android 带CheckBox对话框

package com.example.dialog4;

import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends Activity {

final String[] Fruit = new String[] {"苹果", "橘子", "草莓", "香蕉"};

final boolean[] FruitsSelected = new boolean[] {true, true, false, false};

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button btn = (Button)findViewById(R.id.button1);
btn.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Dialog myDialog= new AlertDialog.Builder(MainActivity.this)
.setTitle("标题")
.setIcon(R.drawable.ic_launcher)
.setMultiChoiceItems(Fruit, FruitsSelected, new DialogInterface.OnMultiChoiceClickListener() {

@Override
public void onClick(DialogInterface dialog, int which, boolean isChecked) {
// TODO Auto-generated method stub
Toast.makeText(MainActivity.this, Fruit[which]+(isChecked?"勾选":"取消"), Toast.LENGTH_SHORT).show();

}
})
.setPositiveButton("确定", new DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub

}
})
.create();
myDialog.show();

}
});

}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}

}