PopupWinodw設置背景透明

在網上搜索了一下資料。

把PopupWindow設置爲背景透明的方法:

                ColorDrawable dw = new ColorDrawable(-00000);
                popupWindow.setBackgroundDrawable(dw);

 順便把自己寫得代碼也拿出來：

private void showMenus(){
		if(null == floatPopupMenu){
			floatPopupMenu = new PopupWindow(getContext());
			floatPopupMenu.setHeight(LayoutParams.WRAP_CONTENT);
			floatPopupMenu.setWidth(LayoutParams.WRAP_CONTENT);
			FloatBoxMenuView menuView = new FloatBoxMenuView(getContext());
			floatPopupMenu.setContentView(menuView);
			floatPopupMenu.setFocusable(true);
			floatPopupMenu.setAnimationStyle(android.R.anim.fade_in);
			ColorDrawable mColorDrawable = new ColorDrawable(-00000);
			floatPopupMenu.setBackgroundDrawable(mColorDrawable);
			floatPopupMenu.showAsDropDown(floatView);
		}else{
			floatPopupMenu.showAsDropDown(floatView);
		}
	}