Detect if app has been minimized android

Question

I want to detect when my app minimizes by the hardware minimize button or code and launch itself again when minimized, i'm using the following code but it does nothing. I think it launches itself but in background.

@Override
    protected void onUserLeaveHint() 
   { 
     launchApp();
        System.out.println("Home Button Pressed");
        super.onUserLeaveHint();
    }

i am calling my intent from the launchApp() method

You can't force the device to run your app in front. However, you can override onPause nor onStop to perform background stuff before it's minimized/closed. — Neria Nachum, Nov 15 '15 at 15:41

score 0 · Answer 1 · edited May 23 '17 at 10:27

You can use Application.registerActivityLifecycleCallbacks() (API >= 14) as described in this answer to execute code if your app goes in the background and is not resumed within a time limit.

However, for most apps you should not need to do this and there might be a better way to achieve what you need - can you explain your use case?

For example, if you need to process long running tasks even when the app is not visible, you could use a Service. Or if you are building an app that is meant to be always visible for some demo purposes, you could set it as a custom launcher.

Detect if app has been minimized android

1 Answers1