How to programmatically lock screen in Android? [duplicate]

by

Check this class : com.android.internal.policy.impl.LockScreen

Referenced from here: Can you lock screen from your app?

Also check code for enabling and disabling lock Screen in Android. (Referenced from here)

KeyguardManager keyguardManager = (KeyguardManager)getSystemService(Activity.KEYGUARD_SERVICE); 
KeyguardLock lock = keyguardManager.newKeyguardLock(KEYGUARD_SERVICE);

For locking the screen use,

lock.reenableKeyguard();

and for disabling the lock use,

lock.disableKeyguard()

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