Default lock screen comes up in few devices after my lock screen app

Question

I have disabled the default pattern/PIN lock using the following code in my lock screen app.

KeyguardManager km = (KeyguardManager) getSystemService(KEYGUARD_SERVICE);
k1 = km.newKeyguardLock("IN");
k1.disableKeyguard();

Also, i have used the FLAG_DISMISS_KEYGUARD.

It is working fine in my Moto G. But, few devices are showing the default Pattern lock after my lock screen. How can i fix it? What could be the issue?

Answer 1

Besides FLAG_DISMISS_KEYGUARD, you may need: FLAG_KEEP_SCREEN_ON, FLAG_SHOW_WHEN_LOCKED and FLAG_TURN_SCREEN_ON also.

i.e.

getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON|
            WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD|
            WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED|
            WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);