public void addEnvToIntent(Intent intent) {
   Map<String, String> envMap = System.getenv();
   Set<Map.Entry<String, String>> envSet = envMap.entrySet();
   Iterator<Map.Entry<String, String>> envIter = envSet.iterator();
   int c = 0;
   while (envIter.hasNext()) {
     Map.Entry<String, String> entry = envIter.next();
     intent.putExtra("env" + c, entry.getKey() + "=" + entry.getValue());
     c++;
   }
 }
  private void checkAndLaunchUpdate() {
    Log.i(LOG_FILE_NAME, "Checking for an update");

    int statusCode = 8; // UNEXPECTED_ERROR
    File baseUpdateDir = null;
    if (Build.VERSION.SDK_INT >= 8)
      baseUpdateDir = getExternalFilesDir(Environment.DIRECTORY_DOWNLOADS);
    else baseUpdateDir = new File(Environment.getExternalStorageDirectory().getPath(), "download");

    File updateDir = new File(new File(baseUpdateDir, "updates"), "0");

    File updateFile = new File(updateDir, "update.apk");
    File statusFile = new File(updateDir, "update.status");

    if (!statusFile.exists() || !readUpdateStatus(statusFile).equals("pending")) return;

    if (!updateFile.exists()) return;

    Log.i(LOG_FILE_NAME, "Update is available!");

    // Launch APK
    File updateFileToRun = new File(updateDir, getPackageName() + "-update.apk");
    try {
      if (updateFile.renameTo(updateFileToRun)) {
        String amCmd =
            "/system/bin/am start -a android.intent.action.VIEW "
                + "-n com.android.packageinstaller/.PackageInstallerActivity -d file://"
                + updateFileToRun.getPath();
        Log.i(LOG_FILE_NAME, amCmd);
        Runtime.getRuntime().exec(amCmd);
        statusCode = 0; // OK
      } else {
        Log.i(LOG_FILE_NAME, "Cannot rename the update file!");
        statusCode = 7; // WRITE_ERROR
      }
    } catch (Exception e) {
      Log.i(LOG_FILE_NAME, "error launching installer to update", e);
    }

    // Update the status file
    String status = statusCode == 0 ? "succeeded\n" : "failed: " + statusCode + "\n";

    OutputStream outStream;
    try {
      byte[] buf = status.getBytes("UTF-8");
      outStream = new FileOutputStream(statusFile);
      outStream.write(buf, 0, buf.length);
      outStream.close();
    } catch (Exception e) {
      Log.i(LOG_FILE_NAME, "error writing status file", e);
    }

    if (statusCode == 0) System.exit(0);
  }
  @Override
  protected void onNewIntent(Intent intent) {
    if (checkLaunchState(LaunchState.GeckoExiting)) {
      // We're exiting and shouldn't try to do anything else just incase
      // we're hung for some reason we'll force the process to exit
      System.exit(0);
      return;
    }
    final String action = intent.getAction();
    if (ACTION_DEBUG.equals(action)
        && checkAndSetLaunchState(LaunchState.Launching, LaunchState.WaitForDebugger)) {

      mMainHandler.postDelayed(
          new Runnable() {
            public void run() {
              Log.i(LOG_FILE_NAME, "Launching from debug intent after 5s wait");
              setLaunchState(LaunchState.Launching);
              launch(null);
            }
          },
          1000 * 5 /* 5 seconds */);
      Log.i(LOG_FILE_NAME, "Intent : ACTION_DEBUG - waiting 5s before launching");
      return;
    }
    if (checkLaunchState(LaunchState.WaitForDebugger) || launch(intent)) return;

    if (Intent.ACTION_MAIN.equals(action)) {
      Log.i(LOG_FILE_NAME, "Intent : ACTION_MAIN");
      GeckoAppShell.sendEventToGecko(new GeckoEvent(""));
    } else if (Intent.ACTION_VIEW.equals(action)) {
      String uri = intent.getDataString();
      GeckoAppShell.sendEventToGecko(new GeckoEvent(uri));
      Log.i(LOG_FILE_NAME, "onNewIntent: " + uri);
    } else if (ACTION_WEBAPP.equals(action)) {
      String uri = intent.getStringExtra("args");
      GeckoAppShell.sendEventToGecko(new GeckoEvent(uri));
      Log.i(LOG_FILE_NAME, "Intent : WEBAPP - " + uri);
    } else if (ACTION_BOOKMARK.equals(action)) {
      String args = intent.getStringExtra("args");
      GeckoAppShell.sendEventToGecko(new GeckoEvent(args));
      Log.i(LOG_FILE_NAME, "Intent : BOOKMARK - " + args);
    }
  }