View（视图）——对话框之单选对话框和复选对话框

package com.example.wang.testapp2;

import android.app.AlertDialog;
import android.content.DialogInterface;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Toast;

public class TestActivity5 extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_test5);

}

//复选对话框
public  void bt3_OnClick(View v)
{
final String[] str={"宝马","奔驰","劳斯莱斯","宾利"};
final boolean[] ch={true,false,false,true};

new AlertDialog.Builder(this)
.setTitle("复选对话框")
.setMultiChoiceItems(str, ch, new DialogInterface.OnMultiChoiceClickListener() {
@Override
public void onClick(DialogInterface dialog, int which, boolean isChecked) {

//改变对应数组项的选中状态
ch[which]=isChecked;
}
})
.setPositiveButton("确认", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {

int i=0;
//获取最终的选中状态
for (boolean b:ch)
{
Toast.makeText(TestActivity5.this, str[i]+"选中状态="+(b?"选中":"未选中"), Toast.LENGTH_SHORT).show();

i++;
}
}
})
.setNegativeButton("取消", null)
.setCancelable(false)
.show();
}

}