private void writeLcdDensityPreference(final Context context, final int density) {
final IActivityManager am =
ActivityManagerNative.asInterface(ServiceManager.checkService("activity"));
final IWindowManager wm =
IWindowManager.Stub.asInterface(ServiceManager.checkService(Context.WINDOW_SERVICE));
AsyncTask<Void, Void, Void> task =
new AsyncTask<Void, Void, Void>() {
@Override
protected void onPreExecute() {
ProgressDialog dialog = new ProgressDialog(context);
dialog.setMessage(getResources().getString(R.string.restarting_ui));
dialog.setCancelable(false);
dialog.setIndeterminate(true);
dialog.show();
}
@Override
protected Void doInBackground(Void... params) {
// Give the user a second to see the dialog
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
// Ignore
}
try {
wm.setForcedDisplayDensity(Display.DEFAULT_DISPLAY, density);
} catch (RemoteException e) {
Log.e(TAG, "Failed to set density to " + density, e);
}
// Restart the UI
try {
am.restart();
} catch (RemoteException e) {
Log.e(TAG, "Failed to restart");
}
return null;
}
};
task.execute();
}
/**
* Makes sure we handle the shutdown gracefully. Shuts off power regardless of radio and bluetooth
* state if the alloted time has passed.
*/
public void run() {
BroadcastReceiver br =
new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
// We don't allow apps to cancel this, so ignore the result.
actionDone();
}
};
/*
* Write a system property in case the system_server reboots before we
* get to the actual hardware restart. If that happens, we'll retry at
* the beginning of the SystemServer startup.
*/
{
String reason = (mReboot ? "1" : "0") + (mRebootReason != null ? mRebootReason : "");
SystemProperties.set(SHUTDOWN_ACTION_PROPERTY, reason);
}
/*
* If we are rebooting into safe mode, write a system property
* indicating so.
*/
if (mRebootSafeMode) {
SystemProperties.set(REBOOT_SAFEMODE_PROPERTY, "1");
}
Log.i(TAG, "Sending shutdown broadcast...");
// First send the high-level shut down broadcast.
mActionDone = false;
mContext.sendOrderedBroadcastAsUser(
new Intent(Intent.ACTION_SHUTDOWN), UserHandle.ALL, null, br, mHandler, 0, null, null);
final long endTime = SystemClock.elapsedRealtime() + MAX_BROADCAST_TIME;
synchronized (mActionDoneSync) {
while (!mActionDone) {
long delay = endTime - SystemClock.elapsedRealtime();
if (delay <= 0) {
Log.w(TAG, "Shutdown broadcast timed out");
break;
}
try {
mActionDoneSync.wait(delay);
} catch (InterruptedException e) {
}
}
}
Log.i(TAG, "Shutting down activity manager...");
final IActivityManager am =
ActivityManagerNative.asInterface(ServiceManager.checkService("activity"));
if (am != null) {
try {
am.shutdown(MAX_BROADCAST_TIME);
} catch (RemoteException e) {
}
}
// Shutdown radios.
shutdownRadios(MAX_RADIO_WAIT_TIME);
// Shutdown MountService to ensure media is in a safe state
IMountShutdownObserver observer =
new IMountShutdownObserver.Stub() {
public void onShutDownComplete(int statusCode) throws RemoteException {
Log.w(TAG, "Result code " + statusCode + " from MountService.shutdown");
actionDone();
}
};
Log.i(TAG, "Shutting down MountService");
// Set initial variables and time out time.
mActionDone = false;
final long endShutTime = SystemClock.elapsedRealtime() + MAX_SHUTDOWN_WAIT_TIME;
synchronized (mActionDoneSync) {
try {
final IMountService mount =
IMountService.Stub.asInterface(ServiceManager.checkService("mount"));
if (mount != null) {
mount.shutdown(observer);
} else {
Log.w(TAG, "MountService unavailable for shutdown");
}
} catch (Exception e) {
Log.e(TAG, "Exception during MountService shutdown", e);
}
while (!mActionDone) {
long delay = endShutTime - SystemClock.elapsedRealtime();
if (delay <= 0) {
Log.w(TAG, "Shutdown wait timed out");
break;
}
try {
mActionDoneSync.wait(delay);
} catch (InterruptedException e) {
}
}
}
rebootOrShutdown(mReboot, mRebootReason);
}
/**
* Makes sure we handle the shutdown gracefully. Shuts off power regardless of radio and bluetooth
* state if the alloted time has passed.
