Android使用AlertDialog实现对话框

示例：

一、确定对话框

alertdialog.builder builder = new alertdialog.builder(this);
   builder.settitle("确认对话框");
   builder.seticon(r.drawable.icon_72);
   builder.setmessage("这里是对话框内容");
   builder.setpositivebutton("确定", new dialoginterface.onclicklistener() {
    @override
    public void onclick(dialoginterface arg0, int arg1) {
     // todo auto-generated method stub
     toast.maketext(alertdialog_text.this, "点击了确定按钮", 1).show();
    }
   });
   alertdialog dialog = builder.create();
   dialog.show(); //显示、

二、普通列表

final string[] items = new string[]{"语文","数学","英语","物理","化学"}; //列表项
   builder alertdialog = new alertdialog.builder(this); 
   alertdialog.settitle("你喜欢的课程").setitems(items, new dialoginterface.onclicklistener() {
    @override
    public void onclick(dialoginterface dialog, int which) {
     // todo auto-generated method stub
     toast.maketext(alertdialog_lianxi.this, items[which], toast.length_short).show();
    }
   });
   alertdialog.create().show();     //创建显示列表

三、单选列表

final string[] items_fruit = new string[]{"苹果","香蕉","橘子","西瓜","梨"};
   builder alerdialog = new alertdialog.builder(this);
   //设置列表标题
   alerdialog.settitle("你喜欢的水果");
   //设置单选列表
   alerdialog.setsinglechoiceitems(items_fruit, 0, new dialoginterface.onclicklistener() {
    @override
    public void onclick(dialoginterface dialog, int which) {
     // todo auto-generated method stub
     toast.maketext(alertdialog_lianxi.this, items_fruit[which], toast.length_short).show();
    }
   });
   //设置取消按钮并且设置响应事件
   alerdialog.setnegativebutton("取消", new dialoginterface.onclicklistener() {
    @override
    public void onclick(dialoginterface dialog, int which) {
     // todo auto-generated method stub
     //取消按钮响应事件
    }
   });
   //添加确定按钮 并且设置响应事件
   alerdialog.setpositivebutton("确定", new dialoginterface.onclicklistener() {  
    @override
    public void onclick(dialoginterface dialog, int which) {
     // todo auto-generated method stub
     //确定按钮响应事件
    }
   });
   alerdialog.create().show();//创建显示列表

四、多选列表

final string[] items_fruit1 = new string[]{"苹果","香蕉","橘子","西瓜","梨"}; //设置项
   final boolean[] items_fruit_selected = new boolean[]{true,false,false,false,false}; 
   builder alerdialog1 = new alertdialog.builder(this);
   //设置列表标题
   alerdialog1.settitle("你喜欢的水果");
   //设置多选列表
   alerdialog1.setmultichoiceitems(items_fruit1, items_fruit_selected, new dialoginterface.onmultichoiceclicklistener() {
    @override
    public void onclick(dialoginterface dialog, int which, boolean ischecked) {
     // todo auto-generated method stub
     items_fruit_selected[which] = ischecked;
    }
   });
   //设置取消按钮并且设置响应事件
   alerdialog1.setnegativebutton("取消", new dialoginterface.onclicklistener() {
    @override
    public void onclick(dialoginterface dialog, int which) {
     // todo auto-generated method stub
     //取消按钮响应事件
    }
   });
   //添加确定按钮 并且设置响应事件,将选择的项显示
   alerdialog1.setpositivebutton("确定", new dialoginterface.onclicklistener() {  
    @override
    public void onclick(dialoginterface dialog, int which) {
     // todo auto-generated method stub
     //确定按钮响应事件
     stringbuilder stringbuilder = new stringbuilder();
     for(int i=0;i<items_fruit_selected.length;i++)
     {
      if(items_fruit_selected[i] == true)
      {
       stringbuilder.append(items_fruit1[i]+"、");
      }
     }
     toast.maketext(alertdialog_lianxi.this, stringbuilder.tostring(), toast.length_short).show();
    }
   });
   alerdialog1.create().show();//创建显示列表

5、自定义布局对话框

对话框布局文件

<?xml version="1.0" encoding="utf-8"?>
<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:gravity="center_horizontal"
 android:orientation="vertical" >
 <edittext 
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:editable="false"
  android:text="自定义对话框"/>
 <textview 
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:text="这里是自定义对话框的内容"
  android:textsize="20dp"
  />
 <button 
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:text="确定"
  />
</linearlayout>

layout_dialog

package com.example.demo1;
import android.app.activity;
import android.app.alertdialog;
import android.content.dialoginterface;
import android.os.bundle;
import android.view.layoutinflater;
import android.view.view;
import android.view.view.onclicklistener;
import android.widget.button;
public class mainactivity extends activity {
 private button btn_opendialog;
 private view view;
 @override
 protected void oncreate(bundle savedinstancestate) {
  super.oncreate(savedinstancestate);
  setcontentview(r.layout.activity_main);
  btn_opendialog = (button) findviewbyid(r.id.id_submit);
  btn_opendialog.setonclicklistener(new onclicklistener() {
   @override
   public void onclick(view v) {
    // todo auto-generated method stub
    view = layoutinflater.from(mainactivity.this).inflate(r.layout.layout_dialog, null);
    alertdialog dialog = new alertdialog.builder(mainactivity.this)
          .settitle("主题")
          .seticon(r.drawable.ic_launcher)
          .setview(view)
          .setpositivebutton("取消", new dialoginterface.onclicklistener() {
          @override
          public void onclick(dialoginterface dialog, int which) {
           // todo auto-generated method stub
          }
         })
          .create();
    dialog.show();
   }
  });
 }
}

mainactivity.class

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