Listview点击已读使用getBadgeView标示

package com.yongway.school.adapter;

import android.content.Context;
import android.graphics.Color;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.TextView;

import com.readystatesoftware.viewbadger.BadgeView;
import com.yongway.school.R;
import com.yongway.school.entity.MainItemBean;

import java.util.List;


public class MainListItemAdapter extends BaseAdapter {
    private Context context;
    private List<MainItemBean> datas;
    private LayoutInflater inflater;

    public MainListItemAdapter(Context context, List<MainItemBean> datas) {
        this.context = context;
        this.datas=datas;
        inflater= LayoutInflater.from(context);
    }

    @Override
    public int getCount() {
        return datas.size();
    }

    @Override
    public Object getItem(int i) {
        return datas.get(i);
    }

    @Override
    public long getItemId(int i) {
        return i;
    }

    @Override
    public View getView(int i, View view, ViewGroup viewGroup) {
        ViewHolder holder = null;
        if(null == view){
            view = inflater.inflate(R.layout.list_item_main,viewGroup,false);
            holder = new ViewHolder();

            holder.layout = (RelativeLayout) view.findViewById(R.id.list_item_rel);
            holder.textViewTile = (TextView)view.findViewById(R.id.li_item_title);
            holder.textViewContent = (TextView)view.findViewById(R.id.li_item_content);
            holder.textViewTime = (TextView)view.findViewById(R.id.li_item_time);
            view.setTag(holder);
        }else{
            holder = (ViewHolder) view.getTag();
        }

        MainItemBean bean = datas.get(i);

        if(!bean.isRead()){
            if(null == bean.getBadgeView()){
                BadgeView badgeView = new BadgeView(context, holder.layout);
                badgeView.setText("New!");
                badgeView.setTextColor(Color.BLUE);
                badgeView.setBadgeBackgroundColor(Color.YELLOW);
                badgeView.setTextSize(10);
                bean.setBadgeView(badgeView);
                bean.getBadgeView().show();
            }
        }else{
            if(null != bean.getBadgeView()){
                if(bean.getBadgeView().isShown()){
                    bean.getBadgeView().hide();
                }
            }
        }

        holder.textViewTile.setText(bean.getTitle());
        holder.textViewContent.setText(bean.getContent());
        holder.textViewTime.setText(bean.getTime());

        return view;
    }

    private class ViewHolder{
        private RelativeLayout layout;
        private ImageView imageView;
        private TextView textViewTile;
        private TextView textViewContent;
        private TextView textViewFee;
        private TextView textViewTime;
        private TextView textViewPhone;
    }

    public List<MainItemBean> getDatas() {
        return datas;
    }

    public void setDatas(List<MainItemBean> datas) {
        this.datas = datas;
    }

}