ListView+radioButton实现每行单选

有时候我们需要制作自定义的单选列表，但是会遇到一些问题，比如多选，假选问题，所以网上找了找资料，整理一个demo出来，贴一下代码:

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

列表中每行的内容

<?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" ><RelativeLayoutandroid: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"><LinearLayoutandroid: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" ><ImageViewandroid:layout_width="10dip"android:layout_height="10dip"android:adjustViewBounds="false" /><TextViewandroid: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" /><RadioButtonandroid:id="@+id/rb_light"android:layout_width="wrap_content"android:layout_height="wrap_content"android:focusable="false"android:text="" /></LinearLayout></RelativeLayout></LinearLayout>

使用列表的页面

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" };@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);initView();}private void initView() {// TODO Auto-generated method stubLog.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);}

适配器内容,在这里面处理如何单选问题

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 stubthis.beans = beans;this.context = context;}@Overridepublic int getCount() {// TODO Auto-generated method stubreturn beans.length;}@Overridepublic Object getItem(int position) {// TODO Auto-generated method stubreturn beans[position];}@Overridepublic long getItemId(int position) {// TODO Auto-generated method stubreturn position;}@Overridepublic 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);} elseres = true;holder.rb_state.setChecked(res);return convertView;}}