Android PopupWindow 的使用

<pre name="code" class="java">  /**
     * 彈出選擇頭像框
     */
    public void showPop(View parent) {
        /*
         * if (mPop != null) { int[] location = new int[2];
         * parent.getLocationOnScreen(location); mPop.showAtLocation(parent,
         * Gravity.NO_GRAVITY, location[0]+25, location[1] +
         * parent.getHeight()+5); } else {
         */
        LayoutInflater inflater = LayoutInflater.from(this);
        // 引入窗口配置文件
        View view = inflater.inflate(R.layout.uet_dialog_leave_info_select, null);
         //

          這裏插入你自己要的佈局界面
        mPop = new PopupWindow(view, LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, false);
        // 需要設置一下此參數，點擊外邊可消失 
        mPop.setBackgroundDrawable(getResources().getDrawable(R.drawable.uet_contact_head_dialog_bg));
        // 設置點擊窗口外邊窗口消失 
        mPop.setOutsideTouchable(true);
        // 設置此參數獲得焦點，否則無法點擊 
        mPop.setFocusable(true);
        // mPop.showAsDropDown(parent);
        int[] location = new int[2];
        //parent.getLocationOnScreen(location);
        //mPop.showAtLocation(parent, Gravity.NO_GRAVITY, parent.getWidth() + 30, location[1] + parent.getHeight() + 7);
        mPop.showAsDropDown(parent, (parent.getLayoutParams().width)-409, 8);
        // }
    }