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
|
/*
* Copyright (C) 2008 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.deviceinfo;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.res.Resources;
import android.os.Bundle;
import android.os.IBinder;
import android.os.RemoteException;
import android.os.Environment;
import android.os.storage.IMountService;
import android.os.ServiceManager;
import android.os.StatFs;
import android.os.storage.StorageManager;
import android.os.storage.StorageEventListener;
import android.preference.Preference;
import android.preference.PreferenceActivity;
import android.preference.PreferenceScreen;
import android.text.format.Formatter;
import android.util.Log;
import com.android.settings.R;
import java.io.File;
import java.text.DecimalFormat;
public class Memory extends PreferenceActivity {
private static final String TAG = "Memory";
private static final String MEMORY_SD_SIZE = "memory_sd_size";
private static final String MEMORY_SD_AVAIL = "memory_sd_avail";
private static final String MEMORY_SD_MOUNT_TOGGLE = "memory_sd_mount_toggle";
private static final String MEMORY_SD_FORMAT = "memory_sd_format";
private Resources mRes;
private Preference mSdSize;
private Preference mSdAvail;
private Preference mSdMountToggle;
private Preference mSdFormat;
// Access using getMountService()
private IMountService mMountService = null;
private StorageManager mStorageManager = null;
@Override
protected void onCreate(Bundle icicle) {
super.onCreate(icicle);
if (mStorageManager == null) {
mStorageManager = (StorageManager) getSystemService(Context.STORAGE_SERVICE);
mStorageManager.registerListener(mStorageListener);
}
addPreferencesFromResource(R.xml.device_info_memory);
mRes = getResources();
mSdSize = findPreference(MEMORY_SD_SIZE);
mSdAvail = findPreference(MEMORY_SD_AVAIL);
mSdMountToggle = findPreference(MEMORY_SD_MOUNT_TOGGLE);
mSdFormat = findPreference(MEMORY_SD_FORMAT);
}
@Override
protected void onResume() {
super.onResume();
IntentFilter intentFilter = new IntentFilter(Intent.ACTION_MEDIA_SCANNER_STARTED);
intentFilter.addAction(Intent.ACTION_MEDIA_SCANNER_FINISHED);
intentFilter.addDataScheme("file");
registerReceiver(mReceiver, intentFilter);
updateMemoryStatus();
}
StorageEventListener mStorageListener = new StorageEventListener() {
public void onVolumeStateChanged(
String label, String path, String oldState, String newState) {
updateMemoryStatus();
}
};
@Override
protected void onPause() {
super.onPause();
unregisterReceiver(mReceiver);
}
private synchronized IMountService getMountService() {
if (mMountService == null) {
IBinder service = ServiceManager.getService("mount");
if (service != null) {
mMountService = IMountService.Stub.asInterface(service);
} else {
Log.e(TAG, "Can't get mount service");
}
}
return mMountService;
}
@Override
public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
if (preference == mSdMountToggle) {
String status = Environment.getExternalStorageState();
if (status.equals(Environment.MEDIA_MOUNTED)) {
unmount();
} else {
mount();
}
return true;
} else if (preference == mSdFormat) {
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setClass(this, com.android.settings.MediaFormat.class);
startActivity(intent);
return true;
}
return false;
}
private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
updateMemoryStatus();
}
};
private void unmount() {
IMountService mountService = getMountService();
try {
if (mountService != null) {
mountService.unmountVolume(Environment.getExternalStorageDirectory().toString());
} else {
Log.e(TAG, "Mount service is null, can't unmount");
}
} catch (RemoteException ex) {
// Failed for some reason, try to update UI to actual state
updateMemoryStatus();
}
}
private void mount() {
IMountService mountService = getMountService();
try {
if (mountService != null) {
mountService.mountVolume(Environment.getExternalStorageDirectory().toString());
} else {
Log.e(TAG, "Mount service is null, can't mount");
}
} catch (RemoteException ex) {
// Failed for some reason, try to update UI to actual state
updateMemoryStatus();
}
}
private void updateMemoryStatus() {
String status = Environment.getExternalStorageState();
String readOnly = "";
if (status.equals(Environment.MEDIA_MOUNTED_READ_ONLY)) {
status = Environment.MEDIA_MOUNTED;
readOnly = mRes.getString(R.string.read_only);
}
mSdFormat.setEnabled(false);
if (status.equals(Environment.MEDIA_MOUNTED)) {
try {
File path = Environment.getExternalStorageDirectory();
StatFs stat = new StatFs(path.getPath());
long blockSize = stat.getBlockSize();
long totalBlocks = stat.getBlockCount();
long availableBlocks = stat.getAvailableBlocks();
mSdSize.setSummary(formatSize(totalBlocks * blockSize));
mSdAvail.setSummary(formatSize(availableBlocks * blockSize) + readOnly);
mSdMountToggle.setEnabled(true);
mSdMountToggle.setTitle(mRes.getString(R.string.sd_eject));
mSdMountToggle.setSummary(mRes.getString(R.string.sd_eject_summary));
} catch (IllegalArgumentException e) {
// this can occur if the SD card is removed, but we haven't received the
// ACTION_MEDIA_REMOVED Intent yet.
status = Environment.MEDIA_REMOVED;
}
} else {
mSdSize.setSummary(mRes.getString(R.string.sd_unavailable));
mSdAvail.setSummary(mRes.getString(R.string.sd_unavailable));
if (status.equals(Environment.MEDIA_UNMOUNTED) ||
status.equals(Environment.MEDIA_NOFS) ||
status.equals(Environment.MEDIA_UNMOUNTABLE) ) {
mSdFormat.setEnabled(true);
mSdMountToggle.setEnabled(true);
mSdMountToggle.setTitle(mRes.getString(R.string.sd_mount));
mSdMountToggle.setSummary(mRes.getString(R.string.sd_mount_summary));
} else {
mSdMountToggle.setEnabled(false);
mSdMountToggle.setTitle(mRes.getString(R.string.sd_mount));
mSdMountToggle.setSummary(mRes.getString(R.string.sd_insert_summary));
}
}
File path = Environment.getDataDirectory();
StatFs stat = new StatFs(path.getPath());
long blockSize = stat.getBlockSize();
long availableBlocks = stat.getAvailableBlocks();
findPreference("memory_internal_avail").setSummary(formatSize(availableBlocks * blockSize));
}
private String formatSize(long size) {
return Formatter.formatFileSize(this, size);
}
}
|
