Android自动检测版本及自动升级

转:http://blog.csdn.net/furongkang/article/details/6886526

步骤:

1.检测当前版本的信息AndroidManifest.xml-->manifest-->android:versionName。

2.从服务器获取版本号(版本号存在于xml文件中)并与当前检测到的版本进行匹配,如果不匹配,提示用户进行升级,如果匹配则进入程序主界面。

3.当提示用户进行版本升级时,如果用户点击了确定,系统将自动从服务器上下载并进行自动升级,如果点击取消将进入程序主界面。

效果图:

      

    

获取当前程序的版本号:

 1     /*
 2      * 获取当前程序的版本号 
 3      */
 4     private String getVersionName() throws Exception{
 5         //获取packagemanager的实例 
 6         PackageManager packageManager = getPackageManager();
 7         //getPackageName()是你当前类的包名,0代表是获取版本信息
 8         PackageInfo packInfo = packageManager.getPackageInfo(getPackageName(), 0);
 9         return packInfo.versionName; 
10     }

获取服务器端的版本号:

 1     /*
 2      * 用pull解析器解析服务器返回的xml文件 (xml封装了版本号)
 3      */
 4     public static UpdataInfo getUpdataInfo(InputStream is) throws Exception{
 5         XmlPullParser  parser = Xml.newPullParser();  
 6         parser.setInput(is, "utf-8");//设置解析的数据源 
 7         int type = parser.getEventType();
 8         UpdataInfo info = new UpdataInfo();//实体
 9         while(type != XmlPullParser.END_DOCUMENT ){
10             switch (type) {
11             case XmlPullParser.START_TAG:
12                 if("version".equals(parser.getName())){
13                     info.setVersion(parser.nextText());    //获取版本号
14                 }else if ("url".equals(parser.getName())){
15                     info.setUrl(parser.nextText());    //获取要升级的APK文件
16                 }else if ("description".equals(parser.getName())){
17                     info.setDescription(parser.nextText());    //获取该文件的信息
18                 }
19                 break;
20             }
21             type = parser.next();
22         }
23         return info;
24     }

从服务器下载apk:

 1     public static File getFileFromServer(String path, ProgressDialog pd) throws Exception{
 2         //如果相等的话表示当前的sdcard挂载在手机上并且是可用的
 3         if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){
 4             URL url = new URL(path);
 5             HttpURLConnection conn =  (HttpURLConnection) url.openConnection();
 6             conn.setConnectTimeout(5000);
 7             //获取到文件的大小 
 8             pd.setMax(conn.getContentLength());
 9             InputStream is = conn.getInputStream();
10             File file = new File(Environment.getExternalStorageDirectory(), "updata.apk");
11             FileOutputStream fos = new FileOutputStream(file);
12             BufferedInputStream bis = new BufferedInputStream(is);
13             byte[] buffer = new byte[1024];
14             int len ;
15             int total=0;
16             while((len =bis.read(buffer))!=-1){
17                 fos.write(buffer, 0, len);
18                 total+= len;
19                 //获取当前下载量
20                 pd.setProgress(total);
21             }
22             fos.close();
23             bis.close();
24             is.close();
25             return file;
26         }
27         else{
28             return null;
29         }
30     }

匹配、下载、自动安装:

