android 自定义ListView实现单选

package com.zhangbw.adapter; import java.util.ArrayList; import java.util.List; import java.util.Map; import android.content.Context; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.ImageView; import android.widget.TextView; import com.zhangbw.R; public class MyListAdapter extends BaseAdapter { @Override public void notifyDataSetChanged() { super.notifyDataSetChanged(); } private LayoutInflater inflater; List<Map<String, Object>> list ; Context c; int currentID=0; public MyListAdapter(Context context,List<Map<String, Object>> list2) { inflater=LayoutInflater.from(context); this.c=context; this.list=list2; } public void setList(ArrayList<Map<String, Object>> list) { this.list = list; } @Override public int getCount() { return list.size(); } @Override public Object getItem(int position) { return list.get(position); } @Override public long getItemId(int position) { return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { Holder myHolder; if (convertView==null) { myHolder=new Holder(); convertView=inflater.inflate(R.layout.c_list_single, null); myHolder.tv1=(TextView)convertView.findViewById(R.id.title); myHolder.tv2=(TextView)convertView.findViewById(R.id.info); myHolder.iv=(ImageView)convertView.findViewById(R.id.img); convertView.setTag(myHolder); } else { myHolder=(Holder)convertView.getTag(); } //myHolder.iv.setBackgroundResource((Integer) list.get(position).get("img")); if(position==this.currentID) myHolder.iv.setBackgroundDrawable(c.getResources().getDrawable(R.drawable.radio_clk)); else myHolder.iv.setBackgroundDrawable(c.getResources().getDrawable(R.drawable.radio)); myHolder.tv1.setText(list.get(position).get("title").toString()); myHolder.tv2.setText(list.get(position).get("info").toString()); return convertView; } class Holder{ ImageView iv; TextView tv1; TextView tv2; } public void setCurrentID(int currentID) { this.currentID = currentID; } }