Android对话框（一）AlertDialog

本文主要是介绍Android对话框（一）AlertDialog，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

最近在做项目，小组几个回了家。界面暂时没人做，用到自定义对话框只能临时去学。现在把对话框的相关整理。

<RelativeLayout 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"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"tools:context="com.example.alertdialog.MainActivity" ><Buttonandroid:id="@+id/button1"android:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_alignParentTop="true"android:layout_centerHorizontal="true"android:text="显示AlertDialog对话框" /><Buttonandroid:id="@+id/button2"android:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_below="@+id/button1"android:text="显示列表对话框" /><Buttonandroid:id="@+id/button3"android:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_below="@+id/button2"android:text="显示单选列表对话框" /><Buttonandroid:id="@+id/button4"android:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_below="@+id/button3"android:text="显示多选对话框" /><Buttonandroid:id="@+id/button5"android:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_below="@+id/button4"android:layout_centerHorizontal="true"android:text="调用资源文件多选对话框" /></RelativeLayout>

package com.example.alertdialog;import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.view.View.OnClickListener;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;public class MainActivity extends Activity {private Button button1;private Button button2;private final CharSequence[] items = {"广州","深圳","上海","北京"}; private Button button3;private Button button4;private Button button5;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);button1 = (Button) findViewById(R.id.button1);button2 = (Button) findViewById(R.id.button2);button3 = (Button) findViewById(R.id.button3);button4 = (Button) findViewById(R.id.button4);button5 = (Button) findViewById(R.id.button5);button1.setOnClickListener(new OnClickListener() {public void onClick(View view) {AlertDialog.Builder  builder = new AlertDialog.Builder(MainActivity.this);builder.setTitle("提示");builder.setMessage("你确定要删除吗!");builder.setIcon(R.drawable.ic_launcher);builder.setPositiveButton("确定", new  DialogInterface.OnClickListener() {public void onClick(DialogInterface dialog, int arg1) {// 让对话框消失dialog.dismiss();}});builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {public void onClick(DialogInterface arg0, int arg1) {// TODO Auto-generated method stub}});builder.setNeutralButton("忽略", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface arg0, int arg1) {// TODO Auto-generated method stub//忽略用户操作，作用和取消一样}});AlertDialog alertDialog = builder.create();alertDialog.show();}});button2.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {// TODO Auto-generated method stubAlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);builder.setTitle("提示");//不能设置setMessage的内容，不然会覆盖原来item的值//在OnClickListener前要加DialogInterface，不然会报错builder.setItems(items, new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface arg0, int index) {//item[index]不能转化为String,转化为CharSequence就行了CharSequence select_item = items[index];Toast.makeText(MainActivity.this, "你选择了城市"+select_item, 1).show();}});AlertDialog alertDialog = builder.create();alertDialog.show();}});button3.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {// TODO Auto-generated method stubAlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);builder.setTitle("请选择以下城市");builder.setIcon(R.drawable.ic_launcher);/** 第一个参数：显示在对话框中供选择列表* 第二个参数：默认选择的值，-1表示一个都没选* 第三个参数：监听器*/builder.setSingleChoiceItems(items, -1, new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stubCharSequence select_item = items[which];Toast.makeText(MainActivity.this, "-->>"+select_item, 1).show();dialog.dismiss();}});AlertDialog alertDialog = builder.create();alertDialog.show();}});button4.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);builder.setTitle("请选择以下城市");/** 第一个参数：供选择多选列表* 第二个参数：boolean类型的数组，表示选中的项;如设置为null,表示没有选项默认被选中* 第三个参数：不用说，监听器*/builder.setMultiChoiceItems(items, new boolean[]{false,false,true,false}, new DialogInterface.OnMultiChoiceClickListener() {@Overridepublic void onClick(DialogInterface arg0, int arg1, boolean ischecked) {// TODO Auto-generated method stub}});builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface arg0, int arg1) {// 直接获取选择的值}});AlertDialog alertDialog = builder.create();alertDialog.show();}});//其实是button4的另一种写法button5.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);builder.setTitle("请选择以下城市");//获取选择值:使用StringBuffer追加，中间用逗号分隔开来builder.setMultiChoiceItems(R.array.city,  new boolean[]{false,false,true,false}, new DialogInterface.OnMultiChoiceClickListener() {public void onClick(DialogInterface arg0, int arg1, boolean arg2) {// TODO Auto-generated method stub}});builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {public void onClick(DialogInterface arg0, int arg1) {// 获取选择的值}});AlertDialog alertDialog = builder.create();alertDialog.show();}});}
}