Android: How to get the real screen size of the device?

Question

I have tried different ways to get the screen size of the device, but it always returned me the wrong size (791x480 instead of 854x480). It might be du

Answer 1

if you want to get the size in the activity, you can make it by the following code.

findViewById(android.R.id.content).getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
        @Override
        public void onGlobalLayout() {
            View view =  findViewById(android.R.id.content);
            Log.e("test", "root view height is " + view.getHeight());

        }
    });