private new (context: NativeActivity, sender_object: Button)
	import Button.on_click in "Java" `{
		final nit.app.NitObject final_sender_object = sender_object;
		Button_incr_ref(final_sender_object);

		return new android.widget.Button(context) {
			@Override
			public boolean onTouchEvent(android.view.MotionEvent event) {
				if (event.getAction() == android.view.MotionEvent.ACTION_UP) {
					Button_on_click(final_sender_object);
					return true;
				} else if (event.getAction() == android.view.MotionEvent.ACTION_DOWN) {
					return true;
				}
				return false;
			}
		};
	`}