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  • 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>
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  • 原文地址:https://www.cnblogs.com/lihaibo-Leao/p/4488038.html
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