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
|
/*
* Copyright (C) 2010 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 com.android.settings.wifi;
import static android.net.wifi.WifiConfiguration.INVALID_NETWORK_ID;
import com.android.settings.ProgressCategoryBase;
import com.android.settings.R;
import com.android.settings.SettingsPreferenceFragment;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentFilter;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.net.NetworkInfo.DetailedState;
import android.net.wifi.ScanResult;
import android.net.wifi.SupplicantState;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiConfiguration.KeyMgmt;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.preference.CheckBoxPreference;
import android.preference.Preference;
import android.preference.PreferenceScreen;
import android.provider.Settings.Secure;
import android.security.Credentials;
import android.security.KeyStore;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView.AdapterContextMenuInfo;
import android.widget.Toast;
import java.util.Collection;
import java.util.List;
import java.util.TreeSet;
/**
* This currently provides three types of UI.
*
* Two are for phones with relatively small screens: "for SetupWizard" and "for usual Settings".
* Users just need to launch WifiSettings Activity as usual. The request will be appropriately
* handled by ActivityManager, and they will have appropriate look-and-feel with this fragment.
*
* Third type is for Setup Wizard with X-Large, landscape UI. Users need to launch
* {@link WifiSettingsForSetupWizardXL} Activity, which contains this fragment but also has
* other decorations specific to that screen.
*/
public class WifiSettings extends SettingsPreferenceFragment
implements DialogInterface.OnClickListener {
private static final int MENU_ID_SCAN = Menu.FIRST;
private static final int MENU_ID_ADVANCED = Menu.FIRST + 1;
private static final int MENU_ID_CONNECT = Menu.FIRST + 2;
private static final int MENU_ID_FORGET = Menu.FIRST + 3;
private static final int MENU_ID_MODIFY = Menu.FIRST + 4;
private final IntentFilter mFilter;
private final BroadcastReceiver mReceiver;
private final Scanner mScanner;
private WifiManager mWifiManager;
private WifiEnabler mWifiEnabler;
private CheckBoxPreference mNotifyOpenNetworks;
private ProgressCategoryBase mAccessPoints;
private Preference mAddNetwork;
// An access point being editted is stored here.
private AccessPoint mSelectedAccessPoint;
private boolean mEdit;
private DetailedState mLastState;
private WifiInfo mLastInfo;
private int mKeyStoreNetworkId = INVALID_NETWORK_ID;
private WifiDialog mDialog;
/* Used in Wifi Setup context */
// this boolean extra specifies whether to disable the Next button when not connected
private static final String EXTRA_ENABLE_NEXT_ON_CONNECT = "wifi_enable_next_on_connect";
// Indicates that this fragment is used as a part of Setup Wizard with XL screen settings.
// This fragment should show information which has been shown as Dialog in combined UI
// inside this fragment.
/* package */ static final String IN_XL_SETUP_WIZARD = "in_setup_wizard";
// should Next button only be enabled when we have a connection?
private boolean mEnableNextOnConnection;
private boolean mInXlSetupWizard;
/* End of "used in Wifi Setup context" */
public WifiSettings() {
mFilter = new IntentFilter();
mFilter.addAction(WifiManager.WIFI_STATE_CHANGED_ACTION);
mFilter.addAction(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION);
mFilter.addAction(WifiManager.NETWORK_IDS_CHANGED_ACTION);
mFilter.addAction(WifiManager.SUPPLICANT_STATE_CHANGED_ACTION);
mFilter.addAction(WifiManager.SUPPLICANT_CONFIG_CHANGED_ACTION);
mFilter.addAction(WifiManager.NETWORK_STATE_CHANGED_ACTION);
mFilter.addAction(WifiManager.RSSI_CHANGED_ACTION);
mReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
handleEvent(intent);
}
};
mScanner = new Scanner();
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
// We don't call super.onActivityCreated() here, since it assumes we already set up
// Preference (probably in onCreate()), while WifiSettings exceptionally set it up in
// this method.
mWifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
final Activity activity = getActivity();
final Intent intent = activity.getIntent();
// if we're supposed to enable/disable the Next button based on our current connection
// state, start it off in the right state
mEnableNextOnConnection = intent.getBooleanExtra(EXTRA_ENABLE_NEXT_ON_CONNECT, false);
mInXlSetupWizard = intent.getBooleanExtra(IN_XL_SETUP_WIZARD, false);
if (mEnableNextOnConnection) {
if (mEnableNextOnConnection && hasNextButton()) {
final ConnectivityManager connectivity = (ConnectivityManager)
getActivity().getSystemService(Context.CONNECTIVITY_SERVICE);
if (connectivity != null) {
NetworkInfo info = connectivity.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
changeNextButtonState(info.isConnected());
}
}
}
if (mInXlSetupWizard) {
addPreferencesFromResource(R.xml.wifi_access_points_for_wifi_setup_xl);
} else if (intent.getBooleanExtra("only_access_points", false)) {
addPreferencesFromResource(R.xml.wifi_access_points);
} else {
addPreferencesFromResource(R.xml.wifi_settings);
mWifiEnabler = new WifiEnabler(activity,
(CheckBoxPreference) findPreference("enable_wifi"));
mNotifyOpenNetworks =
(CheckBoxPreference) findPreference("notify_open_networks");
mNotifyOpenNetworks.setChecked(Secure.getInt(getContentResolver(),
Secure.WIFI_NETWORKS_AVAILABLE_NOTIFICATION_ON, 0) == 1);
}
// After confirming PreferenceScreen is available, we call super.
super.onActivityCreated(savedInstanceState);
// This may be either ProgressCategory or AccessPointCategoryForXL.
final ProgressCategoryBase preference =
(ProgressCategoryBase) findPreference("access_points");
mAccessPoints = preference;
mAccessPoints.setOrderingAsAdded(true);
mAddNetwork = findPreference("add_network");
registerForContextMenu(getListView());
setHasOptionsMenu(true);
}
@Override
public void onResume() {
super.onResume();
if (mWifiEnabler != null) {
mWifiEnabler.resume();
}
getActivity().registerReceiver(mReceiver, mFilter);
if (mKeyStoreNetworkId != INVALID_NETWORK_ID &&
KeyStore.getInstance().test() == KeyStore.NO_ERROR) {
mWifiManager.connectNetwork(mKeyStoreNetworkId);
}
mKeyStoreNetworkId = INVALID_NETWORK_ID;
updateAccessPoints();
}
@Override
public void onPause() {
super.onPause();
if (mWifiEnabler != null) {
mWifiEnabler.pause();
}
getActivity().unregisterReceiver(mReceiver);
mScanner.pause();
if (mDialog != null) {
mDialog.dismiss();
mDialog = null;
}
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
// We don't want menus in Setup Wizard XL.
if (!mInXlSetupWizard) {
menu.add(Menu.NONE, MENU_ID_SCAN, 0, R.string.wifi_menu_scan)
.setIcon(R.drawable.ic_menu_scan_network);
menu.add(Menu.NONE, MENU_ID_ADVANCED, 0, R.string.wifi_menu_advanced)
.setIcon(android.R.drawable.ic_menu_manage);
}
super.onCreateOptionsMenu(menu, inflater);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case MENU_ID_SCAN:
if (mWifiManager.isWifiEnabled()) {
mScanner.resume();
}
return true;
case MENU_ID_ADVANCED:
startFragment(this, AdvancedSettings.class.getCanonicalName(), -1, null);
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
public void onCreateContextMenu(ContextMenu menu, View view, ContextMenuInfo info) {
if (info instanceof AdapterContextMenuInfo) {
Preference preference = (Preference) getListView().getItemAtPosition(
((AdapterContextMenuInfo) info).position);
if (preference instanceof AccessPoint) {
mSelectedAccessPoint = (AccessPoint) preference;
menu.setHeaderTitle(mSelectedAccessPoint.ssid);
if (mSelectedAccessPoint.getLevel() != -1
&& mSelectedAccessPoint.getState() == null) {
menu.add(Menu.NONE, MENU_ID_CONNECT, 0, R.string.wifi_menu_connect);
}
if (mSelectedAccessPoint.networkId != INVALID_NETWORK_ID) {
menu.add(Menu.NONE, MENU_ID_FORGET, 0, R.string.wifi_menu_forget);
menu.add(Menu.NONE, MENU_ID_MODIFY, 0, R.string.wifi_menu_modify);
}
}
}
}
@Override
public boolean onContextItemSelected(MenuItem item) {
if (mSelectedAccessPoint == null) {
return super.onContextItemSelected(item);
}
switch (item.getItemId()) {
case MENU_ID_CONNECT: {
if (mSelectedAccessPoint.networkId != INVALID_NETWORK_ID) {
if (!requireKeyStore(mSelectedAccessPoint.getConfig())) {
mWifiManager.connectNetwork(mSelectedAccessPoint.networkId);
}
} else if (mSelectedAccessPoint.security == AccessPoint.SECURITY_NONE) {
// Shortcut for open networks.
