Android : Detect the keyguard unlock event

how can i get the keyguard unlock event? i want to show a screen of my app after the key is entered correctly.

i already tried to override public void onPasswordSucceeded(Context context, Intent intent) from the device admin receiver class, but the doku says: "Called after the user has succeeded at entering their current password, as a result of receiving ACTION_PASSWORD_SUCCEEDED. This will only be received the first time they succeed after having previously failed."

i want my screen to appear also if the password is entered correctly on the first time.

regards