ListView+radioButton实现每行单选

<ListView
android:id="@+id/listView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true" >
</ListView>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >

<RelativeLayout
android:id="@+id/outpatient_check_hospital"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="5.0dip"
android:layout_marginLeft="12.599976dip"
android:layout_marginRight="12.599976dip"
android:layout_marginTop="5.0dip"
android:gravity="center_vertical"
android:background="#AAAAAA">

<LinearLayout
android:id="@+id/linear_layout_up"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_margin="10.0dip"
android:gravity="center"
android:orientation="horizontal" >

<ImageView
android:layout_width="10dip"
android:layout_height="10dip"
android:adjustViewBounds="false" />

<TextView
android:id="@+id/tv_device_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="2.0"
android:text="名称"
android:textColor="#ff323232"
android:textSize="16.0sp"
android:typeface="monospace" />

<RadioButton
android:id="@+id/rb_light"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:focusable="false"
android:text="" />

</LinearLayout>
</RelativeLayout>

</LinearLayout>

public class MainActivity extends Activity {
private ListView listView;
private ListViewAdapter adapter;
private String[] beans = new String[] { "1", "2", "3", "4", "5", "6", "7",
"8", "9", "10", "11", "12", "13" };

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

initView();

}

private void initView() {
// TODO Auto-generated method stub
Log.i("htp", "beans.size:" + beans.length);
listView = (ListView) findViewById(R.id.listView1);
adapter = new ListViewAdapter(MainActivity.this, beans);
listView.setAdapter(adapter);
listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
}

package com.example.listviewdemo;

import java.util.HashMap;
import java.util.List;

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.LinearLayout;
import android.widget.RadioButton;
import android.widget.TextView;

public class ListViewAdapter extends BaseAdapter {

private Context context;
private String[] beans;
// 用于记录每个RadioButton的状态，并保证只可选一个
HashMap<String, Boolean> states = new HashMap<String, Boolean>();

class ViewHolder {

TextView tvName;
RadioButton rb_state;
}

public ListViewAdapter(Context context, String[] beans) {
// TODO Auto-generated constructor stub
this.beans = beans;
this.context = context;
}

@Override
public int getCount() {
// TODO Auto-generated method stub
return beans.length;
}

@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return beans[position];
}

@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}

@Override
public View getView(final int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
// 页面
ViewHolder holder;
String bean = beans[position];
LayoutInflater inflater = LayoutInflater.from(context);
if (convertView == null) {
convertView = inflater.inflate(
R.layout.assist_device_binding_list_item, null);
holder = new ViewHolder();
//			holder.rb_state = (RadioButton) convertView
//					.findViewById(R.id.rb_light);
holder.tvName = (TextView) convertView
.findViewById(R.id.tv_device_name);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}

holder.tvName.setText(bean);
final RadioButton radio=(RadioButton) convertView.findViewById(R.id.rb_light);
holder.rb_state = radio;
holder.rb_state.setOnClickListener(new View.OnClickListener() {

public void onClick(View v) {

// 重置，确保最多只有一项被选中
for (String key : states.keySet()) {
states.put(key, false);

}
states.put(String.valueOf(position), radio.isChecked());
ListViewAdapter.this.notifyDataSetChanged();
}
});

boolean res = false;
if (states.get(String.valueOf(position)) == null
|| states.get(String.valueOf(position)) == false) {
res = false;
states.put(String.valueOf(position), false);
} else
res = true;

holder.rb_state.setChecked(res);
return convertView;
}
}