[PopupWindow] PopupWindow의 터치 처리

Back Key 클릭 시, 닫히게

OutSide 터치 시, 닫히게

다른 View 터치 시, 클릭 되지 않고 닫히게..

    public void show() {
        mListView = getMenuListViewInflater(mContext);
        mPopupWindow = new PopupWindow(mListView, measureContentWidth(), measureContentHeight());
        mPopupWindow.setOutsideTouchable(false);
        mPopupWindow.setTouchable(true);
        mPopupWindow.setFocusable(true);
        mPopupWindow.setBackgroundDrawable(new BitmapDrawable(mContext.getResources(), ""));
        mPopupWindow.showAsDropDown(mAnchor);
    }