WifiConfiguration config = new WifiConfiguration();
config.SSID = AccessPoint.convertToQuotedString(mSelectedAccessPoint.ssid);
config.allowedKeyManagement.set(KeyMgmt.NONE);
mWifiManager.connectNetwork(config);
} else {
showConfigUi(mSelectedAccessPoint, true);
}
return true;
}
case MENU_ID_FORGET: {
mWifiManager.forgetNetwork(mSelectedAccessPoint.networkId);
return true;
}
case MENU_ID_MODIFY: {
showConfigUi(mSelectedAccessPoint, true);
return true;
}
}
return super.onContextItemSelected(item);
}
@Override
public boolean onPreferenceTreeClick(PreferenceScreen screen, Preference preference) {
if (preference instanceof AccessPoint) {
mSelectedAccessPoint = (AccessPoint) preference;
showConfigUi(mSelectedAccessPoint, false);
} else if (preference == mAddNetwork) {
onAddNetworkPressed();
} else if (preference == mNotifyOpenNetworks) {
Secure.putInt(getContentResolver(),
Secure.WIFI_NETWORKS_AVAILABLE_NOTIFICATION_ON,
mNotifyOpenNetworks.isChecked() ? 1 : 0);
} else {
return super.onPreferenceTreeClick(screen, preference);
}
return true;
}
/**
* Shows an appropriate Wifi configuration component.
* Called when a user clicks "Add network" preference or one of available networks is selected.
*/
private void showConfigUi(AccessPoint accessPoint, boolean edit) {
mEdit = edit;
if (mInXlSetupWizard) {
((WifiSettingsForSetupWizardXL)getActivity()).showConfigUi(accessPoint, edit);
} else {
showDialog(accessPoint, edit);
}
}
private void showDialog(AccessPoint accessPoint, boolean edit) {
if (mDialog != null) {
mDialog.dismiss();
}
mDialog = new WifiDialog(getActivity(), this, accessPoint, edit);
mDialog.show();
}
/**
* Called from {@link WifiSettingsForSetupWizardXL} when the object wants to open
* {@link WifiDialog} anyway, though usually it prepares its own simplified UI for
* configuring a wifi network.
*/
/* package */ void showDialogForSelectedPreference() {
showDialog(mSelectedAccessPoint, mEdit);
}
private boolean requireKeyStore(WifiConfiguration config) {
if (WifiConfigController.requireKeyStore(config) &&
KeyStore.getInstance().test() != KeyStore.NO_ERROR) {
mKeyStoreNetworkId = config.networkId;
Credentials.getInstance().unlock(getActivity());
return true;
}
return false;
}
/**
* Shows the latest access points available with supplimental information like
* the strength of network and the security for it.
*/
private void updateAccessPoints() {
mAccessPoints.removeAll();
// AccessPoints are automatically sorted with TreeSet.
final Collection<AccessPoint> accessPoints = constructAccessPoints();
if (mInXlSetupWizard) {
((WifiSettingsForSetupWizardXL)getActivity()).onAccessPointsUpdated(
mAccessPoints, accessPoints);
} else {
for (AccessPoint accessPoint : accessPoints) {
mAccessPoints.addPreference(accessPoint);
}
}
}
private Collection<AccessPoint> constructAccessPoints() {
Collection<AccessPoint> accessPoints =
new TreeSet<AccessPoint>(new AccessPoint.Comparater());
final List<WifiConfiguration> configs = mWifiManager.getConfiguredNetworks();
if (configs != null) {
for (WifiConfiguration config : configs) {
AccessPoint accessPoint = new AccessPoint(getActivity(), config);
accessPoint.update(mLastInfo, mLastState);
accessPoints.add(accessPoint);
}
}
final List<ScanResult> results = mWifiManager.getScanResults();
if (results != null) {
for (ScanResult result : results) {
// Ignore hidden and ad-hoc networks.
