEFAULT_KEYS_SEARCH_*
            boolean clearSpannable = false;
            boolean handled;
            if ((event.getRepeatCount() != 0) || event.isSystem()) {
                clearSpannable = true;
                handled = false;
            } else {
                handled = TextKeyListener.getInstance().onKeyDown(
                        null, mDefaultKeySsb, keyCode, event);
                if (handled && mDefaultKeySsb.length() > 0) {
                    // something useable has been typed - dispatch it now.

                    final String str = mDefaultKeySsb.toString();
                    clearSpannable = true;
                    
                    switch (mDefaultKeyMode) {
                    case DEFAULT_KEYS_DIALER:
                        Intent intent = new Intent(Intent.ACTION_DIAL,  Uri.parse("tel:" + str));
                        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                        startActivity(intent);    
                        break;
                    case DEFAULT_KEYS_SEARCH_LOCAL:
                        startSearch(str, false, null, false);
                        break;
                    case DEFAULT_KEYS_SEARCH_GLOBAL:
                        startSearch(str, false, null, true);
                        break;
                    }
                }
            }
            if (clearSpannable) {
                mDefaultKeySsb.clear();
                mDefaultKeySsb.clearSpans();
                Selection.setSelection(mDefaultKeySsb,0);
            }
            return handled;
        }
    }

    /**
     * Default implementation of {@link KeyEvent.Callback#onKeyLongPress(int, KeyEvent)
     * KeyEvent.Callback.onKeyLongPress()}: always returns false (doesn't handle
     * the event).
     */
    public boolean onKeyLongPress(int keyCode, KeyEvent event) {
        return false;
    }

    /**
     * Called when a key was released and not handled by any of the views
     * inside of the activity. So, for example, key presses while the cursor 
     * is inside a TextView will not trigger the event (unless it is a navigation
     * to another object) because TextView handles its own key presses.
     * 
     * <p>The default implementation handles KEYCODE_BACK to stop the activity
     * and go back.
     * 
     * @return Return <code>true</code> to prevent this event from being propagated
     * further, or <code>false</code> to indicate that you have not handled 
     * this event and it should continue to be propagated. 
     * @see #onKeyDown
     * @see KeyEvent
     */
    public boolean onKeyUp(int keyCode, KeyEvent event) {
        if (getApplicationInfo().targetSdkVersion
                >= Build.VERSION_CODES.ECLAIR) {
            if (keyCode == KeyEvent.KEYCODE_BACK && event.isTracking()
                    && !event.isCanceled()) {
                onBackPressed();
                return true;
            }
        }
        return false;
    }

    /**
     * Default implementation of {@link KeyEvent.Callback#onKeyMultiple(int, int, KeyEvent)
     * KeyEvent.Callback.onKeyMultiple()}: always returns false (doesn't handle
     * the event).
     */
    public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
        return false;
    }
    
    /**
     * Called when the activity has detected the user's press of the back
     * key.  The default implementation simply finishes the current activity,
     * but you can override this to do whatever you want.
     */
    public void onBackPressed() {
        if (!mFragments.popBackStackImmediate()) {
            finish();
        }
    }
    
    /**
     * Called when a touch screen event was not handled by any of the views
     * under it.  This is most useful to process touch events that happen
     * outside of your window bounds, where there is no view to receive it.
     * 
     * @param event The touch screen event being processed.
     * 
     * @return Return true if you have consumed the event, false if you haven't.
     * The default implementation always returns false.
     */
    public boolean onTouchEvent(MotionEvent event) {
        return false;
    }
    
    /**
     * Called when the trackball was moved and not handled by any of the
     * views inside of the activity.  So, for example, if the trackball moves
     * while focus is on a button, you will receive a call here because
     * buttons do not normally do anything with trackball events.  The call
     * here happens <em>before</em> trackball movements are converted to
     * DPAD key events, which then get sent back to the view hierarchy, and
     * will be processed at the point for things like focus navigation.
     * 
     * @param event The trackball event being processed.
     * 
     * @return Return true if you have consumed the event, false if you haven't.
     * The default implementation always returns false.
     */
    public boolean onTrackballEvent(MotionEvent event) {
        return false;
    }
    
    /**
     * Called whenever a key, touch, or trackball event is dispatched to the
     * activity.  Implement this method if you wish to know that the user has
     * interacted with the device in some way while your activity is running.
     * This callback and {@link #onUserLeaveHint} are intended to help
     * activities manage status bar notifications intelligently; specifically,
     * for helping activities determine the proper time to cancel a notfication.
     * 
     * <p>All calls to your activity's {@link #onUserLeaveHint} callback will
     * be accompanied by calls to {@link #onUserInteraction}.  This
     * ensures that your activity will be told of relevant user activity such
     * as pulling down the notification pane and touching an item there.
     * 
     * <p>Note that this callback will be invoked for the touch down action
     * that begins a touch gesture, but may not be invoked for the touch-moved
     * and touch-up actions that follow.
     * 
     * @see #onUserLeaveHint()
     */
    public void onUserInteraction() {
    }
    
    public void onWindowAttributesChanged(WindowManager.LayoutParams params) {
        // Update window manager if: we have a view, that view is
        // attached to its parent (which will be a RootView), and
        // this activity is not embedded.
        if (mParent == null) {
            View decor = mDecor;
            if (decor != null && decor.getParent() != null) {
                getWindowManager().updateViewLayout(decor, params);
            }
        }
    }

    public void onContentChanged() {
    }

    /**
     * Called when the current {@link Window} of the activity gains or loses
     * focus.  This is the best indicator of whether this activity is visible
     * to the user.  The default implementation clears the key tracking
     * state, so should always be called.
     * 
     * <p>Note that this provides information about global focus state, which
     * is managed independently of activity lifecycles.  As such, while focus
     * changes will generally have some relation to lifecycle changes (an
     * activity that is stopped will not generally get window focus), you
     * should not rely on any particular order between the callbacks here and
     * those in the other lifecycle methods such as {@link #onResume}.
     * 
     * <p>As a general rule, however, a resumed activity will have window
     * focus...  unless it has displayed other dialogs or popups that take
     * input focus, in which case the activity itself will not have focus
     * when the other windows have it.  Likewise, the system may display
     * system-level windows (such as the status bar notification panel or
     * a system alert) which will temporarily take window input focus without
     * pausing the foreground activity.
     *
     * @param hasFocus Whether the window of this activity has focus.
     * 
     * @see #hasWindowFocus()
     * @see #onResume
     * @see View#onWindowFocusChanged(boolean)
     */
    public void onWindowFocusChanged(boolean hasFocus) {
    }
    
    /**
     * Called when the main window associated with the activity has been
     * attached to the window manager.
     * See {@link View#onAttachedToWindow() View.onAttachedToWindow()}
     * for more information.
     * @see View#onAttachedToWindow
     */
    public void onAttachedToWindow() {
    }
    
    /**
     * Called when the main window associated with the activity has been
     * detached from the window manager.
     * See {@link View#onDetachedFromWindow() View.onDetachedFromWindow()}
     * for more information.
     * @see View#onDetachedFromWindow
     */
    public void onDetachedFromWindow() {
    }
    
    /**
     * Returns true if this activity's <em>main</em> window currently has window focus.
     * Note that this is not the same as the view itself having focus.
     * 
     * @return True if this activity's main window currently has window focus.
     * 
     * @see #onWindowAttributesChanged(android.view.WindowManager.LayoutParams)
     */
    public boolean hasWindowFocus() {
        Window w = getWindow();
        if (w != null) {
            View d = w.getDecorView();
            if (d != null) {
                return d.hasWindowFocus();
            }
        }
        return false;
    }
    
    /**
     * Called to process key events.  You can override this to intercept all 
     * key events before they are dispatched to the window.  Be sure to call 
     * this implementation for key events that should be handled normally.
     * 
     * @param event The key event.
     * 
     * @return boolean Return true if this event was consumed.
     */
    public boolean dispatchKeyEvent(KeyEvent event) {
        onUserInteraction();
        Window win = getWindow();
        if (win.superDispatchKeyEvent(event)) {
            return true;
        }
        View decor = mDecor;
        if (decor == null) decor = win.getDecorView();
        return event.dispatch(this, decor != null
                ? decor.getKeyDispatcherState() : null, this);
    }

    /**
     * Called to process touch screen events.  You can override this to
     * intercept all touch screen events before they are dispatched to the
     * window.  Be sure to call this implementation for touch screen events
     * that should be handled normally.
     * 
     * @param ev The touch screen event.
     * 
     * @return boolean Return true if this event was consumed.
     */
    public boolean dispatchTouchEvent(MotionEvent ev) {
        if (ev.getAction() == MotionEvent.ACTION_DOWN) {
            onUserInteraction();
        }
        if (getWindow().superDispatchTouchEvent(ev)) {
            return true;
        }
        return onTouchEvent(ev);
    }
    
    /**
     * Called to process trackball events.  You can override this to
     * intercept all trackball events before they are dispatched to the
     * window.  Be sure to call this implementation for trackball events
     * that should be handled normally.
     * 
     * @param ev The trackball event.
     * 
     * @return boolean Return true if this event was consumed.
     */
    public boolean dispatchTrackballEvent(MotionEvent ev) {
        onUserInteraction();
        if (getWindow().superDispatchTrackballEvent(ev)) {
            return true;
        }
        return onTrackballEvent(ev);
    }

    public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) {
        event.setClassName(getClass().getName());
        event.setPackageName(getPackageName());

        LayoutParams params = getWindow().getAttributes();
        boolean isFullScreen = (params.width == LayoutParams.MATCH_PARENT) &&
            (params.height == LayoutParams.MATCH_PARENT);
        event.setFullScreen(isFullScreen);

        CharSequence title = getTitle();
        if (!TextUtils.isEmpty(title)) {
           event.getText().add(title);
        }

        return true;
    }

    /**
     * Default implementation of
     * {@link android.view.Window.Callback#onCreatePanelView}
     * for activities. This
     * simply returns null so that all panel sub-windows will have the default
     * menu behavior.
     */
    public View onCreatePanelView(int featureId) {
        return null;
    }

