DockObserverpublic final class DockObserver extends SystemService | DockObserver monitors for a docking station. |
| Fields Summary |
|---|
| private static final String | TAG | | private static final String | DOCK_UEVENT_MATCH | | private static final String | DOCK_STATE_PATH | | private static final int | MSG_DOCK_STATE_CHANGED | | private final android.os.PowerManager | mPowerManager | | private final PowerManager.WakeLock | mWakeLock | | private final Object | mLock | | private boolean | mSystemReady | | private int | mActualDockState | | private int | mReportedDockState | | private int | mPreviousDockState | | private boolean | mUpdatesStopped | | private final boolean | mAllowTheaterModeWakeFromDock | | private final android.os.Handler | mHandler | | private final android.os.UEventObserver | mObserver |
| Constructors Summary |
|---|
public DockObserver(android.content.Context context)
super(context);
mPowerManager = (PowerManager)context.getSystemService(Context.POWER_SERVICE);
mWakeLock = mPowerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG);
mAllowTheaterModeWakeFromDock = context.getResources().getBoolean(
com.android.internal.R.bool.config_allowTheaterModeWakeFromDock);
init(); // set initial status
mObserver.startObserving(DOCK_UEVENT_MATCH);
|
| Methods Summary |
|---|
| private void | handleDockStateChange()
synchronized (mLock) {
Slog.i(TAG, "Dock state changed from " + mPreviousDockState + " to "
+ mReportedDockState);
final int previousDockState = mPreviousDockState;
mPreviousDockState = mReportedDockState;
// Skip the dock intent if not yet provisioned.
final ContentResolver cr = getContext().getContentResolver();
if (Settings.Global.getInt(cr,
Settings.Global.DEVICE_PROVISIONED, 0) == 0) {
Slog.i(TAG, "Device not provisioned, skipping dock broadcast");
return;
}
// Pack up the values and broadcast them to everyone
Intent intent = new Intent(Intent.ACTION_DOCK_EVENT);
intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING);
intent.putExtra(Intent.EXTRA_DOCK_STATE, mReportedDockState);
// Play a sound to provide feedback to confirm dock connection.
// Particularly useful for flaky contact pins...
if (Settings.Global.getInt(cr,
Settings.Global.DOCK_SOUNDS_ENABLED, 1) == 1) {
String whichSound = null;
if (mReportedDockState == Intent.EXTRA_DOCK_STATE_UNDOCKED) {
if ((previousDockState == Intent.EXTRA_DOCK_STATE_DESK) ||
(previousDockState == Intent.EXTRA_DOCK_STATE_LE_DESK) ||
(previousDockState == Intent.EXTRA_DOCK_STATE_HE_DESK)) {
whichSound = Settings.Global.DESK_UNDOCK_SOUND;
} else if (previousDockState == Intent.EXTRA_DOCK_STATE_CAR) {
whichSound = Settings.Global.CAR_UNDOCK_SOUND;
}
} else {
if ((mReportedDockState == Intent.EXTRA_DOCK_STATE_DESK) ||
(mReportedDockState == Intent.EXTRA_DOCK_STATE_LE_DESK) ||
(mReportedDockState == Intent.EXTRA_DOCK_STATE_HE_DESK)) {
whichSound = Settings.Global.DESK_DOCK_SOUND;
} else if (mReportedDockState == Intent.EXTRA_DOCK_STATE_CAR) {
whichSound = Settings.Global.CAR_DOCK_SOUND;
}
}
if (whichSound != null) {
final String soundPath = Settings.Global.getString(cr, whichSound);
if (soundPath != null) {
final Uri soundUri = Uri.parse("file://" + soundPath);
if (soundUri != null) {
final Ringtone sfx = RingtoneManager.getRingtone(
getContext(), soundUri);
if (sfx != null) {
sfx.setStreamType(AudioManager.STREAM_SYSTEM);
sfx.play();
}
}
}
}
}
// Send the dock event intent.
// There are many components in the system watching for this so as to
// adjust audio routing, screen orientation, etc.
getContext().sendStickyBroadcastAsUser(intent, UserHandle.ALL);
}
| | private void | init()
synchronized (mLock) {
try {
char[] buffer = new char[1024];
FileReader file = new FileReader(DOCK_STATE_PATH);
try {
int len = file.read(buffer, 0, 1024);
setActualDockStateLocked(Integer.valueOf((new String(buffer, 0, len)).trim()));
mPreviousDockState = mActualDockState;
} finally {
file.close();
}
} catch (FileNotFoundException e) {
Slog.w(TAG, "This kernel does not have dock station support");
} catch (Exception e) {
Slog.e(TAG, "" , e);
}
}
| | public void | onBootPhase(int phase)
if (phase == PHASE_ACTIVITY_MANAGER_READY) {
synchronized (mLock) {
mSystemReady = true;
// don't bother broadcasting undocked here
if (mReportedDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED) {
updateLocked();
}
}
}
| | public void | onStart()
publishBinderService(TAG, new BinderService());
| | private void | setActualDockStateLocked(int newState)
mActualDockState = newState;
if (!mUpdatesStopped) {
setDockStateLocked(newState);
}
| | private void | setDockStateLocked(int newState)
if (newState != mReportedDockState) {
mReportedDockState = newState;
if (mSystemReady) {
// Wake up immediately when docked or undocked except in theater mode.
if (mAllowTheaterModeWakeFromDock
|| Settings.Global.getInt(getContext().getContentResolver(),
Settings.Global.THEATER_MODE_ON, 0) == 0) {
mPowerManager.wakeUp(SystemClock.uptimeMillis());
}
updateLocked();
}
}
| | private void | updateLocked()
mWakeLock.acquire();
mHandler.sendEmptyMessage(MSG_DOCK_STATE_CHANGED);
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