Android Question App stay on the top of the other app

Does anyone know how to make an app to stay on the top of the other apps. For example, a note app that shows the note on the top of the other apps, and you can still interact with the those app.

I did search on Google and then found the following code written in Java.

It would be great if someone could translate it into B4A code as I myself know nothing about Java.


final WindowManager.LayoutParams params = new WindowManager.LayoutParams(
WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.TYPE_SYSTEM_ALERT,
WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN,
PixelFormat.TRANSLUCENT);

WindowManager wm = (WindowManager) getApplicationContext().getSystemService(Context.WINDOW_SERVICE);

ViewGroup mTopView = (ViewGroup) App.inflater.inflate(R.layout.main, null);
getWindow().setAttributes(params);
wm.addView(mTopView, params);