android ListView+CheckBox实现单选

package com.example.singlechoose;

import java.util.ArrayList;

import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.ListView;
import android.widget.TextView;

public class MainActivity extends Activity {

private ListView listview;
private MyAdapter myAdapter;
private ArrayList list = new ArrayList() { // listView的内容
{
add("item1");
add("item2");
add("item3");
add("item4");
add("item5");
add("item6");
add("item7");
add("item8");
add("item9");
add("item10");
}
};

private ArrayList checkList = new ArrayList(); // 判断listview单选位置

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

//设置选中的位置，将其他位置设置为未选
public void checkPosition(int position) {
for (int i = 0; i < checkList.size(); i++) {
if (position == i) {// 设置已选位置
checkList.set(i, true);
} else {
checkList.set(i, false);
}
}
myAdapter.notifyDataSetChanged();
}

public void init() {
listview = (ListView) findViewById(R.id.lsitview);
for (int i = 0; i < list.size(); i++) {
checkList.add(false); // 均为未选
}
myAdapter = new MyAdapter(MainActivity.this, list);
listview.setAdapter(myAdapter);
}

//自定义adapter
private class MyAdapter extends BaseAdapter {
private LayoutInflater inflater;
ArrayList myList;

public MyAdapter(Context context, ArrayList myList) {
this.inflater = LayoutInflater.from(context);
this.myList = myList;
}

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

@Override
public Object getItem(int arg0) {
// TODO Auto-generated method stub
return null;
}

@Override
public long getItemId(int arg0) {
// TODO Auto-generated method stub
return 0;
}

@Override
public View getView(final int position, View convertView,
ViewGroup parent) {
Log.i("aaa", "getview");
ViewHolder holder = null;
if (convertView == null) {
convertView = inflater.inflate(R.layout.layout_item, null);
holder = new ViewHolder();
holder.txt = (TextView) convertView.findViewById(R.id.txt);
holder.checkBox = (CheckBox) convertView
.findViewById(R.id.checkBox);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.txt.setText(myList.get(position));
holder.checkBox.setChecked(checkList.get(position));
holder.checkBox
.setOnCheckedChangeListener(new OnCheckedChangeListener() {//单击checkbox实现单选，根据状态变换进行单选设置

@Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
// TODO Auto-generated method stub
if (isChecked) {
checkPosition(position);
} else {
checkList.set(position, false);//将已选择的位置设为选择
}
}
});
convertView.setOnClickListener(new OnClickListener() {//item单击进行单选设置

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
checkPosition(position);
}
});

return convertView;
}

public final class ViewHolder {
public TextView txt;
public CheckBox checkBox;
}
}

}