app/src/main/java/ai/suanzi/rtmpclient/CheckVersionInfoTask.java

   1 package ai.suanzi.rtmpclient;
   2
   3 import android.content.Context;
   4 import android.os.AsyncTask;
   5 import org.apache.log4j.Logger;
   6 import org.json.JSONException;
   7 import org.json.JSONObject;
   8
   9 import java.io.BufferedReader;
  10 import java.io.FileNotFoundException;
  11 import java.io.IOException;
  12 import java.io.InputStream;
  13 import java.io.InputStreamReader;
  14 import java.net.HttpURLConnection;
  15 import java.net.URL;
  16 import android.content.Intent;
  17
  18
  19 public class CheckVersionInfoTask extends AsyncTask<Void, Void, String> {
  20
  21     private static Logger gLogger = Logger.getLogger("CheckVersionInfoTask");
  22     private Context mContext;
  23
  24     private static final String VERSION_INFO_URL = "http://downloads.suanzi.ai/RtmpClient/update.json";
  25
  26     /* the content of update.json as below
  27     peng@[~/web/RtmpClient]>> cat update.json
  28     {
  29         "url":"http://downloads.suanzi.ai/RtmpClient/RtmpClient-v0.3.3-release.apk",
  30         "versionCode":33,
  31         "updateMessage":"1. Fix bug<br/>2. Update<br/>3. test"
  32     }
  33     */
  34
  35     public CheckVersionInfoTask(Context context){
  36         this.mContext = context;
  37     }
  38
  39     @Override
  40     protected String doInBackground(Void... params){
  41         gLogger.debug("doInBackground");
  42         return getVersionInfo(VERSION_INFO_URL);
  43     }
  44
  45     @Override
  46     protected void onPreExecute(){
  47         gLogger.debug("onPreExecute");
  48     }
  49
  50     @Override
  51     protected void onPostExecute(String result) {
  52         gLogger.debug("onPostExecute, update.json " + result);
  53         parseJson(result);
  54     }
  55
  56     private String getVersionInfo(String urlStr) {
  57         HttpURLConnection urlConnection = null;
  58         InputStream is = null;
  59         BufferedReader buffer = null;
  60         String result = null;
  61         try {
  62             URL url = new URL(urlStr);
  63             urlConnection = (HttpURLConnection) url.openConnection();
  64             is = urlConnection.getInputStream();
  65             buffer = new BufferedReader(new InputStreamReader(is));
  66             StringBuilder strBuilder = new StringBuilder();
  67             String line;
  68             while ((line = buffer.readLine()) != null) {
  69                 strBuilder.append(line);
  70             }
  71             result = strBuilder.toString();
  72         } catch (FileNotFoundException e){
  73             gLogger.error("getVersionInfo - File not found " + e.getMessage());
  74             e.printStackTrace();
  75
  76         } catch (Exception e){
  77             gLogger.error("getVersionInfo - error: " + e.getMessage());
  78             e.printStackTrace();
  79         } finally {
  80             if (buffer != null) {
  81                 try {
  82                     buffer.close();
  83                 } catch (IOException e){
  84                     e.printStackTrace();
  85                 }
  86             }
  87             if (urlConnection != null){
  88                 urlConnection.disconnect();
  89             }
  90         }
  91         return result;
  92     }
  93
  94     private void parseJson(String result) {
  95         if(result == null || result.length() == 0) {
  96             gLogger.error("parseJson - " + result);
  97             return;
  98         }
  99         try {
 100             JSONObject obj = new JSONObject(result);
 101             String apkUrl = obj.getString("url");
 102             String updateMessage = obj.getString("updateMessage");
 103             int apkCode = obj.getInt("versionCode");
 104             int versionCode = getCurrentVersionCode();
 105             gLogger.error("apkUrl: " + apkUrl);
 106             gLogger.error("UpdateMessage: " + updateMessage);
 107             gLogger.error("apkCode: " + apkCode);
 108             gLogger.error("versionCode: " + versionCode);
 109             if(apkCode > versionCode){
 110                 gLogger.debug("Found new version, current is " + versionCode + ", will update to " + apkCode);
 111                 goToDownloadApk(apkUrl);
 112             }
 113         } catch (JSONException e){
 114             gLogger.error("parseJson - error " + e.getMessage());
 115             e.printStackTrace();
 116         }
 117     }
 118
 119     private int getCurrentVersionCode(){
 120         return BuildConfig.VERSION_CODE;
 121     }
 122
 123     private void goToDownloadApk(String downloadUrl){
 124         Intent intent = new Intent(mContext, DownloadApkService.class);
 125         intent.putExtra("apkUrl", downloadUrl);
 126         mContext.startService(intent);
 127     }
 128 }