Overdraw and Romain Guy's blog post Android Performance Case Study

Question

Based upon Romain Guy\'s blog post Android Performance Case Study when talking about Overdraw he says this:

Removing the window background: the backgroun

Answer 1

Just move getWindow().setBackgroundDrawable(null) down, until anywhere after setContentView(R.layout.main); e.g.:

@Override public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    getWindow().setBackgroundDrawable(null);
}

The setContentView(...) call propagates setting the content on the window the activity is attached to and probably overrides the change you meant to made with setBackgroundDrawable(null).

Result: