【转自天津-小菜鸟】android 下载应用通知栏显示进度下完之后点击安装（很实用）

先看效果图：这是本人的习惯，先上图显示效果，看是否是想要的，再看代码。有图有真相

代码：

main

 1 package com.gem.hsx.appupdate;
 2 
 3 import android.app.Activity;
 4 import android.content.Intent;
 5 import android.os.Bundle;
 6 import android.view.View;
 7 import android.view.View.OnClickListener;
 8 import android.widget.Button;
 9 
10 public class Main extends Activity {
11 
12     @Override
13     public void onCreate(Bundle savedInstanceState) {
14         super.onCreate(savedInstanceState);
15         setContentView(R.layout.main);
16         Button btnok=(Button) findViewById(R.id.btnok);
17         btnok.setOnClickListener(new BtnokOnClickListener());
18     }
19 
20     private class BtnokOnClickListener implements OnClickListener 
21     {
22 
23         @Override
24         public void onClick(View v) {
25             Intent updateIntent =new Intent(Main.this, UpdateService.class);
26             updateIntent.putExtra("titleId",R.string.app_name);
27             startService(updateIntent);
28 
29         }
30     }
31 }

UpdateService:

  1 package com.gem.hsx.appupdate;
  2 
  3 import java.io.File;
  4 import java.io.FileOutputStream;
  5 import java.io.InputStream;
  6 import java.net.HttpURLConnection;
  7 import java.net.URL;
  8 
  9 import android.app.Notification;
 10 import android.app.NotificationManager;
 11 import android.app.PendingIntent;
 12 import android.app.Service;
 13 import android.content.Intent;
 14 import android.net.Uri;
 15 import android.os.Environment;
 16 import android.os.Handler;
 17 import android.os.IBinder;
 18 import android.os.Message;
 19 
 20 public class UpdateService extends Service{
 21     //标题
 22     private int titleId = 0;
 23     private final static int DOWNLOAD_COMPLETE = 0;
 24     private final static int DOWNLOAD_FAIL = 1; 
 25     //文件存储
 26     private File updateDir = null;
 27     private File updateFile = null;
 28      
 29     //通知栏
 30     private NotificationManager updateNotificationManager = null;
 31     private Notification updateNotification = null;
 32     //通知栏跳转Intent
 33     private Intent updateIntent = null;
 34     private PendingIntent updatePendingIntent = null;
 35     @Override
 36     public IBinder onBind(Intent intent) {
 37         // TODO Auto-generated method stub
 38         return null;
 39     }
 40 
 41     @Override
 42     public void onCreate() {
 43         
 44         super.onCreate();
 45     }
 46 
 47     @Override
 48     public int onStartCommand(Intent intent, int flags, int startId) {
 49         //获取传值
 50         titleId = intent.getIntExtra("titleId",0);
 51         //创建文件
 52         if(android.os.Environment.MEDIA_MOUNTED.equals(android.os.Environment.getExternalStorageState())){
 53             updateDir = new File(Environment.getExternalStorageDirectory(),"app/download/");
 54             updateFile = new File(updateDir.getPath(),getResources().getString(titleId)+".apk");
 55         }
 56      
 57         this.updateNotificationManager = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
 58         this.updateNotification = new Notification();
 59      
 60         //设置下载过程中，点击通知栏，回到主界面
 61         updateIntent = new Intent(this, Main.class);
 62         updatePendingIntent = PendingIntent.getActivity(this,0,updateIntent,0);
 63         //设置通知栏显示内容
 64         updateNotification.icon = R.drawable.ic_launcher;
 65         updateNotification.tickerText = "开始下载";
 66         updateNotification.setLatestEventInfo(this,"上海地铁","0%",updatePendingIntent);
 67         //发出通知
 68         updateNotificationManager.notify(0,updateNotification);
 69      
 70         //开启一个新的线程下载，如果使用Service同步下载，会导致ANR问题，Service本身也会阻塞
 71         new Thread(new updateRunnable()).start();//这个是下载的重点，是下载的过程
 72          
 73         return super.onStartCommand(intent, flags, startId);
 74     }
 75     private Handler updateHandler = new  Handler(){
 76         @Override
 77         public void handleMessage(Message msg) {
 78              switch(msg.what){
 79                 case DOWNLOAD_COMPLETE:
 80                     updateNotification.flags|=updateNotification.FLAG_AUTO_CANCEL;
 81                     //点击安装PendingIntent
 82                     Uri uri = Uri.fromFile(updateFile);
 83                     Intent installIntent = new Intent(Intent.ACTION_VIEW);
 84                     installIntent.setDataAndType(uri, "application/vnd.android.package-archive");
 85                     updatePendingIntent = PendingIntent.getActivity(UpdateService.this, 0, installIntent, 0);
 86                      
 87                     updateNotification.defaults = Notification.DEFAULT_SOUND;//铃声提醒 
 88                     updateNotification.setLatestEventInfo(UpdateService.this, "上海地铁", "下载完成,点击安装。", updatePendingIntent);
 89                     updateNotificationManager.notify(0, updateNotification);
 90                      
 91                     //停止服务
 92                     stopService(updateIntent);
 93                 case DOWNLOAD_FAIL:
 94                     //下载失败
 95                     updateNotification.setLatestEventInfo(UpdateService.this, "上海地铁", "下载完成,点击安装。", updatePendingIntent);
 96                     updateNotificationManager.notify(0, updateNotification);
 97                 default:
 98                     stopService(updateIntent);
 99             }  
100         }
101     };
102     
103     
104     class updateRunnable implements Runnable {
105         Message message = updateHandler.obtainMessage();
106         public void run() {
107             message.what = DOWNLOAD_COMPLETE;
108             try{
109                 //增加权限<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE">;
110                 if(!updateDir.exists()){
111                     updateDir.mkdirs();
112                 }
113                 if(!updateFile.exists()){
114                     updateFile.createNewFile();
115                 }
116                 //下载函数，以QQ为例子
117                 //增加权限<uses-permission android:name="android.permission.INTERNET">;
118                 long downloadSize = downloadUpdateFile("http://softfile.3g.qq.com:8080/msoft/179/1105/10753/MobileQQ1.0(Android)_Build0198.apk",updateFile);
119                 if(downloadSize>0){
120                     //下载成功
121                     updateHandler.sendMessage(message);
122                 }
123             }catch(Exception ex){
124                 ex.printStackTrace();
125                 message.what = DOWNLOAD_FAIL;
126                 //下载失败
127                 updateHandler.sendMessage(message);
128             }
129         }
130     }
131     
132     
133     
134     public long downloadUpdateFile(String downloadUrl, File saveFile) throws Exception {
135         //这样的下载代码很多，我就不做过多的说明
136         int downloadCount = 0;
137         int currentSize = 0;
138         long totalSize = 0;
139         int updateTotalSize = 0;
140          
141         HttpURLConnection httpConnection = null;
142         InputStream is = null;
143         FileOutputStream fos = null;
144          
145         try {
146             URL url = new URL(downloadUrl);
147             httpConnection = (HttpURLConnection)url.openConnection();
148             httpConnection.setRequestProperty("User-Agent", "PacificHttpClient");
149             if(currentSize > 0) {
150                 httpConnection.setRequestProperty("RANGE", "bytes=" + currentSize + "-");
151             }
152             httpConnection.setConnectTimeout(10000);
153             httpConnection.setReadTimeout(20000);
154             updateTotalSize = httpConnection.getContentLength();
155             if (httpConnection.getResponseCode() == 404) {
156                 throw new Exception("fail!");
157             }
158             is = httpConnection.getInputStream();                   
159             fos = new FileOutputStream(saveFile, false);
160             byte buffer[] = new byte[4096];
161             int readsize = 0;
162             while((readsize = is.read(buffer)) > 0){
163                 fos.write(buffer, 0, readsize);
164                 totalSize += readsize;
165                 //为了防止频繁的通知导致应用吃紧，百分比增加10才通知一次
166                 if((downloadCount == 0)||(int) (totalSize*100/updateTotalSize)-10>downloadCount){ 
167                     downloadCount += 10;
168                     updateNotification.setLatestEventInfo(UpdateService.this, "正在下载", (int)totalSize*100/updateTotalSize+"%", updatePendingIntent);
169                     updateNotificationManager.notify(0, updateNotification);
170                 }                        
171             }
172         } finally {
173             if(httpConnection != null) {
174                 httpConnection.disconnect();
175             }
176             if(is != null) {
177                 is.close();
178             }
179             if(fos != null) {
180                 fos.close();
181             }
182         }
183         return totalSize;
184     }
185         
186 }

AndroidManifest.xml

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
 3     package="com.gem.hsx.appupdate"
 4     android:versionCode="1"
 5     android:versionName="1.0" >
 6 
 7     <uses-sdk android:minSdkVersion="15" />
 8 
 9     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
10     <uses-permission android:name="android.permission.INTERNET"/>
11 
12     <application
13         android:icon="@drawable/ic_launcher"
14         android:label="@string/app_name" >
15         <activity
16             android:name=".Main"
17             android:label="@string/app_name" >
18             <intent-filter>
19                 <action android:name="android.intent.action.MAIN" />
20 
21                 <category android:name="android.intent.category.LAUNCHER" />
22             </intent-filter>
23         </activity>
24 
25         <service
26             android:name="UpdateService"
27             android:label="@string/app_name" >
28         </service>
29     </application>
30 
31 </manifest>

posted on 2012-11-08 11:19 蓼蓝的梦想阅读(827) 评论(0) 编辑收藏举报

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公告

【转自天津-小菜鸟】android 下载应用通知栏显示进度下完之后点击安装（很实用）

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公告

【转自天津-小菜鸟】android 下载应用 通知栏显示进度 下完之后点击安装 （很实用）

【转自天津-小菜鸟】android 下载应用通知栏显示进度下完之后点击安装（很实用）