popupwindow 的有关问题

popupwindow 的有关问题 popupwindow çš„é??é?? popupwindow æ??ç,ºå??﵌å??è??å??ç‚?å‡?é??popupwindowæ??ç,ºåŒºåŸŸïµŒå?‚ä??è??è??ä?ªpopupwindowçª?å??æ?ˆå,?ﵟè??å??å??﵌è??è??ïµ?ïµ? ------æœ?ä??è??å†?æ??æ?ˆ-------------------------------------------------------- if (pop == null) { pop = new PopupWindow(menuview, screenWidth/2, screenHeight/2, true); pop.setBackgroundDrawable(this.getResources().getDrawable(R.drawable.select_device_bg)); pop.setTouchInterceptor(new OnTouchListener(){ public boolean onTouch(View v, MotionEvent event) { // TODO Auto-generated method stub if(event.getAction() == MotionEvent.ACTION_OUTSIDE) { pop.dismiss(); } return false; } }); // pop.setAnimationStyle(R.style.PopupAnimation); pop.setOutsideTouchable(true); pop.showAsDropDown(view, Gravity.CENTER_HORIZONTAL, 0); pop.update(); } else { if (pop.isShowing()) { pop.dismiss(); pop = null; ------å…?ä??è??å†?æ??æ?ˆ-------------------------------------------------------- è??è??æ,µä?Šã?‚ä??è??æ??æ??有è??ç??setBackgroundDrawable﵌è??ç??ä??å??ç‚?å‡?é??PopupWindowå??å??ä?,æ?ˆå,?了ã?‚