使用AlertDialog创建单选列表对话框

Main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    tools:context=".MainActivity" 

    android:orientation="vertical">

    <Button android:id="@+id/mybut"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="弹出单选对话框"

        android:layout_gravity="center_horizontal"/>

    

    <TextView

        android:id="@+id/textView"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="Hello World"

        android:layout_gravity="center_horizontal"/>

</LinearLayout>

Main.java

package com.example.singlechoicedialog;

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.graphics.Color;

import android.view.Menu;

import android.view.View;

import android.widget.Button;

import android.widget.TextView;

public class MainActivity extends Activity {

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

//获取我们的按钮，文本
Button but=(Button) super.findViewById(R.id.mybut);
final TextView textView=(TextView) super.findViewById(R.id.textView);
final Builder b=new AlertDialog.Builder(this);

//为按钮绑定点击事件
but.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {
b.setIcon(R.drawable.ic_launcher);
b.setTitle("单选列表对话框");
b.setNegativeButton("确定", null);
b.setSingleChoiceItems(new String[]{
"红色","绿色","蓝色"
}, 0, new OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
switch(which){
case 0:
textView.setBackgroundColor(Color.RED);
break;
case 1:
textView.setBackgroundColor(Color.GREEN);
break;
case 2:
textView.setBackgroundColor(Color.BLUE);
break;
}
}
});
b.create().show();
}
});
}

}