Android 之 Dialog复选框获取值

package com.ethan.dialog;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.DialogInterface.OnMultiChoiceClickListener;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;


public class TestDialogActivity extends Activity {
private Button btn;

final Context context = this;   
    @Override
    public void onCreate(Bundle savedInstanceState) { 
        super.onCreate(savedInstanceState); 
        setContentView(R.layout.main); 

        btn = (Button) findViewById(R.id.Button01); 

        btn.setOnClickListener(new View.OnClickListener() { 
@Override
public void onClick(View v) { 
showDialog5(); 
} 
        }); 
    } 
    public void showDialog5(){   
        //定义复选框选项   
        final String[] multiChoiceItems = {"Item1","Item2"};   
      //复选框默认值：false=未选;true=选中 ,各自对应items[i] 
        final boolean[] defaultSelectedStatus = {false,false}; 

        final StringBuilder sb = new StringBuilder(); 
        //创建对话框   
        new AlertDialog.Builder(context)   
        .setTitle("复选框")//设置对话框标题   
        .setMultiChoiceItems(multiChoiceItems, defaultSelectedStatus, new OnMultiChoiceClickListener(){   
            @Override  
            public void onClick(DialogInterface dialog, int which,   
                    boolean isChecked) {   
            //来回重复选择取消，得相应去改变item对应的bool值，点击确定时，根据这个bool[],得到选择的内容  
            defaultSelectedStatus[which] = isChecked; 
            }   
        })  //设置对话框[肯定]按钮   
        .setPositiveButton("确定",new DialogInterface.OnClickListener() { 
@Override
public void onClick(DialogInterface dialog, int which) { 
for(int i=0;i<defaultSelectedStatus.length;i++) { 
if(defaultSelectedStatus[i]) { 
sb.append(multiChoiceItems[i]); 
} 
} 
// TODO Auto-generated method stub 
Toast.makeText(context,sb.toString(), Toast.LENGTH_LONG).show();   
} 
}) 
        .setNegativeButton("取消", null)//设置对话框[否定]按钮   
        .show();   
    }   
}