    /**
     * Default implementation of
     * {@link android.view.Window.Callback#onCreatePanelMenu}
     * for activities.  This calls through to the new
     * {@link #onCreateOptionsMenu} method for the
     * {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel,
     * so that subclasses of Activity don't need to deal with feature codes.
     */
    public boolean onCreatePanelMenu(int featureId, Menu menu) {
        if (featureId == Window.FEATURE_OPTIONS_PANEL) {
            boolean show = onCreateOptionsMenu(menu);
            show |= mFragments.dispatchCreateOptionsMenu(menu, getMenuInflater());
            return show;
        }
        return false;
    }

    /**
     * Default implementation of
     * {@link android.view.Window.Callback#onPreparePanel}
     * for activities.  This
     * calls through to the new {@link #onPrepareOptionsMenu} method for the
     * {@link android.view.Window#FEATURE_OPTIONS_PANEL}
     * panel, so that subclasses of
     * Activity don't need to deal with feature codes.
     */
    public boolean onPreparePanel(int featureId, View view, Menu menu) {
        if (featureId == Window.FEATURE_OPTIONS_PANEL && menu != null) {
            boolean goforit = onPrepareOptionsMenu(menu);
            goforit |= mFragments.dispatchPrepareOptionsMenu(menu);
            return goforit && menu.hasVisibleItems();
        }
        return true;
    }

    /**
     * {@inheritDoc}
     * 
     * @return The default implementation returns true.
     */
    public boolean onMenuOpened(int featureId, Menu menu) {
        if (featureId == Window.FEATURE_ACTION_BAR) {
            if (mActionBar != null) {
                mActionBar.dispatchMenuVisibilityChanged(true);
            } else {
                Log.e(TAG, "Tried to open action bar menu with no action bar");
            }
        }
        return true;
    }

    /**
     * Default implementation of
     * {@link android.view.Window.Callback#onMenuItemSelected}
     * for activities.  This calls through to the new
     * {@link #onOptionsItemSelected} method for the
     * {@link android.view.Window#FEATURE_OPTIONS_PANEL}
     * panel, so that subclasses of
     * Activity don't need to deal with feature codes.
     */
    public boolean onMenuItemSelected(int featureId, MenuItem item) {
        switch (featureId) {
            case Window.FEATURE_OPTIONS_PANEL:
                // Put event logging here so it gets called even if subclass
                // doesn't call through to superclass's implmeentation of each
                // of these methods below
                EventLog.writeEvent(50000, 0, item.getTitleCondensed());
                if (onOptionsItemSelected(item)) {
                    return true;
                }
                return mFragments.dispatchOptionsItemSelected(item);
                
            case Window.FEATURE_CONTEXT_MENU:
                EventLog.writeEvent(50000, 1, item.getTitleCondensed());
                if (onContextItemSelected(item)) {
                    return true;
                }
                return mFragments.dispatchContextItemSelected(item);

            default:
                return false;
        }
    }
    
    /**
     * Default implementation of
     * {@link android.view.Window.Callback#onPanelClosed(int, Menu)} for
     * activities. This calls through to {@link #onOptionsMenuClosed(Menu)}
     * method for the {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel,
     * so that subclasses of Activity don't need to deal with feature codes.
     * For context menus ({@link Window#FEATURE_CONTEXT_MENU}), the
     * {@link #onContextMenuClosed(Menu)} will be called.
     */
    public void onPanelClosed(int featureId, Menu menu) {
        switch (featureId) {
            case Window.FEATURE_OPTIONS_PANEL:
                mFragments.dispatchOptionsMenuClosed(menu);
                onOptionsMenuClosed(menu);
                break;
                
            case Window.FEATURE_CONTEXT_MENU:
                onContextMenuClosed(menu);
                break;

            case Window.FEATURE_ACTION_BAR:
                mActionBar.dispatchMenuVisibilityChanged(false);
                break;
        }
    }

    /**
     * Declare that the options menu has changed, so should be recreated.
     * The {@link #onCreateOptionsMenu(Menu)} method will be called the next
     * time it needs to be displayed.
     */
    public void invalidateOptionsMenu() {
        mWindow.invalidatePanelMenu(Window.FEATURE_OPTIONS_PANEL);
    }
    
    /**
     * Initialize the contents of the Activity's standard options menu.  You
     * should place your menu items in to <var>menu</var>.
     * 
     * <p>This is only called once, the first time the options menu is
     * displayed.  To update the menu every time it is displayed, see
     * {@link #onPrepareOptionsMenu}.
     * 
     * <p>The default implementation populates the menu with standard system
     * menu items.  These are placed in the {@link Menu#CATEGORY_SYSTEM} group so that 
     * they will be correctly ordered with application-defined menu items. 
     * Deriving classes should always call through to the base implementation. 
     * 
     * <p>You can safely hold on to <var>menu</var> (and any items created
     * from it), making modifications to it as desired, until the next
     * time onCreateOptionsMenu() is called.
     * 
     * <p>When you add items to the menu, you can implement the Activity's
     * {@link #onOptionsItemSelected} method to handle them there.
     * 
     * @param menu The options menu in which you place your items.
     * 
     * @return You must return true for the menu to be displayed;
     *         if you return false it will not be shown.
     * 
     * @see #onPrepareOptionsMenu
     * @see #onOptionsItemSelected
     */
    public boolean onCreateOptionsMenu(Menu menu) {
        if (mParent != null) {
            return mParent.onCreateOptionsMenu(menu);
        }
        return true;
    }

    /**
     * Prepare the Screen's standard options menu to be displayed.  This is
     * called right before the menu is shown, every time it is shown.  You can
     * use this method to efficiently enable/disable items or otherwise
     * dynamically modify the contents.
     * 
     * <p>The default implementation updates the system menu items based on the
     * activity's state.  Deriving classes should always call through to the
     * base class implementation.
     * 
     * @param menu The options menu as last shown or first initialized by
     *             onCreateOptionsMenu().
     * 
     * @return You must return true for the menu to be displayed;
     *         if you return false it will not be shown.
     * 
     * @see #onCreateOptionsMenu
     */
    public boolean onPrepareOptionsMenu(Menu menu) {
        if (mParent != null) {
            return mParent.onPrepareOptionsMenu(menu);
        }
        return true;
    }

    /**
     * This hook is called whenever an item in your options menu is selected.
     * The default implementation simply returns false to have the normal
     * processing happen (calling the item's Runnable or sending a message to
     * its Handler as appropriate).  You can use this method for any items
     * for which you would like to do processing without those other
     * facilities.
     * 
     * <p>Derived classes should call through to the base class for it to
     * perform the default menu handling.
     * 
     * @param item The menu item that was selected.
     * 
     * @return boolean Return false to allow normal menu processing to
     *         proceed, true to consume it here.
     * 
     * @see #onCreateOptionsMenu
     */
    public boolean onOptionsItemSelected(MenuItem item) {
        if (mParent != null) {
            return mParent.onOptionsItemSelected(item);
        }
        return false;
    }

    /**
     * This hook is called whenever the options menu is being closed (either by the user canceling
     * the menu with the back/menu button, or when an item is selected).
     *  
     * @param menu The options menu as last shown or first initialized by
     *             onCreateOptionsMenu().
     */
    public void onOptionsMenuClosed(Menu menu) {
        if (mParent != null) {
            mParent.onOptionsMenuClosed(menu);
        }
    }
    
    /**
     * Programmatically opens the options menu. If the options menu is already
     * open, this method does nothing.
     */
    public void openOptionsMenu() {
        mWindow.openPanel(Window.FEATURE_OPTIONS_PANEL, null);
    }
    
    /**
     * Progammatically closes the options menu. If the options menu is already
     * closed, this method does nothing.
     */
    public void closeOptionsMenu() {
        mWindow.closePanel(Window.FEATURE_OPTIONS_PANEL);
    }

    /**
     * Called when a context menu for the {@code view} is about to be shown.
     * Unlike {@link #onCreateOptionsMenu(Menu)}, this will be called every
     * time the context menu is about to be shown and should be populated for
     * the view (or item inside the view for {@link AdapterView} subclasses,
     * this can be found in the {@code menuInfo})).
     * <p>
     * Use {@link #onContextItemSelected(android.view.MenuItem)} to know when an
     * item has been selected.
     * <p>
     * It is not safe to hold onto the context menu after this method returns.
     * {@inheritDoc}
     */
    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
    }

    /**
     * Registers a context menu to be shown for the given view (multiple views
     * can show the context menu). This method will set the
     * {@link OnCreateContextMenuListener} on the view to this activity, so
     * {@link #onCreateContextMenu(ContextMenu, View, ContextMenuInfo)} will be
     * called when it is time to show the context menu.
     * 
     * @see #unregisterForContextMenu(View)
     * @param view The view that should show a context menu.
     */
    public void registerForContextMenu(View view) {
        view.setOnCreateContextMenuListener(this);
    }
    
    /**
     * Prevents a context menu to be shown for the given view. This method will remove the
     * {@link OnCreateContextMenuListener} on the view.
     * 
     * @see #registerForContextMenu(View)
     * @param view The view that should stop showing a context menu.
     */
    public void unregisterForContextMenu(View view) {
        view.setOnCreateContextMenuListener(null);
    }
    
    /**
     * Programmatically opens the context menu for a particular {@code view}.
     * The {@code view} should have been added via
     * {@link #registerForContextMenu(View)}.
     * 
     * @param view The view to show the context menu for.
     */
    public void openContextMenu(View view) {
        view.showContextMenu();
    }
    
    /**
     * Programmatically closes the most recently opened context menu, if showing.
     */
    public void closeContextMenu() {
        mWindow.closePanel(Window.FEATURE_CONTEXT_MENU);
    }
    
    /**
     * This hook is called whenever an item in a context menu is selected. The
     * default implementation simply returns false to have the normal processing
     * happen (calling the item's Runnable or sending a message to its Handler
     * as appropriate). You can use this method for any items for which you
     * would like to do processing without those other facilities.
     * <p>
     * Use {@link MenuItem#getMenuInfo()} to get extra information set by the
     * View that added this menu item.
     * <p>
     * Derived classes should call through to the base class for it to perform
     * the default menu handling.
     * 
     * @param item The context menu item that was selected.
     * @return boolean Return false to allow normal context menu processing to
     *         proceed, true to consume it here.
     */
    public boolean onContextItemSelected(MenuItem item) {
        if (mParent != null) {
            return mParent.onContextItemSelected(item);
        }
        return false;
    }

