Get root view from current activity

Question

I know how to get the root view with View.getRootView(). I am also able to get the view from a button\'s onClick event where the argument is a View. But how can

Answer 1

Get root view from current activity.

Inside our activity we can get the root view with:

ViewGroup rootView = (ViewGroup) ((ViewGroup) this
            .findViewById(android.R.id.content)).getChildAt(0);

or

View rootView = getWindow().getDecorView().getRootView();