if (result.SSID == null || result.SSID.length() == 0 ||
result.capabilities.contains("[IBSS]")) {
continue;
}
boolean found = false;
for (AccessPoint accessPoint : accessPoints) {
if (accessPoint.update(result)) {
found = true;
}
}
if (!found) {
accessPoints.add(new AccessPoint(getActivity(), result));
}
}
}
return accessPoints;
}
private void handleEvent(Intent intent) {
String action = intent.getAction();
if (WifiManager.WIFI_STATE_CHANGED_ACTION.equals(action)) {
updateWifiState(intent.getIntExtra(WifiManager.EXTRA_WIFI_STATE,
WifiManager.WIFI_STATE_UNKNOWN));
} else if (WifiManager.SCAN_RESULTS_AVAILABLE_ACTION.equals(action) ||
WifiManager.SUPPLICANT_CONFIG_CHANGED_ACTION.equals(action)) {
updateAccessPoints();
} else if (WifiManager.SUPPLICANT_STATE_CHANGED_ACTION.equals(action)) {
updateConnectionState(WifiInfo.getDetailedStateOf((SupplicantState)
intent.getParcelableExtra(WifiManager.EXTRA_NEW_STATE)));
} else if (WifiManager.NETWORK_STATE_CHANGED_ACTION.equals(action)) {
NetworkInfo info = (NetworkInfo) intent.getParcelableExtra(
WifiManager.EXTRA_NETWORK_INFO);
changeNextButtonState(info.isConnected());
updateConnectionState(info.getDetailedState());
} else if (WifiManager.RSSI_CHANGED_ACTION.equals(action)) {
updateConnectionState(null);
}
}
private void updateConnectionState(DetailedState state) {
/* sticky broadcasts can call this when wifi is disabled */
if (!mWifiManager.isWifiEnabled()) {
mScanner.pause();
return;
}
if (state == DetailedState.OBTAINING_IPADDR) {
mScanner.pause();
} else {
mScanner.resume();
}
mLastInfo = mWifiManager.getConnectionInfo();
if (state != null) {
mLastState = state;
}
for (int i = mAccessPoints.getPreferenceCount() - 1; i >= 0; --i) {
// Maybe there's a WifiConfigPreference
Preference preference = mAccessPoints.getPreference(i);
if (preference instanceof AccessPoint) {
final AccessPoint accessPoint = (AccessPoint) preference;
accessPoint.update(mLastInfo, mLastState);
}
}
if (mInXlSetupWizard) {
((WifiSettingsForSetupWizardXL)getActivity()).updateConnectionState(mLastState);
}
}
private void updateWifiState(int state) {
if (state == WifiManager.WIFI_STATE_ENABLED) {
mScanner.resume();
} else {
mScanner.pause();
mAccessPoints.removeAll();
}
}
private class Scanner extends Handler {
private int mRetry = 0;
void resume() {
if (!hasMessages(0)) {
sendEmptyMessage(0);
}
}
void pause() {
mRetry = 0;
mAccessPoints.setProgress(false);
removeMessages(0);
}
@Override
public void handleMessage(Message message) {
if (mWifiManager.startScanActive()) {
mRetry = 0;
} else if (++mRetry >= 3) {
mRetry = 0;
Toast.makeText(getActivity(), R.string.wifi_fail_to_scan,
Toast.LENGTH_LONG).show();
return;
}
mAccessPoints.setProgress(mRetry != 0);
// Combo scans can take 5-6s to complete. Increase interval to 10s.
sendEmptyMessageDelayed(0, 10000);
}
}
/**
* Renames/replaces "Next" button when appropriate. "Next" button usually exists in
* Wifi setup screens, not in usual wifi settings screen.
