Android组件 稍等提示（ProgressDialog）

/res/layout/main.xml代码如下：

[html] view plain copy print ?

1. <?xml version="1.0" encoding="utf-8"?>  
2. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  
3.     android:layout_width="fill_parent"  
4.     android:layout_height="fill_parent"  
5.     android:orientation="vertical" >  
6.     <Button  
7.         android:id="@+id/btn_circle"  
8.         android:layout_width="fill_parent"  
9.         android:layout_height="wrap_content"  
10.         android:text="圆形进度条" />  
11.     <Button  
12.         android:id="@+id/btn_long"  
13.         android:layout_width="fill_parent"  
14.         android:layout_height="wrap_content"  
15.         android:text="长形进度条" />  
16. </LinearLayout>  

Java代码如下：

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1. package com.demo.android.progressDialog;  
2.   
3. import android.app.Activity;  
4. import android.app.ProgressDialog;  
5. import android.content.DialogInterface;  
6. import android.os.Bundle;  
7. import android.view.View;  
8. import android.widget.Button;  
9.   
10. public class MainActivity extends Activity {  
11.     private Button btnCircle;  
12.     private Button btnLong;  
13.     private ProgressDialog progressDialog;  
14.     @Override  
15.     public void onCreate(Bundle savedInstanceState) {  
16.         super.onCreate(savedInstanceState);  
17.         setContentView(R.layout.main);  
18.         findViews();  
19.     }  
20.     private void findViews() {  
21.         btnCircle=(Button) findViewById(R.id.btn_circle);  
22.         btnCircle.setOnClickListener(btnCircleOnClickListener);  
23.         btnLong=(Button) findViewById(R.id.btn_long);  
24.         btnLong.setOnClickListener(btnLongOnClickListener);  
25.     }  
26.     /** 
27.      * 显示圆形进度条 
28.      */  
29.     private View.OnClickListener btnCircleOnClickListener=new View.OnClickListener() {  
30.         @Override  
31.         public void onClick(View v) {  
32.             progressDialog=new ProgressDialog(MainActivity.this);  
33.             //设置进度条的样式为圆形   
34.             progressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);  
35.             progressDialog.setTitle("提示");  
36.             progressDialog.setMessage("数据加载中，请稍后....");  
37.             //设置进度条的图标   
38.             progressDialog.setIcon(R.drawable.android);  
39.             //设置进度条是否为不明确   
40.             progressDialog.setIndeterminate(false);  
41.             //设置进度条是否按返回键取消   
42.             progressDialog.setCancelable(true);  
43.             progressDialog.setButton("确定", new DialogInterface.OnClickListener() {  
44.                 @Override  
45.                 public void onClick(DialogInterface dialog, int which) {  
46.                     progressDialog.cancel();  
47.                 }  
48.             });  
49.             progressDialog.show();  
50.         }  
51.     };  
52.     /** 
53.      * 显示长形进度条 
54.      */  
55.     private View.OnClickListener btnLongOnClickListener=new View.OnClickListener() {  
56.         int count=0;  
57.           
58.         @Override  
59.         public void onClick(View v) {  
60.             progressDialog=new ProgressDialog(MainActivity.this);  
61.             progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);  
62.             progressDialog.setTitle("提示");  
63.             progressDialog.setMessage("数据加载中，请稍后....");  
64.             progressDialog.setIcon(R.drawable.android);  
65.             progressDialog.setIndeterminate(false);  
66.             progressDialog.setCancelable(true);  
67.             progressDialog.setMax(200);  //设置最大值   
68.             progressDialog.setProgress(0);  //设置当前默认进度为0   
69.             progressDialog.setSecondaryProgress(100);  //设置第二进度条的值为100   
70.             progressDialog.setButton("取消", new DialogInterface.OnClickListener() {  
71.                 @Override  
72.                 public void onClick(DialogInterface dialog, int which) {  
73.                     progressDialog.cancel();  
74.                 }  
75.             });  
76.             progressDialog.show();  
77.               
78.             //定义线程动态改变当前进度条的值   
79.             new Thread(){     
80.                 public void run(){  
81.                     while(count<=200){  
82.                         progressDialog.setProgress(count++);  
83.                         try {  
84.                             Thread.sleep(100);  
85.                         } catch (InterruptedException e) {  
86.                             e.printStackTrace();  
87.                         }  
88.                     };  
89.                 }  
90.             }.start();  
91.         }  
92.     };  
93. }  

效果如下：