public class ScreenBroadcastReceiver extends BroadcastReceiver {

public static final String TAG = "ScreenBroadcastReceiver";

private PowerManager mPowerManager;

private PowerManager.WakeLock mWakeLock;

@Override

public void onReceive(Context context, Intent intent) {

Log.d(TAG, "receive intent: " + intent.getAction());

mPowerManager = (PowerManager)context.getSystemService(Context.POWER_SERVICE);

if(Intent.ACTION_SCREEN_OFF.equals(intent.getAction())) {

Log.d(TAG, "light the screen on.");

mWakeLock = mPowerManager.newWakeLock(

PowerManager.FULL_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP,

"ScreenBroadcastReceiver");

mWakeLock.acquire(5000);

}

if(Intent.ACTION_SCREEN_ON.equals(intent.getAction())) {

Log.d(TAG, "start video screen saver.");

Intent i = new Intent("zte.com.cn.action.videoscreensaver");

i.addCategory(Intent.CATEGORY_DEFAULT);

i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP);

context.startActivity(i);

if(mWakeLock != null && mWakeLock.isHeld()) {

Log.d(TAG, "Wake Lock released.");

// wake lock is released automatically after 5s,

// so, we do NOT need to release it.

// if wake lock is released too fast, android 4.1 is behave abnormally.

// mWakeLock.release();

}

}

}

}