    /**
     * This hook is called whenever the context menu is being closed (either by
     * the user canceling the menu with the back/menu button, or when an item is
     * selected).
     * 
     * @param menu The context menu that is being closed.
     */
    public void onContextMenuClosed(Menu menu) {
        if (mParent != null) {
            mParent.onContextMenuClosed(menu);
        }
    }

    /**
     * @deprecated Old no-arguments version of {@link #onCreateDialog(int, Bundle)}.
     */
    @Deprecated
    protected Dialog onCreateDialog(int id) {
        return null;
    }

    /**
     * Callback for creating dialogs that are managed (saved and restored) for you
     * by the activity.  The default implementation calls through to
     * {@link #onCreateDialog(int)} for compatibility.
     *
     * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB}
     * or later, consider instead using a {@link DialogFragment} instead.</em>
     *
     * <p>If you use {@link #showDialog(int)}, the activity will call through to
     * this method the first time, and hang onto it thereafter.  Any dialog
     * that is created by this method will automatically be saved and restored
     * for you, including whether it is showing.
     *
     * <p>If you would like the activity to manage saving and restoring dialogs
     * for you, you should override this method and handle any ids that are
     * passed to {@link #showDialog}.
     *
     * <p>If you would like an opportunity to prepare your dialog before it is shown,
     * override {@link #onPrepareDialog(int, Dialog, Bundle)}.
     *
     * @param id The id of the dialog.
     * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}.
     * @return The dialog.  If you return null, the dialog will not be created.
     *
     * @see #onPrepareDialog(int, Dialog, Bundle)
     * @see #showDialog(int, Bundle)
     * @see #dismissDialog(int)
     * @see #removeDialog(int)
     */
    protected Dialog onCreateDialog(int id, Bundle args) {
        return onCreateDialog(id);
    }

    /**
     * @deprecated Old no-arguments version of
     * {@link #onPrepareDialog(int, Dialog, Bundle)}.
     */
    @Deprecated
    protected void onPrepareDialog(int id, Dialog dialog) {
        dialog.setOwnerActivity(this);
    }

    /**
     * Provides an opportunity to prepare a managed dialog before it is being
     * shown.  The default implementation calls through to
     * {@link #onPrepareDialog(int, Dialog)} for compatibility.
     * 
     * <p>
     * Override this if you need to update a managed dialog based on the state
     * of the application each time it is shown. For example, a time picker
     * dialog might want to be updated with the current time. You should call
     * through to the superclass's implementation. The default implementation
     * will set this Activity as the owner activity on the Dialog.
     * 
     * @param id The id of the managed dialog.
     * @param dialog The dialog.
     * @param args The dialog arguments provided to {@link #showDialog(int, Bundle)}.
     * @see #onCreateDialog(int, Bundle)
     * @see #showDialog(int)
     * @see #dismissDialog(int)
     * @see #removeDialog(int)
     */
    protected void onPrepareDialog(int id, Dialog dialog, Bundle args) {
        onPrepareDialog(id, dialog);
    }

    /**
     * Simple version of {@link #showDialog(int, Bundle)} that does not
     * take any arguments.  Simply calls {@link #showDialog(int, Bundle)}
     * with null arguments.
     */
    public final void showDialog(int id) {
        showDialog(id, null);
    }

    /**
     * Show a dialog managed by this activity.  A call to {@link #onCreateDialog(int, Bundle)}
     * will be made with the same id the first time this is called for a given
     * id.  From thereafter, the dialog will be automatically saved and restored.
     *
     * <em>If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB}
     * or later, consider instead using a {@link DialogFragment} instead.</em>
     *
     * <p>Each time a dialog is shown, {@link #onPrepareDialog(int, Dialog, Bundle)} will
     * be made to provide an opportunity to do any timely preparation.
     *
     * @param id The id of the managed dialog.
     * @param args Arguments to pass through to the dialog.  These will be saved
     * and restored for you.  Note that if the dialog is already created,
     * {@link #onCreateDialog(int, Bundle)} will not be called with the new
     * arguments but {@link #onPrepareDialog(int, Dialog, Bundle)} will be.
     * If you need to rebuild the dialog, call {@link #removeDialog(int)} first.
     * @return Returns true if the Dialog was created; false is returned if
     * it is not created because {@link #onCreateDialog(int, Bundle)} returns false.
     * 
     * @see Dialog
     * @see #onCreateDialog(int, Bundle)
     * @see #onPrepareDialog(int, Dialog, Bundle)
     * @see #dismissDialog(int)
     * @see #removeDialog(int)
     */
    public final boolean showDialog(int id, Bundle args) {
        if (mManagedDialogs == null) {
            mManagedDialogs = new SparseArray<ManagedDialog>();
        }
        ManagedDialog md = mManagedDialogs.get(id);
        if (md == null) {
            md = new ManagedDialog();
            md.mDialog = createDialog(id, null, args);
            if (md.mDialog == null) {
                return false;
            }
            mManagedDialogs.put(id, md);
        }
        
        md.mArgs = args;
        onPrepareDialog(id, md.mDialog, args);
        md.mDialog.show();
        return true;
    }

    /**
     * Dismiss a dialog that was previously shown via {@link #showDialog(int)}.
     *
     * @param id The id of the managed dialog.
     *
     * @throws IllegalArgumentException if the id was not previously shown via
     *   {@link #showDialog(int)}.
     *
     * @see #onCreateDialog(int, Bundle)
     * @see #onPrepareDialog(int, Dialog, Bundle)
     * @see #showDialog(int)
     * @see #removeDialog(int)
     */
    public final void dismissDialog(int id) {
        if (mManagedDialogs == null) {
            throw missingDialog(id);
        }
        
        final ManagedDialog md = mManagedDialogs.get(id);
        if (md == null) {
            throw missingDialog(id);
        }
        md.mDialog.dismiss();
    }

    /**
     * Creates an exception to throw if a user passed in a dialog id that is
     * unexpected.
     */
    private IllegalArgumentException missingDialog(int id) {
        return new IllegalArgumentException("no dialog with id " + id + " was ever "
                + "shown via Activity#showDialog");
    }

    /**
     * Removes any internal references to a dialog managed by this Activity.
     * If the dialog is showing, it will dismiss it as part of the clean up.
     *
     * <p>This can be useful if you know that you will never show a dialog again and
     * want to avoid the overhead of saving and restoring it in the future.
     *
     * <p>As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, this function
     * will not throw an exception if you try to remove an ID that does not
     * currently have an associated dialog.</p>
     * 
     * @param id The id of the managed dialog.
     *
     * @see #onCreateDialog(int, Bundle)
     * @see #onPrepareDialog(int, Dialog, Bundle)
     * @see #showDialog(int)
     * @see #dismissDialog(int)
     */
    public final void removeDialog(int id) {
        if (mManagedDialogs != null) {
            final ManagedDialog md = mManagedDialogs.get(id);
            if (md != null) {
                md.mDialog.dismiss();
                mManagedDialogs.remove(id);
            }
        }
    }

    /**
     * This hook is called when the user signals the desire to start a search.
     * 
     * <p>You can use this function as a simple way to launch the search UI, in response to a
     * menu item, search button, or other widgets within your activity. Unless overidden, 
     * calling this function is the same as calling
     * {@link #startSearch startSearch(null, false, null, false)}, which launches
     * search for the current activity as specified in its manifest, see {@link SearchManager}.
     * 
     * <p>You can override this function to force global search, e.g. in response to a dedicated
     * search key, or to block search entirely (by simply returning false).
     * 
     * @return Returns {@code true} if search launched, and {@code false} if activity blocks it.
     *         The default implementation always returns {@code true}.
     * 
     * @see android.app.SearchManager
     */
    public boolean onSearchRequested() {
        startSearch(null, false, null, false); 
        return true;
    }
    
    /**
     * This hook is called to launch the search UI.
     * 
     * <p>It is typically called from onSearchRequested(), either directly from 
     * Activity.onSearchRequested() or from an overridden version in any given 
     * Activity.  If your goal is simply to activate search, it is preferred to call
     * onSearchRequested(), which may have been overriden elsewhere in your Activity.  If your goal
     * is to inject specific data such as context data, it is preferred to <i>override</i>
     * onSearchRequested(), so that any callers to it will benefit from the override.
     * 
     * @param initialQuery Any non-null non-empty string will be inserted as 
     * pre-entered text in the search query box.
     * @param selectInitialQuery If true, the intial query will be preselected, which means that
     * any further typing will replace it.  This is useful for cases where an entire pre-formed
     * query is being inserted.  If false, the selection point will be placed at the end of the
     * inserted query.  This is useful when the inserted query is text that the user entered,
     * and the user would expect to be able to keep typing.  <i>This parameter is only meaningful
     * if initialQuery is a non-empty string.</i>
     * @param appSearchData An application can insert application-specific 
     * context here, in order to improve quality or specificity of its own 
     * searches.  This data will be returned with SEARCH intent(s).  Null if
     * no extra data is required.
     * @param globalSearch If false, this will only launch the search that has been specifically
     * defined by the application (which is usually defined as a local search).  If no default 
     * search is defined in the current application or activity, global search will be launched.
     * If true, this will always launch a platform-global (e.g. web-based) search instead.
     * 
     * @see android.app.SearchManager
     * @see #onSearchRequested
     */
    public void startSearch(String initialQuery, boolean selectInitialQuery, 
            Bundle appSearchData, boolean globalSearch) {
        ensureSearchManager();
        mSearchManager.startSearch(initialQuery, selectInitialQuery, getComponentName(),
                        appSearchData, globalSearch); 
    }

    /**
     * Similar to {@link #startSearch}, but actually fires off the search query after invoking
     * the search dialog.  Made available for testing purposes.
     *
     * @param query The query to trigger.  If empty, the request will be ignored.
     * @param appSearchData An application can insert application-specific
     * context here, in order to improve quality or specificity of its own
     * searches.  This data will be returned with SEARCH intent(s).  Null if
     * no extra data is required.
     */
    public void triggerSearch(String query, Bundle appSearchData) {
        ensureSearchManager();
        mSearchManager.triggerSearch(query, getComponentName(), appSearchData);
    }

