android实现ListView中添加RaidoButton单选

import Android.app.Activity;
import Android.view.LayoutInflater;
import Android.view.View;
import Android.view.ViewGroup;
import Android.widget.BaseAdapter;
import Android.widget.CompoundButton;
import Android.widget.CompoundButton.OnCheckedChangeListener;
import Android.widget.ImageView;
import Android.widget.RadioButton;
import Android.widget.TextView;
public class RecoverListAdapter extends BaseAdapter {
private LayoutInflater inflater;
int[] backup_record_item_image;
String[] backup_record_item_time;
String[] backup_record_item_to;
Activity activity;
private int temp = -1;
public RecoverListAdapter(Activity context, int[] backup_record_item_image,
String[] backup_record_item_time, String[] backup_record_item_to) {
this.inflater = LayoutInflater.from(context);
this.backup_record_item_image = backup_record_item_image;
this.backup_record_item_time = backup_record_item_time;
this.backup_record_item_to = backup_record_item_to;
this.activity = context;
}
@Override
public int getCount() {
return backup_record_item_time.length;
}
@Override
public Object getItem(int position) {
return position;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if (convertView == null) {
holder = new ViewHolder();
convertView = this.inflater.inflate(R.layout.general_recover_list_item, null);
holder.iv = (ImageView) convertView.findViewById(R.id.backup_record_item_image);
holder.tv_time = (TextView) convertView.findViewById(R.id.backup_record_item_time);
holder.tv_to = (TextView) convertView.findViewById(R.id.backup_record_item_to);
holder.radioButton = (RadioButton) convertView
.findViewById(R.id.backup_record_item_btn);
holder.radioButton.setChecked(false);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.iv.setImageResource(backup_record_item_image[position]);
holder.tv_time.setText(backup_record_item_time[position]);
holder.tv_to.setText(backup_record_item_to[position]);
//黑体部分为实现单选功能部分
holder.radioButton.setId(position);
holder.radioButton.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {

if (isChecked) {
if (temp != -1) {
RadioButton tempButton = (RadioButton) activity.findViewById(temp);
if (tempButton != null) {
tempButton.setChecked(false);
}
}
temp = buttonView.getId();
}
}
});
if (position == temp) {
holder.radioButton.setChecked(true);
} else {
holder.radioButton.setChecked(false);
}
return convertView;
}
private class ViewHolder {
ImageView iv;
TextView tv_time;
TextView tv_to;
RadioButton radioButton;
}
}

general_recover_list_item.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:Android="http://schemas.Android.com/apk/res/Android"
Android:layout_width="wrap_content"
Android:layout_height="fill_parent">
<RelativeLayout
Android:layout_width="wrap_content"
Android:layout_height="wrap_content"
Android:paddingLeft="5dip"
Android:paddingRight="5dip"
Android:id="@+id/backup_record_item">
<ImageView
Android:layout_height="wrap_content"
Android:layout_width="wrap_content"
Androidrc="@drawable/icon"
Android:layout_alignParentLeft="true"
Android:id="@+id/backup_record_item_image"/>

<LinearLayout
Android:layout_height="wrap_content"
Android:layout_width="wrap_content"
Android:orientation="vertical"
Android:layout_toRightOf="@+id/backup_record_item_image"
Android:id="@+id/backup_record_item_txt">
<TextView
Android:layout_height="wrap_content"
Android:layout_width="wrap_content"
Android:text="时间"
Android:layout_alignTop="@+id/imageView1"
Android:layout_alignBottom="@+id/imageView1"
Android:id="@+id/backup_record_item_time"/>
<TextView
Android:layout_height="wrap_content"
Android:layout_width="wrap_content"
Android:text="备份联系人 到 "
Android:layout_toRightOf="@+id/imageView1"
Android:layout_alignTop="@+id/imageView1"/>
<TextView
Android:layout_height="wrap_content"
Android:layout_width="wrap_content"
Android:text="手机/存储卡"
Android:layout_toRightOf="@+id/imageView1"
Android:layout_alignTop="@+id/imageView1"
Android:id="@+id/backup_record_item_to" />
</LinearLayout>
<RadioButton
Android:layout_height="wrap_content"
Android:layout_width="wrap_content"
Android:layout_alignParentRight="true"
Android:id="@+id/backup_record_item_btn" />
<CheckBox
Android:layout_width="wrap_content"
Android:layout_height="wrap_content"
Android:visibility="gone"
Android:text=""
Android:id="@+id/backup_record_item_check" />
</RelativeLayout>
</LinearLayout>
main.xml
<LinearLayout
Android:layout_width="fill_parent"
Android:layout_height="fill_parent"
Android:orientation="vertical"
Android:id="@+id/recover_items">
<ListView
Android:id="@+id/recover_list"
Android:cacheColorHint="#00000000"
Android:layout_height="match_parent"
Android:layout_width="fill_parent"/>
<View
Android:id="@+id/recover_footer"
Android:layout_width="fill_parent"
Android:layout_height="40dip" />
</LinearLayout>