*/
public void run() {
boolean bluetoothOff;
boolean radioOff;
BroadcastReceiver br =
new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
// We don't allow apps to cancel this, so ignore the result.
broadcastDone();
}
};
Log.i(TAG, "Sending shutdown broadcast...");
// First send the high-level shut down broadcast.
mBroadcastDone = false;
mContext.sendOrderedBroadcast(
new Intent(Intent.ACTION_SHUTDOWN), null, br, mHandler, 0, null, null);
final long endTime = System.currentTimeMillis() + MAX_BROADCAST_TIME;
synchronized (mBroadcastDoneSync) {
while (!mBroadcastDone) {
long delay = endTime - System.currentTimeMillis();
if (delay <= 0) {
Log.w(TAG, "Shutdown broadcast timed out");
break;
}
try {
mBroadcastDoneSync.wait(delay);
} catch (InterruptedException e) {
}
}
}
Log.i(TAG, "Shutting down activity manager...");
final IActivityManager am =
ActivityManagerNative.asInterface(ServiceManager.checkService("activity"));
if (am != null) {
try {
am.shutdown(MAX_BROADCAST_TIME);
} catch (RemoteException e) {
}
}
final ITelephony phone = ITelephony.Stub.asInterface(ServiceManager.checkService("phone"));
final IBluetooth bluetooth =
IBluetooth.Stub.asInterface(
ServiceManager.checkService(BluetoothAdapter.BLUETOOTH_SERVICE));
final IMountService mount =
IMountService.Stub.asInterface(ServiceManager.checkService("mount"));
try {
bluetoothOff =
bluetooth == null || bluetooth.getBluetoothState() == BluetoothAdapter.STATE_OFF;
if (!bluetoothOff) {
Log.w(TAG, "Disabling Bluetooth...");
bluetooth.disable(false); // disable but don't persist new state
}
} catch (RemoteException ex) {
Log.e(TAG, "RemoteException during bluetooth shutdown", ex);
bluetoothOff = true;
}
try {
radioOff = phone == null || !phone.isRadioOn();
if (!radioOff) {
Log.w(TAG, "Turning off radio...");
phone.setRadio(false);
}
} catch (RemoteException ex) {
Log.e(TAG, "RemoteException during radio shutdown", ex);
radioOff = true;
}
Log.i(TAG, "Waiting for Bluetooth and Radio...");
// Wait a max of 32 seconds for clean shutdown
for (int i = 0; i < MAX_NUM_PHONE_STATE_READS; i++) {
if (!bluetoothOff) {
try {
bluetoothOff = bluetooth.getBluetoothState() == BluetoothAdapter.STATE_OFF;
} catch (RemoteException ex) {
Log.e(TAG, "RemoteException during bluetooth shutdown", ex);
bluetoothOff = true;
}
}
if (!radioOff) {
try {
radioOff = !phone.isRadioOn();
} catch (RemoteException ex) {
Log.e(TAG, "RemoteException during radio shutdown", ex);
radioOff = true;
}
}
if (radioOff && bluetoothOff) {
Log.i(TAG, "Radio and Bluetooth shutdown complete.");
break;
}
SystemClock.sleep(PHONE_STATE_POLL_SLEEP_MSEC);
}
// Shutdown MountService to ensure media is in a safe state
try {
if (mount != null) {
mount.shutdown();
} else {
Log.w(TAG, "MountService unavailable for shutdown");
}
} catch (Exception e) {
Log.e(TAG, "Exception during MountService shutdown", e);
}
// shutdown power
Log.i(TAG, "Performing low-level shutdown...");
Power.shutdown();
}