    /**
     * Request that key events come to this activity. Use this if your
     * activity has no views with focus, but the activity still wants
     * a chance to process key events.
     * 
     * @see android.view.Window#takeKeyEvents
     */
    public void takeKeyEvents(boolean get) {
        getWindow().takeKeyEvents(get);
    }

    /**
     * Enable extended window features.  This is a convenience for calling
     * {@link android.view.Window#requestFeature getWindow().requestFeature()}.
     * 
     * @param featureId The desired feature as defined in
     *                  {@link android.view.Window}.
     * @return Returns true if the requested feature is supported and now
     *         enabled.
     * 
     * @see android.view.Window#requestFeature
     */
    public final boolean requestWindowFeature(int featureId) {
        return getWindow().requestFeature(featureId);
    }

    /**
     * Convenience for calling
     * {@link android.view.Window#setFeatureDrawableResource}.
     */
    public final void setFeatureDrawableResource(int featureId, int resId) {
        getWindow().setFeatureDrawableResource(featureId, resId);
    }

    /**
     * Convenience for calling
     * {@link android.view.Window#setFeatureDrawableUri}.
     */
    public final void setFeatureDrawableUri(int featureId, Uri uri) {
        getWindow().setFeatureDrawableUri(featureId, uri);
    }

    /**
     * Convenience for calling
     * {@link android.view.Window#setFeatureDrawable(int, Drawable)}.
     */
    public final void setFeatureDrawable(int featureId, Drawable drawable) {
        getWindow().setFeatureDrawable(featureId, drawable);
    }

    /**
     * Convenience for calling
     * {@link android.view.Window#setFeatureDrawableAlpha}.
     */
    public final void setFeatureDrawableAlpha(int featureId, int alpha) {
        getWindow().setFeatureDrawableAlpha(featureId, alpha);
    }

    /**
     * Convenience for calling
     * {@link android.view.Window#getLayoutInflater}.
     */
    public LayoutInflater getLayoutInflater() {
        return getWindow().getLayoutInflater();
    }

    /**
     * Returns a {@link MenuInflater} with this context.
     */
    public MenuInflater getMenuInflater() {
        return new MenuInflater(this);
    }

    @Override
    protected void onApplyThemeResource(Resources.Theme theme, int resid,
            boolean first) {
        if (mParent == null) {
            super.onApplyThemeResource(theme, resid, first);
        } else {
            try {
                theme.setTo(mParent.getTheme());
            } catch (Exception e) {
                // Empty
            }
            theme.applyStyle(resid, false);
        }
    }

    /**
     * Launch an activity for which you would like a result when it finished.
     * When this activity exits, your
     * onActivityResult() method will be called with the given requestCode. 
     * Using a negative requestCode is the same as calling 
     * {@link #startActivity} (the activity is not launched as a sub-activity).
     * 
     * <p>Note that this method should only be used with Intent protocols
     * that are defined to return a result.  In other protocols (such as
     * {@link Intent#ACTION_MAIN} or {@link Intent#ACTION_VIEW}), you may
     * not get the result when you expect.  For example, if the activity you
     * are launching uses the singleTask launch mode, it will not run in your
     * task and thus you will immediately receive a cancel result.
     * 
     * <p>As a special case, if you call startActivityForResult() with a requestCode 
     * >= 0 during the initial onCreate(Bundle savedInstanceState)/onResume() of your
     * activity, then your window will not be displayed until a result is 
     * returned back from the started activity.  This is to avoid visible 
     * flickering when redirecting to another activity. 
     * 
     * <p>This method throws {@link android.content.ActivityNotFoundException}
     * if there was no Activity found to run the given Intent.
     * 
     * @param intent The intent to start.
     * @param requestCode If >= 0, this code will be returned in
     *                    onActivityResult() when the activity exits.
     * 
     * @throws android.content.ActivityNotFoundException
     * 
     * @see #startActivity 
     */
    public void startActivityForResult(Intent intent, int requestCode) {
        if (mParent == null) {
            Instrumentation.ActivityResult ar =
                mInstrumentation.execStartActivity(
                    this, mMainThread.getApplicationThread(), mToken, this,
                    intent, requestCode);
            if (ar != null) {
                mMainThread.sendActivityResult(
                    mToken, mEmbeddedID, requestCode, ar.getResultCode(),
                    ar.getResultData());
            }
            if (requestCode >= 0) {
                // If this start is requesting a result, we can avoid making
                // the activity visible until the result is received.  Setting
                // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the
                // activity hidden during this time, to avoid flickering.
                // This can only be done when a result is requested because
                // that guarantees we will get information back when the
                // activity is finished, no matter what happens to it.
                mStartedActivity = true;
            }
        } else {
            mParent.startActivityFromChild(this, intent, requestCode);
        }
    }

    /**
     * Like {@link #startActivityForResult(Intent, int)}, but allowing you
     * to use a IntentSender to describe the activity to be started.  If
     * the IntentSender is for an activity, that activity will be started
     * as if you had called the regular {@link #startActivityForResult(Intent, int)}
     * here; otherwise, its associated action will be executed (such as
     * sending a broadcast) as if you had called
     * {@link IntentSender#sendIntent IntentSender.sendIntent} on it.
     * 
     * @param intent The IntentSender to launch.
     * @param requestCode If >= 0, this code will be returned in
     *                    onActivityResult() when the activity exits.
     * @param fillInIntent If non-null, this will be provided as the
     * intent parameter to {@link IntentSender#sendIntent}.
     * @param flagsMask Intent flags in the original IntentSender that you
     * would like to change.
     * @param flagsValues Desired values for any bits set in
     * <var>flagsMask</var>
     * @param extraFlags Always set to 0.
     */
    public void startIntentSenderForResult(IntentSender intent, int requestCode,
            Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags)
            throws IntentSender.SendIntentException {
        if (mParent == null) {
            startIntentSenderForResultInner(intent, requestCode, fillInIntent,
                    flagsMask, flagsValues, this);
        } else {
            mParent.startIntentSenderFromChild(this, intent, requestCode,
                    fillInIntent, flagsMask, flagsValues, extraFlags);
        }
    }

    private void startIntentSenderForResultInner(IntentSender intent, int requestCode,
            Intent fillInIntent, int flagsMask, int flagsValues, Activity activity)
            throws IntentSender.SendIntentException {
        try {
            String resolvedType = null;
            if (fillInIntent != null) {
                resolvedType = fillInIntent.resolveTypeIfNeeded(getContentResolver());
            }
            int result = ActivityManagerNative.getDefault()
                .startActivityIntentSender(mMainThread.getApplicationThread(), intent,
                        fillInIntent, resolvedType, mToken, activity.mEmbeddedID,
                        requestCode, flagsMask, flagsValues);
            if (result == IActivityManager.START_CANCELED) {
                throw new IntentSender.SendIntentException();
            }
            Instrumentation.checkStartActivityResult(result, null);
        } catch (RemoteException e) {
        }
        if (requestCode >= 0) {
            // If this start is requesting a result, we can avoid making
            // the activity visible until the result is received.  Setting
            // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the
            // activity hidden during this time, to avoid flickering.
            // This can only be done when a result is requested because
            // that guarantees we will get information back when the
            // activity is finished, no matter what happens to it.
            mStartedActivity = true;
        }
    }

    /**
     * Launch a new activity.  You will not receive any information about when
     * the activity exits.  This implementation overrides the base version,
     * providing information about
     * the activity performing the launch.  Because of this additional
     * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not
     * required; if not specified, the new activity will be added to the
     * task of the caller.
     * 
     * <p>This method throws {@link android.content.ActivityNotFoundException}
     * if there was no Activity found to run the given Intent.
     * 
     * @param intent The intent to start. 
     * 
     * @throws android.content.ActivityNotFoundException
     * 
     * @see #startActivityForResult 
     */
    @Override
    public void startActivity(Intent intent) {
        startActivityForResult(intent, -1);
    }

    /**
     * Launch a new activity.  You will not receive any information about when
     * the activity exits.  This implementation overrides the base version,
     * providing information about
     * the activity performing the launch.  Because of this additional
     * information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not
     * required; if not specified, the new activity will be added to the
     * task of the caller.
     *
     * <p>This method throws {@link android.content.ActivityNotFoundException}
     * if there was no Activity found to run the given Intent.
     *
     * @param intents The intents to start.
     *
     * @throws android.content.ActivityNotFoundException
     *
     * @see #startActivityForResult
     */
    @Override
    public void startActivities(Intent[] intents) {
        mInstrumentation.execStartActivities(this, mMainThread.getApplicationThread(),
                mToken, this, intents);
    }

    /**
     * Like {@link #startActivity(Intent)}, but taking a IntentSender
     * to start; see
     * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int)}
     * for more information.
     * 
     * @param intent The IntentSender to launch.
     * @param fillInIntent If non-null, this will be provided as the
     * intent parameter to {@link IntentSender#sendIntent}.
     * @param flagsMask Intent flags in the original IntentSender that you
     * would like to change.
     * @param flagsValues Desired values for any bits set in
     * <var>flagsMask</var>
     * @param extraFlags Always set to 0.
     */
    public void startIntentSender(IntentSender intent,
            Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags)
            throws IntentSender.SendIntentException {
        startIntentSenderForResult(intent, -1, fillInIntent, flagsMask,
                flagsValues, extraFlags);
    }

