难点与解决思路

1. 检测更新：

    检测更新接口
    path:/apk/update
    method:POST
    -------param------
    {
      "versionCode" : "10000",
      "channl"  : "dev"
    }
    -----return-----
    {
      "code" : "000000",
      "data" : {
            "url":"",
            "versionCode":"10001",
            "versionName":"dev",
            "des":"更新描述"
            "md5":""
      }
      "msg" : "success"
    }
   

2. 下载，我这里用的rx2-android-networking来下载的

    public void download(final ApkInfo apkInfo) {
        final File dest = new File(context.getCacheDir(), apkInfo.getVersionCode() + ".apk");
        if (verifyInstallApk(apkInfo, dest)) {
            return;
        }
        final File temp = new File(context.getCacheDir(), apkInfo.getVersionCode() + ".apk.temp");
        AndroidNetworking.download(apkInfo.getUrl(), temp.getParent(), temp.getName())
                .build()
                .startDownload(new DownloadListener() {
                    @Override
                    public void onDownloadComplete() {
                        if (dest.exists()) dest.delete();
                        temp.renameTo(dest);
                        verifyInstallApk(apkInfo, dest);
                    }
   
                    @Override
                    public void onError(ANError anError) {
                        AppLogger.e("apk更新失败" + anError.getErrorDetail());
                    }
                });
    }
   
   

3. apk文件校验

    private boolean verifyInstallApk(ApkInfo apkInfo, File dest) {
        if (dest.exists()) {
            String md5 = EncryptUtils.encryptMD5File2String(dest);
            if (apkInfo.getMd5().equals(md5)) {
                installApk(dest);
                return true;
            }
        }
        return false;
    }
   
   

4. 安装
   1. 普通安装

       private void installApp(File file) {
           if (file == null) return;
           Intent intent = new Intent(Intent.ACTION_VIEW);
           Uri data;
           String type = "application/vnd.android.package-archive";
           if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) {
               data = Uri.fromFile(file);
           } else {
               intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
               String authority = Utils.getApp().getPackageName() + ".utilcode.provider";
               data = FileProvider.getUriForFile(Utils.getApp(), authority, file);
           }
           intent.setDataAndType(data, type);
           intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
           context.startActivity(intent);
       }
      

   2. 静默安装

       public static boolean installSlient(String path) {
           String cmd = String.format("pm install -r %s", path);
           Process process = null;
           DataOutputStream os = null;
           BufferedReader successResult = null;
           BufferedReader errorResult = null;
           StringBuilder successMsg = new StringBuilder();
           StringBuilder errorMsg = new StringBuilder();
           try {
               //静默安装需要root权限
               process = Runtime.getRuntime().exec(cmd);
               os = new DataOutputStream(process.getOutputStream());
               os.flush();
               process.waitFor();
               successResult = new BufferedReader(new InputStreamReader(process.getInputStream()));
               errorResult = new BufferedReader(new InputStreamReader(process.getErrorStream()));
               String s;
               while ((s = successResult.readLine()) != null) {
                   successMsg.append(s);
                   AppLogger.d("installSlient success", "successMsg = " + s);
               }
               while ((s = errorResult.readLine()) != null) {
                   AppLogger.d("installSlient error", "errorResult = " + s);
                   errorMsg.append(s);
               }
           } catch (Exception e) {
               e.printStackTrace();
           } finally {
               try {
                   if (os != null) {
                       os.close();
                   }
                   if (process != null) {
                       process.destroy();
                   }
                   if (successResult != null) {
                       successResult.close();
                   }
                   if (errorResult != null) {
                       errorResult.close();
                   }
               } catch (Exception e) {
                   e.printStackTrace();
               }
           }
           return successMsg.toString().equalsIgnoreCase("SUCCESS");
       }
      

更新后自启动

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