How do I get android lockscreen package name

Question

Is there a way to get the android lockscreen package name?

I want to show alert on the lockscreen using AlertDialog.Builder. So I need to know when the lockscreen is active and what it's package name.

Answer 1

You can detect if the lockscreen is shown with:

((KeyguardManager) getSystemService(Context.KEYGUARD_SERVICE)).inKeyguardRestrictedInputMode();

And you can get the current top activity with:

(ActivityManager) getSystemService(Service.ACTIVITY_SERVICE).getRunningTasks(1).get(0).topActivity;

This will usually be the lockscreen activity, but it is possible that for example the phone app is shown while the lockscreen is active: in this case it will be the phone activity.

You will need the android.permission.GET_TASKS permission for this to work.