Programmatically turn screen on in android

Question

I am developing an alarm application. From the main activity i set the alarm using broadcast. Then in onReceive in broadcast receiver i call activity that is enabling user t

Answer 1

I started off much like you, and the window flags didn't really work.

I finally got it to work by using two Android services: KEYGUARD_SERVICE and POWER_SERVICE:

KeyguardManager km = (KeyguardManager) context.getSystemService(Context.KEYGUARD_SERVICE);
final KeyguardManager.KeyguardLock kl = km.newKeyguardLock("MyKeyguardLock");
kl.disableKeyguard();

PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
wakeLock = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP
        | PowerManager.ON_AFTER_RELEASE, "MyWakeLock");
wakeLock.acquire();

Don't forget to release the wake lock when you're done with it.

You'll need to request permissions DISABLE_KEYGUARD and WAKE_LOCK