How to keep Popup window opened when orientation changes at run time in Android?

Question

I have created a Popup window which contains month view to pick up date. When I changes orientation, due to Android loads an activity all over again my popup Window gets dis

Answer 1

Showing PopupWindow as

final View parent = findViewById(R.id.{parentId});
parent.post(new Runnable() {
    @Override
    public void run() {
        mPopup.showAtLocation(parent, ...);
    }
});

resolves unhandled exception on orientation change