Android修行之路——Dialog

　　今天研究了一下Android的对话框，照着书上敲出来了一个简单的对话框。

DialogActivity.java:

1 package com.jin;
2
3 import android.app.Activity;
4 import android.app.AlertDialog;
5 import android.app.Dialog;
6 import android.app.ProgressDialog;
7 import android.content.DialogInterface;
8 import android.os.Bundle;
9 import android.view.LayoutInflater;
10 import android.view.View;
11
12 public class DialogActivity extends Activity {
13    
14     ProgressDialog m_Dialog;
15    
16     @Override
17     public void onCreate(Bundle savedInstanceState) {
18         super.onCreate(savedInstanceState);
19         setContentView(R.layout.main);
20        
21         Dialog dialog = new AlertDialog.Builder(DialogActivity.this)
22             .setTitle("登陆提示")//设置标题
23             .setMessage("这里需要登录！")//设置内容
24             .setPositiveButton("确定",//设置确定按钮
25                     new DialogInterface.OnClickListener(){
26                         public void onClick(DialogInterface dialog, int whichButton){
27                             //点击”确定“转向登陆框
28                             LayoutInflater factory = LayoutInflater.from(DialogActivity.this);
29                            
30                             //得到自定义对话框
31                             final View DialogView = factory.inflate(R.layout.dialog, null);
32                            
33                             //创建对话框
34                             AlertDialog dlg = new AlertDialog.Builder(DialogActivity.this)
35                                 .setTitle("登陆框")
36                                 .setView(DialogView)//设置自定义对话框的样式
37                                 .setPositiveButton("确定",//设置”确定“按钮
38                                         new DialogInterface.OnClickListener(){//设置事件监听
39                                             public void onClick(DialogInterface dialog, int whichButton){
40                                                 //输入完成后，点击”确定“开始登陆
41                                                 m_Dialog = ProgressDialog.show(DialogActivity.this, "请等待...", "正在为你登陆...", true);
42                                                
43                                                 new Thread(){
44                                                     public void run(){
45                                                         try{
46                                                             sleep(3000);
47                                                         }catch(Exception e){
48                                                             e.printStackTrace();
49                                                         }finally{
50                                                             //登陆结束，取消m_Dialog对话框
51                                                             m_Dialog.dismiss();
52                                                         }
53                                                     }
54                                                     }.start();
55                                                 }
56                                 }).setNegativeButton("取消",//设置”取消“按钮
57                                         new DialogInterface.OnClickListener(){
58                                             public void onClick(DialogInterface dialog, int whichButton){
59                                                 //点击”取消“按钮之后退出程序
60                                                 DialogActivity.this.finish();
61                                             }
62                                         }).create();//创建
63                                         dlg.show();//显示
64                         }
65                        
66             }).setNeutralButton("退出",
67                     new DialogInterface.OnClickListener(){
68                         public void onClick(DialogInterface dialog, int whichButton){
69                             //点击”退出“按钮之后退出程序
70                             DialogActivity.this.finish();
71                         }
72                     }).create();//创建按钮
73                     dialog.show();
74     }
75 }
然后是dialog.xml：

1 <?xml version="1.0" encoding="utf-8"?>
2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
3     android:layout_width="match_parent"
4     android:layout_height="match_parent"
5     android:orientation="vertical" >
6    
7     <TextView
8 android:id="@+id/username"
9         android:layout_height="wrap_content"
10         android:layout_width="wrap_content"
11         android:layout_marginLeft="20dip"
12         android:layout_marginRight="20dip"
13        
14         android:text="@string/username"
15        
16         android:gravity="left"
17         android:textAppearance="?android:attr/textAppearanceMedium" />
18    
19     <EditText
20 android:id="@+id/un"
21         android:layout_width="fill_parent"
22         android:layout_height="wrap_content"
23         android:layout_marginLeft="20dip"
24         android:layout_marginRight="20dip"
25         android:scrollHorizontally="true"
26         android:autoText="false"
27         android:hint="@string/unhint"
28         android:inputType="text"
29         android:capitalize="none"
30         android:gravity="fill_horizontal"
31         android:textAppearance="?android:attr/textAppearanceMedium" />
32    
33     <TextView
34 android:id="@+id/password"
35         android:layout_width="wrap_content"
36         android:layout_height="wrap_content"
37         android:layout_marginLeft="20dip"
38         android:layout_marginRight="20dip"
39        
40         android:text="@string/password"
41         android:gravity="left"
42         android:textAppearance="?android:attr/textAppearanceMedium" />
43    
44     <EditText
45 android:id="@+id/psw"
46         android:layout_width="fill_parent"
47         android:layout_height="wrap_content"
48         android:layout_marginLeft="20dip"
49         android:layout_marginRight="20dip"
50         android:scrollHorizontally="true"
51         android:autoText="false"
52         android:capitalize="none"
53         android:gravity="fill_horizontal"
54         android:hint="@string/pswhint"
55         android:inputType="textPassword"
56         android:password="true"
57         android:textAppearance="?android:attr/textAppearanceMedium" />
58        
59 </LinearLayout>
运行效果：






在运行的过程中，一直报错，找不到原因，后来，终于发现，在dialog.xml中把EditText写成了EditView。粗心惹的祸啊，浪费了不少时间。

03-19 11:12:05.748: E/AndroidRuntime(368): android.view.InflateException: Binary XML file line #19: Error inflating class EditView