hyljava

一，Layout

1，main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<TextView  
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="@string/hello"
    />
    <ListView
       android:id="@+id/list"
       android:layout_width="fill_parent"
       android:layout_height="fill_parent"
       />
</LinearLayout>

2，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="wrap_content">
  <Button
    android:id="@+id/button"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="测试">
  
  </Button>
  
  <CheckBox
    android:id="@+id/checkBox"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    />  
 
</LinearLayout>

二，Activity

1，MainActivity

package com.excetop.listradio;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.ListView;
import android.widget.Toast;
import android.widget.CompoundButton.OnCheckedChangeListener;

public class MainActivity extends Activity {
 private static final String TAG = "MainActivity";
    private ListView listView;
    private Map checkMap;
 @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        listView = (ListView) this.findViewById(R.id.list);
        
        checkMap = new HashMap<String, Object>();
        
        MyAdapter adapter = new MyAdapter();
        listView.setAdapter(adapter);
      
    }
 private class MyAdapter extends BaseAdapter{
  private String[] s = new String[]{"a","b","c","d","e","a","b","c","d","e","a","b","c","d","e","a","b","c","d","e"};

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

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

  @Override
  public long getItemId(int position) {
   // TODO Auto-generated method stub
   return 0;
  }

  @Override
  public View getView(int position, View convertView, ViewGroup parent) {
   convertView = MainActivity.this.getLayoutInflater().inflate(R.layout.item, null);  //解决办法： 每次都重新获取View
   Button button = (Button) convertView.findViewById(R.id.button);
   button.setText(s[position]);
   final CheckBox checkBox =  (CheckBox) convertView.findViewById(R.id.checkBox);
   checkBox.setId(position);  //把position设为radioButton的id
   checkBox.setOnCheckedChangeListener(new OnCheckedChangeListener() {
    
    @Override
    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
     
     if(isChecked){
      
      checkMap.put(String.valueOf(checkBox.getId()), checkBox.getId());
//      Toast.makeText(MainActivity.this, String.valueOf( checkBox.getId()), 0).show();
     
     }else{
      checkMap.remove(String.valueOf(checkBox.getId()));
//      Toast.makeText(MainActivity.this, String.valueOf( checkBox.getId()), 0).show();
     }
    }
   });
   
   if(checkMap.get(String.valueOf(position)) != null){
    checkBox.setChecked(true);
//    Toast.makeText(MainActivity.this, String.valueOf(String.valueOf(position)), 0).show();
   }
   
   //这里实现单选框选的回显，解决了单选框移出屏幕范围未选中状态
   return convertView;
  }
 }
}