Android screen lock/ unlock programmatically [duplicate]

Question

I am working on a app in which I have to lock and unlock the screen programmatically. Kindly help ! I have no any idea how to develop this type of functionality which support each version of Android OS.

Answer 1

To Unlock

KeyguardManager km = (KeyguardManager) getSystemService(Context.KEYGUARD_SERVICE);  final KeyguardManager.KeyguardLock kl = km .newKeyguardLock("MyKeyguardLock");  kl.disableKeyguard();   PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);  WakeLock wakeLock = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK                                  | PowerManager.ACQUIRE_CAUSES_WAKEUP                                  | PowerManager.ON_AFTER_RELEASE, "MyWakeLock"); wakeLock.acquire();