  1     /*
  2      * 从服务器获取xml解析并进行比对版本号 
  3      */
  4     public class CheckVersionTask implements Runnable{
  5 
  6         public void run() {
  7             try {
  8                 //从资源文件获取服务器 地址 
  9                 String path = getResources().getString(R.string.serverurl);
 10                 //包装成url的对象 
 11                 URL url = new URL(path);
 12                 HttpURLConnection conn =  (HttpURLConnection) url.openConnection(); 
 13                 conn.setConnectTimeout(5000);
 14                 InputStream is =conn.getInputStream(); 
 15                 info =  UpdataInfoParser.getUpdataInfo(is);
 16                 
 17                 if(info.getVersion().equals(versionname)){
 18                     Log.i(TAG,"版本号相同无需升级");
 19                     LoginMain();
 20                 }else{
 21                     Log.i(TAG,"版本号不同 ,提示用户升级 ");
 22                     Message msg = new Message();
 23                     msg.what = UPDATA_CLIENT;
 24                     handler.sendMessage(msg);
 25                 }
 26             } catch (Exception e) {
 27                 // 待处理 
 28                 Message msg = new Message();
 29                 msg.what = GET_UNDATAINFO_ERROR;
 30                 handler.sendMessage(msg);
 31                 e.printStackTrace();
 32             } 
 33         }
 34     }
 35     
 36     Handler handler = new Handler(){
 37         
 38         @Override
 39         public void handleMessage(Message msg) {
 40             // TODO Auto-generated method stub
 41             super.handleMessage(msg);
 42             switch (msg.what) {
 43             case UPDATA_CLIENT:
 44                 //对话框通知用户升级程序 
 45                 showUpdataDialog();
 46                 break;
 47             case GET_UNDATAINFO_ERROR:
 48                 //服务器超时 
 49                 Toast.makeText(getApplicationContext(), "获取服务器更新信息失败", 1).show();
 50                 LoginMain();
 51                 break;    
 52             case DOWN_ERROR:
 53                 //下载apk失败
 54                 Toast.makeText(getApplicationContext(), "下载新版本失败", 1).show();
 55                 LoginMain();
 56                 break;    
 57             }
 58         }
 59     };
 60     
 61     /*
 62      * 
 63      * 弹出对话框通知用户更新程序 
 64      * 
 65      * 弹出对话框的步骤:
 66      *     1.创建alertDialog的builder.  
 67      *    2.要给builder设置属性, 对话框的内容,样式,按钮
 68      *    3.通过builder 创建一个对话框
 69      *    4.对话框show()出来  
 70      */
 71     protected void showUpdataDialog() {
 72         AlertDialog.Builder builer = new Builder(this) ; 
 73         builer.setTitle("版本升级");
 74         builer.setMessage(info.getDescription());
 75         //当点确定按钮时从服务器上下载 新的apk 然后安装 
 76         builer.setPositiveButton("确定", new OnClickListener() {
 77         public void onClick(DialogInterface dialog, int which) {
 78                 Log.i(TAG,"下载apk,更新");
 79                 downLoadApk();
 80             }   
 81         });
 82         //当点取消按钮时进行登录
 83         builer.setNegativeButton("取消", new OnClickListener() {
 84             public void onClick(DialogInterface dialog, int which) {
 85                 // TODO Auto-generated method stub
 86                 LoginMain();
 87             }
 88         });
 89         AlertDialog dialog = builer.create();
 90         dialog.show();
 91     }
 92     
 93     /*
 94      * 从服务器中下载APK
 95      */
 96     protected void downLoadApk() {
 97         final ProgressDialog pd;    //进度条对话框
 98         pd = new  ProgressDialog(this);
 99         pd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
100         pd.setMessage("正在下载更新");
101         pd.show();
102         new Thread(){
103             @Override
104             public void run() {
105                 try {
106                     File file = DownLoadManager.getFileFromServer(info.getUrl(), pd);
107                     sleep(3000);
108                     installApk(file);
109                     pd.dismiss(); //结束掉进度条对话框
110                 } catch (Exception e) {
111                     Message msg = new Message();
112                     msg.what = DOWN_ERROR;
113                     handler.sendMessage(msg);
114                     e.printStackTrace();
115                 }
116             }}.start();
117     }
118     
119     //安装apk 
120     protected void installApk(File file) {
121         Intent intent = new Intent();
122         //执行动作
123         intent.setAction(Intent.ACTION_VIEW);
124         //执行的数据类型
125         intent.setDataAndType(Uri.fromFile(file), "application/vnd.android.package-archive");
126         startActivity(intent);
127     }
128     
129     /*
130      * 进入程序的主界面
131      */
132     private void LoginMain(){
133         Intent intent = new Intent(this,MainActivity.class);
134         startActivity(intent);
135         //结束掉当前的activity 
136         this.finish();
137     }

UpdataInfo:

 1 public class UpdataInfo {
 2     private String version;
 3     private String url;
 4     private String description;
 5     public String getVersion() {
 6         return version;
 7     }
 8     public void setVersion(String version) {
 9         this.version = version;
10     }
11     public String getUrl() {
12         return url;
13     }
14     public void setUrl(String url) {
15         this.url = url;
16     }
17     public String getDescription() {
18         return description;
19     }
20     public void setDescription(String description) {
21         this.description = description;
22     }
23 }

update.xml:

1 <?xml version="1.0" encoding="utf-8"?>
2 <info>
3     <version>2.0</version>
4     <url>http://192.168.1.187:8080/mobilesafe.apk</url>
5     <description>检测到最新版本,请及时更新!</description>
6 </info>
原文地址:https://www.cnblogs.com/lihaibo-Leao/p/4488038.html