android弹出窗口实现

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/**      * popWindow(下拉列表弹出)      * @Title: popWindow      * @param     设定文件      * @return void    返回类型      */        private void popWindow()    {                int intMobilePhoneWidth = WindowSizeUtil.getWidth(mContext);        int intMobilePhoneHeight = WindowSizeUtil.getHeight(mContext);                int popWidth = (int) (intMobilePhoneWidth / 4); //6.40        int popHeight = (int) (intMobilePhoneHeight / 7);//5.80  //15.4                LayoutInflater flater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);        popWindowView = flater.inflate(R.layout.common_listview, null);        popWindowView.setBackgroundColor(Color.GRAY);        popWindowView.setAlpha(255);// 0~255透明度值                        lv_popup = (ListView) popWindowView.findViewById(R.id.lv_common);                ArrayList<HashMap<String, String>> list = new ArrayList<HashMap<String,String>>();        HashMap<String, String > obj =new HashMap<String, String>();        obj.put("id","jubao");        obj.put("name", "举报");        list.add(obj );                HashMap<String, String > obj1 =new HashMap<String, String>();        obj1.put("id","fuzhi");        obj1.put("name", "复制链接");        list.add(obj1 );                NgPopWindowAdapter adapter = new NgPopWindowAdapter(mContext, list);        lv_popup.setAdapter(adapter);                popwindow = new PopupWindow(popWindowView,popWidth,popHeight);        popwindow.showAsDropDown(btn_jubao);        // 使其聚集        popwindow.setFocusable(true);        // 设置允许在外点击消失        popwindow.setOutsideTouchable(true);        // 这个是为了点击“返回Back”也能使其消失，并且并不会影响你的背景        popwindow.setBackgroundDrawable(new BitmapDrawable());                        lv_popup.setOnItemClickListener(new OnItemClickListener() {            @Override            public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,                    long arg3) {                // TODO Auto-generated method stub                                                Intent intent = new Intent(mContext, ReportActivity.class);                                if(nGArticleBean!=null){                    intent.putExtra(ProjectConstant.INTENT_EXTRA_FRIEND_UCODE, nGArticleBean.getUserCode());                }                mContext.startActivity(intent);                            }                    });            }
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