Android,Easy Lessons...

Lock and unlock phone in android programmatically/ Lock phone using power manager/wave lock in android/Turn screen off in android/Display screen off in android To turn screen on in android, use the code below powermanager =  ((PowerManager) context .getSystemService(Context. POWER_SERVICE ));                   wakeLock = powermanager .newWakeLock(PowerManager. SCREEN_BRIGHT_WAKE_LOCK | PowerManager. ACQUIRE_CAUSES_WAKEUP , "tag" );             wakeLock . acquire (); To lock or to turn off display screen off, use the code below       if ( wakeLock .isHeld())             {                   wakeLock .release();             } ...