安卓笔记之单选框实例

package com.qianfeng.singledialog;

import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.view.Menu;
import android.widget.Toast;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //拿到一个AlertDialog.Builder对象
        AlertDialog.Builder builder = new Builder(this);
        //设置对话框标题
        builder.setTitle("单选对话框");
        final String[] items = new String[]{
            "男","女"    
        };
        //第一个参数就是内容items,第二个-1是表示不默认选中,第三个就是一个监听机制
        builder.setSingleChoiceItems(items, -1, new OnClickListener() {
            
            @Override
            public void onClick(DialogInterface dialog, int which) {
            //用吐司对话框显示你选的内容
            Toast.makeText(MainActivity.this, "你选择的是"+items[which], 0).show();    
            //选中之后对话框应该消失
            dialog.dismiss();
            }
        });
        //把对话框show一下
        builder.show();
    }
}