    /**
     * A special variation to launch an activity only if a new activity
     * instance is needed to handle the given Intent.  In other words, this is
     * just like {@link #startActivityForResult(Intent, int)} except: if you are 
     * using the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} flag, or
     * singleTask or singleTop 
     * {@link android.R.styleable#AndroidManifestActivity_launchMode launchMode},
     * and the activity 
     * that handles <var>intent</var> is the same as your currently running 
     * activity, then a new instance is not needed.  In this case, instead of 
     * the normal behavior of calling {@link #onNewIntent} this function will 
     * return and you can handle the Intent yourself. 
     * 
     * <p>This function can only be called from a top-level activity; if it is
     * called from a child activity, a runtime exception will be thrown.
     * 
     * @param intent The intent to start.
     * @param requestCode If >= 0, this code will be returned in
     *         onActivityResult() when the activity exits, as described in
     *         {@link #startActivityForResult}.
     * 
     * @return If a new activity was launched then true is returned; otherwise
     *         false is returned and you must handle the Intent yourself.
     *  
     * @see #startActivity
     * @see #startActivityForResult
     */
    public boolean startActivityIfNeeded(Intent intent, int requestCode) {
        if (mParent == null) {
            int result = IActivityManager.START_RETURN_INTENT_TO_CALLER;
            try {
                result = ActivityManagerNative.getDefault()
                    .startActivity(mMainThread.getApplicationThread(),
                            intent, intent.resolveTypeIfNeeded(
                                    getContentResolver()),
                            null, 0,
                            mToken, mEmbeddedID, requestCode, true, false);
            } catch (RemoteException e) {
                // Empty
            }
            
            Instrumentation.checkStartActivityResult(result, intent);
            
            if (requestCode >= 0) {
                // If this start is requesting a result, we can avoid making
                // the activity visible until the result is received.  Setting
                // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the
                // activity hidden during this time, to avoid flickering.
                // This can only be done when a result is requested because
                // that guarantees we will get information back when the
                // activity is finished, no matter what happens to it.
                mStartedActivity = true;
            }
            return result != IActivityManager.START_RETURN_INTENT_TO_CALLER;
        }

        throw new UnsupportedOperationException(
            "startActivityIfNeeded can only be called from a top-level activity");
    }

    /**
     * Special version of starting an activity, for use when you are replacing
     * other activity components.  You can use this to hand the Intent off
     * to the next Activity that can handle it.  You typically call this in
     * {@link #onCreate} with the Intent returned by {@link #getIntent}.
     * 
     * @param intent The intent to dispatch to the next activity.  For
     * correct behavior, this must be the same as the Intent that started
     * your own activity; the only changes you can make are to the extras
     * inside of it.
     * 
     * @return Returns a boolean indicating whether there was another Activity
     * to start: true if there was a next activity to start, false if there
     * wasn't.  In general, if true is returned you will then want to call
     * finish() on yourself.
     */
    public boolean startNextMatchingActivity(Intent intent) {
        if (mParent == null) {
            try {
                return ActivityManagerNative.getDefault()
                    .startNextMatchingActivity(mToken, intent);
            } catch (RemoteException e) {
                // Empty
            }
            return false;
        }

        throw new UnsupportedOperationException(
            "startNextMatchingActivity can only be called from a top-level activity");
    }
    
    /**
     * This is called when a child activity of this one calls its 
     * {@link #startActivity} or {@link #startActivityForResult} method.
     * 
     * <p>This method throws {@link android.content.ActivityNotFoundException}
     * if there was no Activity found to run the given Intent.
     * 
     * @param child The activity making the call.
     * @param intent The intent to start.
     * @param requestCode Reply request code.  < 0 if reply is not requested. 
     * 
     * @throws android.content.ActivityNotFoundException
     * 
     * @see #startActivity 
     * @see #startActivityForResult 
     */
    public void startActivityFromChild(Activity child, Intent intent, 
            int requestCode) {
        Instrumentation.ActivityResult ar =
            mInstrumentation.execStartActivity(
                this, mMainThread.getApplicationThread(), mToken, child,
                intent, requestCode);
        if (ar != null) {
            mMainThread.sendActivityResult(
                mToken, child.mEmbeddedID, requestCode,
                ar.getResultCode(), ar.getResultData());
        }
    }

    /**
     * This is called when a Fragment in this activity calls its 
     * {@link Fragment#startActivity} or {@link Fragment#startActivityForResult}
     * method.
     * 
     * <p>This method throws {@link android.content.ActivityNotFoundException}
     * if there was no Activity found to run the given Intent.
     * 
     * @param fragment The fragment making the call.
     * @param intent The intent to start.
     * @param requestCode Reply request code.  < 0 if reply is not requested. 
     * 
     * @throws android.content.ActivityNotFoundException
     * 
     * @see Fragment#startActivity 
     * @see Fragment#startActivityForResult 
     */
    public void startActivityFromFragment(Fragment fragment, Intent intent, 
            int requestCode) {
        Instrumentation.ActivityResult ar =
            mInstrumentation.execStartActivity(
                this, mMainThread.getApplicationThread(), mToken, fragment,
                intent, requestCode);
        if (ar != null) {
            mMainThread.sendActivityResult(
                mToken, fragment.mWho, requestCode,
                ar.getResultCode(), ar.getResultData());
        }
    }

    /**
     * Like {@link #startActivityFromChild(Activity, Intent, int)}, but
     * taking a IntentSender; see
     * {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int)}
     * for more information.
     */
    public void startIntentSenderFromChild(Activity child, IntentSender intent,
            int requestCode, Intent fillInIntent, int flagsMask, int flagsValues,
            int extraFlags)
            throws IntentSender.SendIntentException {
        startIntentSenderForResultInner(intent, requestCode, fillInIntent,
                flagsMask, flagsValues, child);
    }

    /**
     * Call immediately after one of the flavors of {@link #startActivity(Intent)}
     * or {@link #finish} to specify an explicit transition animation to
     * perform next.
     * @param enterAnim A resource ID of the animation resource to use for
     * the incoming activity.  Use 0 for no animation.
     * @param exitAnim A resource ID of the animation resource to use for
     * the outgoing activity.  Use 0 for no animation.
     */
    public void overridePendingTransition(int enterAnim, int exitAnim) {
        try {
            ActivityManagerNative.getDefault().overridePendingTransition(
                    mToken, getPackageName(), enterAnim, exitAnim);
        } catch (RemoteException e) {
        }
    }
    
    /**
     * Call this to set the result that your activity will return to its
     * caller.
     * 
     * @param resultCode The result code to propagate back to the originating
     *                   activity, often RESULT_CANCELED or RESULT_OK
     * 
     * @see #RESULT_CANCELED
     * @see #RESULT_OK
     * @see #RESULT_FIRST_USER
     * @see #setResult(int, Intent)
     */
    public final void setResult(int resultCode) {
        synchronized (this) {
            mResultCode = resultCode;
            mResultData = null;
        }
    }

    /**
     * Call this to set the result that your activity will return to its
     * caller.
     * 
     * @param resultCode The result code to propagate back to the originating
     *                   activity, often RESULT_CANCELED or RESULT_OK
     * @param data The data to propagate back to the originating activity.
     * 
     * @see #RESULT_CANCELED
     * @see #RESULT_OK
     * @see #RESULT_FIRST_USER
     * @see #setResult(int)
     */
    public final void setResult(int resultCode, Intent data) {
        synchronized (this) {
            mResultCode = resultCode;
            mResultData = data;
        }
    }

    /**
     * Return the name of the package that invoked this activity.  This is who
     * the data in {@link #setResult setResult()} will be sent to.  You can
     * use this information to validate that the recipient is allowed to
     * receive the data.
     * 
     * <p>Note: if the calling activity is not expecting a result (that is it
     * did not use the {@link #startActivityForResult} 
     * form that includes a request code), then the calling package will be 
     * null. 
     * 
     * @return The package of the activity that will receive your
     *         reply, or null if none.
     */
    public String getCallingPackage() {
        try {
            return ActivityManagerNative.getDefault().getCallingPackage(mToken);
        } catch (RemoteException e) {
            return null;
        }
    }

    /**
     * Return the name of the activity that invoked this activity.  This is
     * who the data in {@link #setResult setResult()} will be sent to.  You
     * can use this information to validate that the recipient is allowed to
     * receive the data.
     * 
     * <p>Note: if the calling activity is not expecting a result (that is it
     * did not use the {@link #startActivityForResult} 
     * form that includes a request code), then the calling package will be 
     * null. 
     * 
     * @return String The full name of the activity that will receive your
     *         reply, or null if none.
     */
    public ComponentName getCallingActivity() {
        try {
            return ActivityManagerNative.getDefault().getCallingActivity(mToken);
        } catch (RemoteException e) {
            return null;
        }
    }

    /**
     * Control whether this activity's main window is visible.  This is intended
     * only for the special case of an activity that is not going to show a
     * UI itself, but can't just finish prior to onResume() because it needs
     * to wait for a service binding or such.  Setting this to false allows
     * you to prevent your UI from being shown during that time.
     * 
     * <p>The default value for this is taken from the
     * {@link android.R.attr#windowNoDisplay} attribute of the activity's theme.
     */
    public void setVisible(boolean visible) {
        if (mVisibleFromClient != visible) {
            mVisibleFromClient = visible;
            if (mVisibleFromServer) {
                if (visible) makeVisible();
                else mDecor.setVisibility(View.INVISIBLE);
            }
        }
    }
    
    void makeVisible() {
        if (!mWindowAdded) {
            ViewManager wm = getWindowManager();
            wm.addView(mDecor, getWindow().getAttributes());
            mWindowAdded = true;
        }
        mDecor.setVisibility(View.VISIBLE);
    }
    
    /**
     * Check to see whether this activity is in the process of finishing,
     * either because you called {@link #finish} on it or someone else
     * has requested that it finished.  This is often used in
     * {@link #onPause} to determine whether the activity is simply pausing or
     * completely finishing.
     * 
     * @return If the activity is finishing, returns true; else returns false.
     * 
     * @see #finish
     */
    public boolean isFinishing() {
        return mFinished;
    }

    /**
     * Check to see whether this activity is in the process of being destroyed in order to be
     * recreated with a new configuration. This is often used in
     * {@link #onStop} to determine whether the state needs to be cleaned up or will be passed
     * on to the next instance of the activity via {@link #onRetainNonConfigurationInstance()}.
     * 
     * @return If the activity is being torn down in order to be recreated with a new configuration,
     * returns true; else returns false.
     */
    public boolean isChangingConfigurations() {
        return mChangingConfigurations;
    }

    /**
     * Cause this Activity to be recreated with a new instance.  This results
     * in essentially the same flow as when the Activity is created due to
     * a configuration change -- the current instance will go through its
     * lifecycle to {@link #onDestroy} and a new instance then created after it.
     */
    public void recreate() {
        if (mParent != null) {
            throw new IllegalStateException("Can only be called on top-level activity");
        }
        if (Looper.myLooper() != mMainThread.getLooper()) {
            throw new IllegalStateException("Must be called from main thread");
        }
        mMainThread.requestRelaunchActivity(mToken, null, null, 0, false, null, false);
    }

