requestFocus not working

Answer 1

I usually use the following to set the focus: Add following attributs to your xml-layout

and set focus programmatically like

((AutoCompleteTextView) findViewById(R.autocomplete_zone)).requestFocus();

f.e. in onResume or onWindowChanged

public void onWindowFocusChanged(boolean hasFocus) {
    super.onWindowFocusChanged(hasFocus);

    if (hasFocus) {
        ((AutoCompleteTextView) findViewById(R.autocomplete_zone)).requestFocus();
    }
}