Initialization of the Activity after it is first created. Must at least
call {@link android.app.Activity#setContentView setContentView()} to
describe what is to be displayed in the screen.
// Be sure to call the super class.
super.onCreate(savedInstanceState);
// See assets/res/any/layout/dialog_activity.xml for this
// view layout definition, which is being set here as
// the content of our screen.
setContentView(R.layout.custom_dialog_activity);