    /**
     * Call this when your activity is done and should be closed.  The
     * ActivityResult is propagated back to whoever launched you via
     * onActivityResult().
     */
    public void finish() {
        if (mParent == null) {
            int resultCode;
            Intent resultData;
            synchronized (this) {
                resultCode = mResultCode;
                resultData = mResultData;
            }
            if (Config.LOGV) Log.v(TAG, "Finishing self: token=" + mToken);
            try {
                if (ActivityManagerNative.getDefault()
                    .finishActivity(mToken, resultCode, resultData)) {
                    mFinished = true;
                }
            } catch (RemoteException e) {
                // Empty
            }
        } else {
            mParent.finishFromChild(this);
        }
    }

    /**
     * This is called when a child activity of this one calls its 
     * {@link #finish} method.  The default implementation simply calls
     * finish() on this activity (the parent), finishing the entire group.
     * 
     * @param child The activity making the call.
     * 
     * @see #finish
     */
    public void finishFromChild(Activity child) {
        finish();
    }

    /**
     * Force finish another activity that you had previously started with
     * {@link #startActivityForResult}.
     * 
     * @param requestCode The request code of the activity that you had
     *                    given to startActivityForResult().  If there are multiple
     *                    activities started with this request code, they
     *                    will all be finished.
     */
    public void finishActivity(int requestCode) {
        if (mParent == null) {
            try {
                ActivityManagerNative.getDefault()
                    .finishSubActivity(mToken, mEmbeddedID, requestCode);
            } catch (RemoteException e) {
                // Empty
            }
        } else {
            mParent.finishActivityFromChild(this, requestCode);
        }
    }

    /**
     * This is called when a child activity of this one calls its
     * finishActivity().
     * 
     * @param child The activity making the call.
     * @param requestCode Request code that had been used to start the
     *                    activity.
     */
    public void finishActivityFromChild(Activity child, int requestCode) {
        try {
            ActivityManagerNative.getDefault()
                .finishSubActivity(mToken, child.mEmbeddedID, requestCode);
        } catch (RemoteException e) {
            // Empty
        }
    }

    /**
     * Called when an activity you launched exits, giving you the requestCode
     * you started it with, the resultCode it returned, and any additional
     * data from it.  The <var>resultCode</var> will be
     * {@link #RESULT_CANCELED} if the activity explicitly returned that,
     * didn't return any result, or crashed during its operation.
     * 
     * <p>You will receive this call immediately before onResume() when your
     * activity is re-starting.
     * 
     * @param requestCode The integer request code originally supplied to
     *                    startActivityForResult(), allowing you to identify who this
     *                    result came from.
     * @param resultCode The integer result code returned by the child activity
     *                   through its setResult().
     * @param data An Intent, which can return result data to the caller
     *               (various data can be attached to Intent "extras").
     * 
     * @see #startActivityForResult
     * @see #createPendingResult
     * @see #setResult(int)
     */
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    }

    /**
     * Create a new PendingIntent object which you can hand to others 
     * for them to use to send result data back to your 
     * {@link #onActivityResult} callback.  The created object will be either 
     * one-shot (becoming invalid after a result is sent back) or multiple 
     * (allowing any number of results to be sent through it). 
     *  
     * @param requestCode Private request code for the sender that will be
     * associated with the result data when it is returned.  The sender can not
     * modify this value, allowing you to identify incoming results.
     * @param data Default data to supply in the result, which may be modified
     * by the sender.
     * @param flags May be {@link PendingIntent#FLAG_ONE_SHOT PendingIntent.FLAG_ONE_SHOT},
     * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE},
     * {@link PendingIntent#FLAG_CANCEL_CURRENT PendingIntent.FLAG_CANCEL_CURRENT},
     * {@link PendingIntent#FLAG_UPDATE_CURRENT PendingIntent.FLAG_UPDATE_CURRENT},
     * or any of the flags as supported by
     * {@link Intent#fillIn Intent.fillIn()} to control which unspecified parts
     * of the intent that can be supplied when the actual send happens.
     * 
     * @return Returns an existing or new PendingIntent matching the given
     * parameters.  May return null only if
     * {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE} has been
     * supplied.
     * 
     * @see PendingIntent
     */
    public PendingIntent createPendingResult(int requestCode, Intent data,
            int flags) {
        String packageName = getPackageName();
        try {
            IIntentSender target =
                ActivityManagerNative.getDefault().getIntentSender(
                        IActivityManager.INTENT_SENDER_ACTIVITY_RESULT, packageName,
                        mParent == null ? mToken : mParent.mToken,
                        mEmbeddedID, requestCode, new Intent[] { data }, null, flags);
            return target != null ? new PendingIntent(target) : null;
        } catch (RemoteException e) {
            // Empty
        }
        return null;
    }

    /**
     * Change the desired orientation of this activity.  If the activity
     * is currently in the foreground or otherwise impacting the screen
     * orientation, the screen will immediately be changed (possibly causing
     * the activity to be restarted). Otherwise, this will be used the next
     * time the activity is visible.
     * 
     * @param requestedOrientation An orientation constant as used in
     * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}.
     */
    public void setRequestedOrientation(int requestedOrientation) {
        if (mParent == null) {
            try {
                ActivityManagerNative.getDefault().setRequestedOrientation(
                        mToken, requestedOrientation);
            } catch (RemoteException e) {
                // Empty
            }
        } else {
            mParent.setRequestedOrientation(requestedOrientation);
        }
    }
    
    /**
     * Return the current requested orientation of the activity.  This will
     * either be the orientation requested in its component's manifest, or
     * the last requested orientation given to
     * {@link #setRequestedOrientation(int)}.
     * 
     * @return Returns an orientation constant as used in
     * {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}.
     */
    public int getRequestedOrientation() {
        if (mParent == null) {
            try {
                return ActivityManagerNative.getDefault()
                        .getRequestedOrientation(mToken);
            } catch (RemoteException e) {
                // Empty
            }
        } else {
            return mParent.getRequestedOrientation();
        }
        return ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED;
    }
    
    /**
     * Return the identifier of the task this activity is in.  This identifier
     * will remain the same for the lifetime of the activity.
     * 
     * @return Task identifier, an opaque integer.
     */
    public int getTaskId() {
        try {
            return ActivityManagerNative.getDefault()
                .getTaskForActivity(mToken, false);
        } catch (RemoteException e) {
            return -1;
        }
    }

    /**
     * Return whether this activity is the root of a task.  The root is the
     * first activity in a task.
     * 
     * @return True if this is the root activity, else false.
     */
    public boolean isTaskRoot() {
        try {
            return ActivityManagerNative.getDefault()
                .getTaskForActivity(mToken, true) >= 0;
        } catch (RemoteException e) {
            return false;
        }
    }

    /**
     * Move the task containing this activity to the back of the activity
     * stack.  The activity's order within the task is unchanged.
     * 
     * @param nonRoot If false then this only works if the activity is the root
     *                of a task; if true it will work for any activity in
     *                a task.
     * 
     * @return If the task was moved (or it was already at the
     *         back) true is returned, else false.
     */
    public boolean moveTaskToBack(boolean nonRoot) {
        try {
            return ActivityManagerNative.getDefault().moveActivityTaskToBack(
                    mToken, nonRoot);
        } catch (RemoteException e) {
            // Empty
        }
        return false;
    }

    /**
     * Returns class name for this activity with the package prefix removed.
     * This is the default name used to read and write settings.
     * 
     * @return The local class name.
     */
    public String getLocalClassName() {
        final String pkg = getPackageName();
        final String cls = mComponent.getClassName();
        int packageLen = pkg.length();
        if (!cls.startsWith(pkg) || cls.length() <= packageLen
                || cls.charAt(packageLen) != '.') {
            return cls;
        }
        return cls.substring(packageLen+1);
    }
    
    /**
     * Returns complete component name of this activity.
     * 
     * @return Returns the complete component name for this activity
     */
    public ComponentName getComponentName()
    {
        return mComponent;
    }

    /**
     * Retrieve a {@link SharedPreferences} object for accessing preferences
     * that are private to this activity.  This simply calls the underlying
     * {@link #getSharedPreferences(String, int)} method by passing in this activity's
     * class name as the preferences name.
     * 
     * @param mode Operating mode.  Use {@link #MODE_PRIVATE} for the default 
     *             operation, {@link #MODE_WORLD_READABLE} and 
     *             {@link #MODE_WORLD_WRITEABLE} to control permissions.
     *
     * @return Returns the single SharedPreferences instance that can be used
     *         to retrieve and modify the preference values.
     */
    public SharedPreferences getPreferences(int mode) {
        return getSharedPreferences(getLocalClassName(), mode);
    }
    
    private void ensureSearchManager() {
        if (mSearchManager != null) {
            return;
        }
        
        mSearchManager = new SearchManager(this, null);
    }
    
    @Override
    public Object getSystemService(String name) {
        if (getBaseContext() == null) {
            throw new IllegalStateException(
                    "System services not available to Activities before onCreate()");
        }

        if (WINDOW_SERVICE.equals(name)) {
            return mWindowManager;
        } else if (SEARCH_SERVICE.equals(name)) {
            ensureSearchManager();
            return mSearchManager;
        }
        return super.getSystemService(name);
    }

    /**
     * Change the title associated with this activity.  If this is a
     * top-level activity, the title for its window will change.  If it
     * is an embedded activity, the parent can do whatever it wants
     * with it.
     */
    public void setTitle(CharSequence title) {
        mTitle = title;
        onTitleChanged(title, mTitleColor);

        if (mParent != null) {
            mParent.onChildTitleChanged(this, title);
        }
    }