*
* @param connected true when the device is connected to a wifi network.
*/
private void changeNextButtonState(boolean connected) {
if (mInXlSetupWizard) {
((WifiSettingsForSetupWizardXL)getActivity()).changeNextButtonState(connected);
} else if (mEnableNextOnConnection && hasNextButton()) {
getNextButton().setEnabled(connected);
}
}
public void onClick(DialogInterface dialogInterface, int button) {
if (mInXlSetupWizard) {
if (button == WifiDialog.BUTTON_FORGET && mSelectedAccessPoint != null) {
((WifiSettingsForSetupWizardXL)getActivity()).onForgetButtonPressed();
} else if (button == WifiDialog.BUTTON_SUBMIT) {
((WifiSettingsForSetupWizardXL)getActivity()).onConnectButtonPressed();
}
} else {
if (button == WifiDialog.BUTTON_FORGET && mSelectedAccessPoint != null) {
forget();
} else if (button == WifiDialog.BUTTON_SUBMIT) {
submit(mDialog.getController());
}
}
}
/* package */ void submit(WifiConfigController configController) {
switch(configController.chosenNetworkSetupMethod()) {
case WifiConfigController.WPS_PBC:
mWifiManager.startWpsPbc(mSelectedAccessPoint.bssid);
break;
case WifiConfigController.WPS_PIN_FROM_ACCESS_POINT:
int apPin = configController.getWpsPin();
mWifiManager.startWpsWithPinFromAccessPoint(mSelectedAccessPoint.bssid, apPin);
break;
case WifiConfigController.WPS_PIN_FROM_DEVICE:
int pin = mWifiManager.startWpsWithPinFromDevice(mSelectedAccessPoint.bssid);
new AlertDialog.Builder(getActivity())
.setTitle(R.string.wifi_wps_pin_method_configuration)
.setMessage(getResources().getString(R.string.wifi_wps_pin_output, pin))
.setPositiveButton(android.R.string.ok, null)
.show();
break;
case WifiConfigController.MANUAL:
final WifiConfiguration config = configController.getConfig();
if (config == null) {
if (mSelectedAccessPoint != null
&& !requireKeyStore(mSelectedAccessPoint.getConfig())
&& mSelectedAccessPoint.networkId != INVALID_NETWORK_ID) {
mWifiManager.connectNetwork(mSelectedAccessPoint.networkId);
}
} else if (config.networkId != INVALID_NETWORK_ID) {
if (mSelectedAccessPoint != null) {
mWifiManager.saveNetwork(config);
}
} else {
if (configController.isEdit() || requireKeyStore(config)) {
mWifiManager.saveNetwork(config);
} else {
mWifiManager.connectNetwork(config);
}
}
break;
}
if (mWifiManager.isWifiEnabled()) {
mScanner.resume();
}
updateAccessPoints();
}
/* package */ void forget() {
mWifiManager.forgetNetwork(mSelectedAccessPoint.networkId);
if (mWifiManager.isWifiEnabled()) {
mScanner.resume();
}
updateAccessPoints();
// We need to rename/replace "Next" button in wifi setup context.
changeNextButtonState(false);
}
/**
* Refreshes acccess points and ask Wifi module to scan networks again.
*/
/* package */ void refreshAccessPoints() {
if (mWifiManager.isWifiEnabled()) {
mScanner.resume();
}
mAccessPoints.removeAll();
}
/**
* Called when "add network" button is pressed.
*/
/* package */ void onAddNetworkPressed() {
// No exact access point is selected.
mSelectedAccessPoint = null;
showConfigUi(null, true);
}
/* package */ int getAccessPointsCount() {
if (mAccessPoints != null) {
return mAccessPoints.getPreferenceCount();
} else {
return 0;
}
}
/**
* Requests wifi module to pause wifi scan. May be ignored when the module is disabled.
*/
/* package */ void pauseWifiScan() {
if (mWifiManager.isWifiEnabled()) {
mScanner.pause();
}
}
/**
* Requests wifi module to resume wifi scan. May be ignored when the module is disabled.
*/
/* package */ void resumeWifiScan() {
if (mWifiManager.isWifiEnabled()) {
mScanner.resume();
}
}
}
|