public class MyAdapter extends BaseAdapter {LayoutInflater inflater = null;Activity activity;ArrayList<News> newslist;private PopupWindow popupWindow;public MyAdapter(Activity activity, ArrayList<News> newslist) {this.activity = activity;this.newslist = newslist;inflater = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);initPopWindow();}@Overridepublic int getCount() {return newslist != null ? newslist.size() : 0;}@Overridepublic News getItem(int position) {if (newslist != null && newslist.size() != 0) {return newslist.get(position);}return null;}@Overridepublic long getItemId(int position) {return position;}@Overridepublic View getView(final int position, View convertView, ViewGroup parent) {View vi = convertView;final ViewHolder holder;if (vi == null) {vi = inflater.inflate(R.layout.listview_item, null);holder = new ViewHolder();holder.item_title = (TextView) vi.findViewById(R.id.item_title);holder.item_content = (TextView) vi.findViewById(R.id.item_content);holder.button_showpop = (ImageView) vi.findViewById(R.id.button_showpop);vi.setTag(holder);} else {holder = (ViewHolder) vi.getTag();}News news = getItem(position);holder.item_title.setText(news.getTitle());holder.item_content.setText(news.getContent());holder.button_showpop .setOnClickListener(new popAction(position));return vi;}public class ViewHolder {TextView item_title;TextView item_content;ImageView button_showpop;}/** * 初始化popWindow* */private void initPopWindow() {View popView = inflater.inflate(R.layout.listview_pop, null);popupWindow = new PopupWindow(popView, LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);popupWindow.setBackgroundDrawable(new ColorDrawable(0));//设置popwindow出现和消失动画
        popupWindow.setAnimationStyle(R.style.PopMenuAnimation);btn_pop_close = (ImageView) popView.findViewById(R.id.btn_pop_close);}/** popWindow 关闭按钮 */private ImageView btn_pop_close;/** * 显示popWindow* */public void showPop(View parent, int x, int y,int postion) {//设置popwindow显示位置popupWindow.showAtLocation(parent, 0, x, y);//获取popwindow焦点popupWindow.setFocusable(true);//设置popwindow如果点击外面区域，便关闭。popupWindow.setOutsideTouchable(true);popupWindow.update();if (popupWindow.isShowing()) {}btn_pop_close.setOnClickListener(new OnClickListener() {public void onClick(View paramView) {popupWindow.dismiss();}});}/** * 每个ITEM中more按钮对应的点击动作* */public class popAction implements OnClickListener{int position;public popAction(int position){this.position = position;}@Overridepublic void onClick(View v) {int[] arrayOfInt = new int[2];//获取点击按钮的坐标
            v.getLocationOnScreen(arrayOfInt);int x = arrayOfInt[0];int y = arrayOfInt[1];showPop(v, x , y, position);}}
}