    /**
     * Change the title associated with this activity.  If this is a
     * top-level activity, the title for its window will change.  If it
     * is an embedded activity, the parent can do whatever it wants
     * with it.
     */
    public void setTitle(int titleId) {
        setTitle(getText(titleId));
    }

    public void setTitleColor(int textColor) {
        mTitleColor = textColor;
        onTitleChanged(mTitle, textColor);
    }

    public final CharSequence getTitle() {
        return mTitle;
    }

    public final int getTitleColor() {
        return mTitleColor;
    }

    protected void onTitleChanged(CharSequence title, int color) {
        if (mTitleReady) {
            final Window win = getWindow();
            if (win != null) {
                win.setTitle(title);
                if (color != 0) {
                    win.setTitleColor(color);
                }
            }
        }
    }

    protected void onChildTitleChanged(Activity childActivity, CharSequence title) {
    }

    /**
     * Sets the visibility of the progress bar in the title.
     * <p>
     * In order for the progress bar to be shown, the feature must be requested
     * via {@link #requestWindowFeature(int)}.
     * 
     * @param visible Whether to show the progress bars in the title.
     */
    public final void setProgressBarVisibility(boolean visible) {
        getWindow().setFeatureInt(Window.FEATURE_PROGRESS, visible ? Window.PROGRESS_VISIBILITY_ON :
            Window.PROGRESS_VISIBILITY_OFF);
    }

    /**
     * Sets the visibility of the indeterminate progress bar in the title.
     * <p>
     * In order for the progress bar to be shown, the feature must be requested
     * via {@link #requestWindowFeature(int)}.
     *
     * @param visible Whether to show the progress bars in the title.
     */
    public final void setProgressBarIndeterminateVisibility(boolean visible) {
        getWindow().setFeatureInt(Window.FEATURE_INDETERMINATE_PROGRESS,
                visible ? Window.PROGRESS_VISIBILITY_ON : Window.PROGRESS_VISIBILITY_OFF);
    }
    
    /**
     * Sets whether the horizontal progress bar in the title should be indeterminate (the circular
     * is always indeterminate).
     * <p>
     * In order for the progress bar to be shown, the feature must be requested
     * via {@link #requestWindowFeature(int)}.
     * 
     * @param indeterminate Whether the horizontal progress bar should be indeterminate.
     */
    public final void setProgressBarIndeterminate(boolean indeterminate) {
        getWindow().setFeatureInt(Window.FEATURE_PROGRESS,
                indeterminate ? Window.PROGRESS_INDETERMINATE_ON : Window.PROGRESS_INDETERMINATE_OFF);
    }
    
    /**
     * Sets the progress for the progress bars in the title.
     * <p>
     * In order for the progress bar to be shown, the feature must be requested
     * via {@link #requestWindowFeature(int)}.
     * 
     * @param progress The progress for the progress bar. Valid ranges are from
     *            0 to 10000 (both inclusive). If 10000 is given, the progress
     *            bar will be completely filled and will fade out.
     */
    public final void setProgress(int progress) {
        getWindow().setFeatureInt(Window.FEATURE_PROGRESS, progress + Window.PROGRESS_START);
    }
    
    /**
     * Sets the secondary progress for the progress bar in the title. This
     * progress is drawn between the primary progress (set via
     * {@link #setProgress(int)} and the background. It can be ideal for media
     * scenarios such as showing the buffering progress while the default
     * progress shows the play progress.
     * <p>
     * In order for the progress bar to be shown, the feature must be requested
     * via {@link #requestWindowFeature(int)}.
     * 
     * @param secondaryProgress The secondary progress for the progress bar. Valid ranges are from
     *            0 to 10000 (both inclusive).
     */
    public final void setSecondaryProgress(int secondaryProgress) {
        getWindow().setFeatureInt(Window.FEATURE_PROGRESS,
                secondaryProgress + Window.PROGRESS_SECONDARY_START);
    }

    /**
     * Suggests an audio stream whose volume should be changed by the hardware
     * volume controls.
     * <p>
     * The suggested audio stream will be tied to the window of this Activity.
     * If the Activity is switched, the stream set here is no longer the
     * suggested stream. The client does not need to save and restore the old
     * suggested stream value in onPause and onResume.
     * 
     * @param streamType The type of the audio stream whose volume should be
     *        changed by the hardware volume controls. It is not guaranteed that
     *        the hardware volume controls will always change this stream's
     *        volume (for example, if a call is in progress, its stream's volume
     *        may be changed instead). To reset back to the default, use
     *        {@link AudioManager#USE_DEFAULT_STREAM_TYPE}.
     */
    public final void setVolumeControlStream(int streamType) {
        getWindow().setVolumeControlStream(streamType);
    }

    /**
     * Gets the suggested audio stream whose volume should be changed by the
     * harwdare volume controls.
     * 
     * @return The suggested audio stream type whose volume should be changed by
     *         the hardware volume controls.
     * @see #setVolumeControlStream(int)
     */
    public final int getVolumeControlStream() {
        return getWindow().getVolumeControlStream();
    }
    
    /**
     * Runs the specified action on the UI thread. If the current thread is the UI
     * thread, then the action is executed immediately. If the current thread is
     * not the UI thread, the action is posted to the event queue of the UI thread.
     *
     * @param action the action to run on the UI thread
     */
    public final void runOnUiThread(Runnable action) {
        if (Thread.currentThread() != mUiThread) {
            mHandler.post(action);
        } else {
            action.run();
        }
    }

    /**
     * Standard implementation of
     * {@link android.view.LayoutInflater.Factory#onCreateView} used when
     * inflating with the LayoutInflater returned by {@link #getSystemService}.
     * This implementation does nothing and is for
     * pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB} apps.  Newer apps
     * should use {@link #onCreateView(View, String, Context, AttributeSet)}.
     *
     * @see android.view.LayoutInflater#createView
     * @see android.view.Window#getLayoutInflater
     */
    public View onCreateView(String name, Context context, AttributeSet attrs) {
        return null;
    }

    /**
     * Standard implementation of
     * {@link android.view.LayoutInflater.Factory2#onCreateView(View, String, Context, AttributeSet)}
     * used when inflating with the LayoutInflater returned by {@link #getSystemService}.
     * This implementation handles <fragment> tags to embed fragments inside
     * of the activity.
     *
     * @see android.view.LayoutInflater#createView
     * @see android.view.Window#getLayoutInflater
     */
    public View onCreateView(View parent, String name, Context context, AttributeSet attrs) {
        if (!"fragment".equals(name)) {
            return onCreateView(name, context, attrs);
        }
        
        String fname = attrs.getAttributeValue(null, "class");
        TypedArray a = 
            context.obtainStyledAttributes(attrs, com.android.internal.R.styleable.Fragment);
        if (fname == null) {
            fname = a.getString(com.android.internal.R.styleable.Fragment_name);
        }
        int id = a.getResourceId(com.android.internal.R.styleable.Fragment_id, View.NO_ID);
        String tag = a.getString(com.android.internal.R.styleable.Fragment_tag);
        a.recycle();
        
        int containerId = parent != null ? parent.getId() : 0;
        if (containerId == View.NO_ID && id == View.NO_ID && tag == null) {
            throw new IllegalArgumentException(attrs.getPositionDescription()
                    + ": Must specify unique android:id, android:tag, or have a parent with an id for " + fname);
        }

        // If we restored from a previous state, we may already have
        // instantiated this fragment from the state and should use
        // that instance instead of making a new one.
        Fragment fragment = id != View.NO_ID ? mFragments.findFragmentById(id) : null;
        if (fragment == null && tag != null) {
            fragment = mFragments.findFragmentByTag(tag);
        }
        if (fragment == null && containerId != View.NO_ID) {
            fragment = mFragments.findFragmentById(containerId);
        }

        if (FragmentManagerImpl.DEBUG) Log.v(TAG, "onCreateView: id=0x"
                + Integer.toHexString(id) + " fname=" + fname
                + " existing=" + fragment);
        if (fragment == null) {
            fragment = Fragment.instantiate(this, fname);
            fragment.mFromLayout = true;
            fragment.mFragmentId = id != 0 ? id : containerId;
            fragment.mContainerId = containerId;
            fragment.mTag = tag;
            fragment.mInLayout = true;
            fragment.mImmediateActivity = this;
            fragment.mFragmentManager = mFragments;
            fragment.onInflate(attrs, fragment.mSavedFragmentState);
            mFragments.addFragment(fragment, true);

        } else if (fragment.mInLayout) {
            // A fragment already exists and it is not one we restored from
            // previous state.
            throw new IllegalArgumentException(attrs.getPositionDescription()
                    + ": Duplicate id 0x" + Integer.toHexString(id)
                    + ", tag " + tag + ", or parent id 0x" + Integer.toHexString(containerId)
                    + " with another fragment for " + fname);
        } else {
            // This fragment was retained from a previous instance; get it
            // going now.
            fragment.mInLayout = true;
            fragment.mImmediateActivity = this;
            // If this fragment is newly instantiated (either right now, or
            // from last saved state), then give it the attributes to
            // initialize itself.
            if (!fragment.mRetaining) {
                fragment.onInflate(attrs, fragment.mSavedFragmentState);
            }
            mFragments.moveToState(fragment);
        }

        if (fragment.mView == null) {
            throw new IllegalStateException("Fragment " + fname
                    + " did not create a view.");
        }
        if (id != 0) {
            fragment.mView.setId(id);
        }
        if (fragment.mView.getTag() == null) {
            fragment.mView.setTag(tag);
        }
        return fragment.mView;
    }

    /**
     * Print the Activity's state into the given stream.  This gets invoked if
     * you run "adb shell dumpsys activity <activity_component_name>".
     *
     * @param prefix Desired prefix to prepend at each line of output.
     * @param fd The raw file descriptor that the dump is being sent to.
     * @param writer The PrintWriter to which you should dump your state.  This will be
     * closed for you after you return.
     * @param args additional arguments to the dump request.
     */
    public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) {
        writer.print(prefix); writer.print("Local Activity ");
                writer.print(Integer.toHexString(System.identityHashCode(this)));
                writer.println(" State:");
        String innerPrefix = prefix + "  ";
        writer.print(innerPrefix); writer.print("mResumed=");
                writer.print(mResumed); writer.print(" mStopped=");
                writer.print(mStopped); writer.print(" mFinished=");
                writer.println(mFinished);
        writer.print(innerPrefix); writer.print("mLoadersStarted=");
                writer.println(mLoadersStarted);
        writer.print(innerPrefix); writer.print("mChangingConfigurations=");
                writer.println(mChangingConfigurations);
        writer.print(innerPrefix); writer.print("mCurrentConfig=");
                writer.println(mCurrentConfig);
        if (mLoaderManager != null) {
            writer.print(prefix); writer.print("Loader Manager ");
                    writer.print(Integer.toHexString(System.identityHashCode(mLoaderManager)));
                    writer.println(":");
            mLoaderManager.dump(prefix + "  ", fd, writer, args);
        }
        mFragments.dump(prefix, fd, writer, args);
    }

