Android Galaxy S4 — Activity that is visible over lock screen

Question

A few years ago, I wrote an alarm app that worked on Android 2, and I\'m now trying to upgrade it to work on Android 4. Specifically, on the Samsung Galaxy S4.

On A

Answer 1

One of the questions you linked to has an answer that appeared to solve this issue for me.

This is the code I am using which appears to be working:

@Override
public void onAttachedToWindow() {
        Window window = getWindow();

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

        super.onAttachedToWindow();
    }

I'm also explicitly declaring this in the activity definition in the manifest:

Android activity over default lock screen