PopupWindow

public class TopRightMenu extends PopupWindow {
   private View mainView;

   public TopRightMenu(Activity paramActivity,
         View.OnClickListener paramOnClickListener, int width, int height,
         int layoutId, int[] item_ids) {
      super(paramActivity);
      // 窗口布局
      mainView = LayoutInflater.from(paramActivity).inflate(layoutId, null);

      for (int i = 0; i < item_ids.length; i++) {
         View item = mainView.findViewById(item_ids[i]);
         item.setOnClickListener(paramOnClickListener);
      }
      setContentView(mainView);
      // 设置宽度
      setWidth(width);
      // 设置高度
      setHeight(height);
      // 设置显示隐藏动画
      setAnimationStyle(R.style.AnimTopRight);
      // 设置背景透明
      setBackgroundDrawable(new ColorDrawable(0));
   }

}