    /**
     * Bit indicating that this activity is "immersive" and should not be
     * interrupted by notifications if possible.
     *
     * This value is initially set by the manifest property
     * <code>android:immersive</code> but may be changed at runtime by
     * {@link #setImmersive}.
     *
     * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE
     * @hide
     */
    public boolean isImmersive() {
        try {
            return ActivityManagerNative.getDefault().isImmersive(mToken);
        } catch (RemoteException e) {
            return false;
        }
    }

    /**
     * Adjust the current immersive mode setting.
     * 
     * Note that changing this value will have no effect on the activity's
     * {@link android.content.pm.ActivityInfo} structure; that is, if
     * <code>android:immersive</code> is set to <code>true</code>
     * in the application's manifest entry for this activity, the {@link
     * android.content.pm.ActivityInfo#flags ActivityInfo.flags} member will
     * always have its {@link android.content.pm.ActivityInfo#FLAG_IMMERSIVE
     * FLAG_IMMERSIVE} bit set.
     *
     * @see #isImmersive
     * @see android.content.pm.ActivityInfo#FLAG_IMMERSIVE
     * @hide
     */
    public void setImmersive(boolean i) {
        try {
            ActivityManagerNative.getDefault().setImmersive(mToken, i);
        } catch (RemoteException e) {
            // pass
        }
    }

    /**
     * Start an action mode.
     *
     * @param callback Callback that will manage lifecycle events for this context mode
     * @return The ContextMode that was started, or null if it was canceled
     *
     * @see ActionMode
     */
    public ActionMode startActionMode(ActionMode.Callback callback) {
        return mWindow.getDecorView().startActionMode(callback);
    }

    /**
     * Give the Activity a chance to control the UI for an action mode requested
     * by the system.
     *
     * <p>Note: If you are looking for a notification callback that an action mode
     * has been started for this activity, see {@link #onActionModeStarted(ActionMode)}.</p>
     *
     * @param callback The callback that should control the new action mode
     * @return The new action mode, or <code>null</code> if the activity does not want to
     *         provide special handling for this action mode. (It will be handled by the system.)
     */
    public ActionMode onWindowStartingActionMode(ActionMode.Callback callback) {
        initActionBar();
        if (mActionBar != null) {
            return mActionBar.startActionMode(callback);
        }
        return null;
    }

    /**
     * Notifies the Activity that an action mode has been started.
     * Activity subclasses overriding this method should call the superclass implementation.
     *
     * @param mode The new action mode.
     */
    public void onActionModeStarted(ActionMode mode) {
    }

    /**
     * Notifies the activity that an action mode has finished.
     * Activity subclasses overriding this method should call the superclass implementation.
     *
     * @param mode The action mode that just finished.
     */
    public void onActionModeFinished(ActionMode mode) {
    }

    // ------------------ Internal API ------------------
    
    final void setParent(Activity parent) {
        mParent = parent;
    }

    final void attach(Context context, ActivityThread aThread, Instrumentation instr, IBinder token,
            Application application, Intent intent, ActivityInfo info, CharSequence title, 
            Activity parent, String id, NonConfigurationInstances lastNonConfigurationInstances,
            Configuration config) {
        attach(context, aThread, instr, token, 0, application, intent, info, title, parent, id,
            lastNonConfigurationInstances, config);
    }
    
    final void attach(Context context, ActivityThread aThread,
            Instrumentation instr, IBinder token, int ident,
            Application application, Intent intent, ActivityInfo info,
            CharSequence title, Activity parent, String id,
            NonConfigurationInstances lastNonConfigurationInstances,
            Configuration config) {
        attachBaseContext(context);

        mFragments.attachActivity(this);
        
        mWindow = PolicyManager.makeNewWindow(this);
        mWindow.setCallback(this);
        mWindow.getLayoutInflater().setFactory2(this);
        if (info.softInputMode != WindowManager.LayoutParams.SOFT_INPUT_STATE_UNSPECIFIED) {
            mWindow.setSoftInputMode(info.softInputMode);
        }
        mUiThread = Thread.currentThread();
        
        mMainThread = aThread;
        mInstrumentation = instr;
        mToken = token;
        mIdent = ident;
        mApplication = application;
        mIntent = intent;
        mComponent = intent.getComponent();
        mActivityInfo = info;
        mTitle = title;
        mParent = parent;
        mEmbeddedID = id;
        mLastNonConfigurationInstances = lastNonConfigurationInstances;

        mWindow.setWindowManager(null, mToken, mComponent.flattenToString(),
                (info.flags & ActivityInfo.FLAG_HARDWARE_ACCELERATED) != 0);
        if (mParent != null) {
            mWindow.setContainer(mParent.getWindow());
        }
        mWindowManager = mWindow.getWindowManager();
        mCurrentConfig = config;
    }

    final IBinder getActivityToken() {
        return mParent != null ? mParent.getActivityToken() : mToken;
    }

    final void performCreate(Bundle icicle) {
        onCreate(icicle);
        mVisibleFromClient = !mWindow.getWindowStyle().getBoolean(
                com.android.internal.R.styleable.Window_windowNoDisplay, false);
        mFragments.dispatchActivityCreated();
    }
    
    final void performStart() {
        mFragments.noteStateNotSaved();
        mCalled = false;
        mFragments.execPendingActions();
        mInstrumentation.callActivityOnStart(this);
        if (!mCalled) {
            throw new SuperNotCalledException(
                "Activity " + mComponent.toShortString() +
                " did not call through to super.onStart()");
        }
        mFragments.dispatchStart();
        if (mAllLoaderManagers != null) {
            for (int i=mAllLoaderManagers.size()-1; i>=0; i--) {
                mAllLoaderManagers.valueAt(i).finishRetain();
            }
        }
    }
    
    final void performRestart() {
        mFragments.noteStateNotSaved();

        synchronized (mManagedCursors) {
            final int N = mManagedCursors.size();
            for (int i=0; i<N; i++) {
                ManagedCursor mc = mManagedCursors.get(i);
                if (mc.mReleased || mc.mUpdated) {
                    if (!mc.mCursor.requery()) {
                        throw new IllegalStateException(
                                "trying to requery an already closed cursor");
                    }
                    mc.mReleased = false;
                    mc.mUpdated = false;
                }
            }
        }

        if (mStopped) {
            mStopped = false;
            mCalled = false;
            mInstrumentation.callActivityOnRestart(this);
            if (!mCalled) {
                throw new SuperNotCalledException(
                    "Activity " + mComponent.toShortString() +
                    " did not call through to super.onRestart()");
            }
            performStart();
        }
    }
    
    final void performResume() {
        performRestart();
        
        mFragments.execPendingActions();
        
        mLastNonConfigurationInstances = null;
        
        // First call onResume() -before- setting mResumed, so we don't
        // send out any status bar / menu notifications the client makes.
        mCalled = false;
        mInstrumentation.callActivityOnResume(this);
        if (!mCalled) {
            throw new SuperNotCalledException(
                "Activity " + mComponent.toShortString() +
                " did not call through to super.onResume()");
        }

        // Now really resume, and install the current status bar and menu.
        mResumed = true;
        mCalled = false;
        
        mFragments.dispatchResume();
        mFragments.execPendingActions();
        
        onPostResume();
        if (!mCalled) {
            throw new SuperNotCalledException(
                "Activity " + mComponent.toShortString() +
                " did not call through to super.onPostResume()");
        }
    }

    final void performPause() {
        mFragments.dispatchPause();
        mCalled = false;
        onPause();
        if (!mCalled && getApplicationInfo().targetSdkVersion
                >= android.os.Build.VERSION_CODES.GINGERBREAD) {
            throw new SuperNotCalledException(
                    "Activity " + mComponent.toShortString() +
                    " did not call through to super.onPause()");
        }
    }
    
    final void performUserLeaving() {
        onUserInteraction();
        onUserLeaveHint();
    }
    
    final void performStop() {
        if (mLoadersStarted) {
            mLoadersStarted = false;
            if (mLoaderManager != null) {
                if (!mChangingConfigurations) {
                    mLoaderManager.doStop();
                } else {
                    mLoaderManager.doRetain();
                }
            }
        }
        
        if (!mStopped) {
            if (mWindow != null) {
                mWindow.closeAllPanels();
            }

            mFragments.dispatchStop();
            
            mCalled = false;
            mInstrumentation.callActivityOnStop(this);
            if (!mCalled) {
                throw new SuperNotCalledException(
                    "Activity " + mComponent.toShortString() +
                    " did not call through to super.onStop()");
            }
    
            synchronized (mManagedCursors) {
                final int N = mManagedCursors.size();
                for (int i=0; i<N; i++) {
                    ManagedCursor mc = mManagedCursors.get(i);
                    if (!mc.mReleased) {
                        mc.mCursor.deactivate();
                        mc.mReleased = true;
                    }
                }
            }
    
            mStopped = true;
        }
        mResumed = false;
    }

    final void performDestroy() {
        mWindow.destroy();
        mFragments.dispatchDestroy();
        onDestroy();
        if (mLoaderManager != null) {
            mLoaderManager.doDestroy();
        }
    }
    
    final boolean isResumed() {
        return mResumed;
    }

    void dispatchActivityResult(String who, int requestCode, 
        int resultCode, Intent data) {
        if (Config.LOGV) Log.v(
            TAG, "Dispatching result: who=" + who + ", reqCode=" + requestCode
            + ", resCode=" + resultCode + ", data=" + data);
        mFragments.noteStateNotSaved();
        if (who == null) {
            onActivityResult(requestCode, resultCode, data);
        } else {
            Fragment frag = mFragments.findFragmentByWho(who);
            if (frag != null) {
                frag.onActivityResult(requestCode, resultCode, data);
            }
        }
    }
}