@Override
    protected ResponseList<DirectMessage> doInBackground(Void... params) {
      try {
        Twitter twitter = TwitterManager.getTwitter();

        // 受信したDM
        Paging directMessagesPaging = new Paging();
        if (mDirectMessagesMaxId > 0 && !mReloading) {
          directMessagesPaging.setMaxId(mDirectMessagesMaxId - 1);
          directMessagesPaging.setCount(BasicSettings.getPageCount() / 2);
        } else {
          directMessagesPaging.setCount(10);
        }
        ResponseList<DirectMessage> directMessages =
            twitter.getDirectMessages(directMessagesPaging);
        for (DirectMessage directMessage : directMessages) {
          if (mDirectMessagesMaxId <= 0L || mDirectMessagesMaxId > directMessage.getId()) {
            mDirectMessagesMaxId = directMessage.getId();
          }
        }

        // 送信したDM
        Paging sentDirectMessagesPaging = new Paging();
        if (mSentDirectMessagesMaxId > 0 && !mReloading) {
          sentDirectMessagesPaging.setMaxId(mSentDirectMessagesMaxId - 1);
          sentDirectMessagesPaging.setCount(BasicSettings.getPageCount() / 2);
        } else {
          sentDirectMessagesPaging.setCount(10);
        }
        ResponseList<DirectMessage> sentDirectMessages =
            twitter.getSentDirectMessages(sentDirectMessagesPaging);
        for (DirectMessage directMessage : sentDirectMessages) {
          if (mSentDirectMessagesMaxId <= 0L || mSentDirectMessagesMaxId > directMessage.getId()) {
            mSentDirectMessagesMaxId = directMessage.getId();
          }
        }

        directMessages.addAll(sentDirectMessages);

        // 日付でソート
        Collections.sort(
            directMessages,
            new Comparator<DirectMessage>() {

              @Override
              public int compare(DirectMessage arg0, DirectMessage arg1) {
                return arg1.getCreatedAt().compareTo(arg0.getCreatedAt());
              }
            });
        return directMessages;
      } catch (OutOfMemoryError e) {
        return null;
      } catch (Exception e) {
        e.printStackTrace();
        return null;
      }
    }
  public static void switchAccessToken(final AccessToken accessToken) {
    AccessTokenManager.setAccessToken(accessToken);
    if (BasicSettings.getStreamingMode()) {
      MessageUtil.showToast(R.string.toast_destroy_streaming);
      sUserStreamAdapter.stop();
      new AsyncTask<Void, Void, Void>() {
        @Override
        protected Void doInBackground(Void... params) {
          sTwitterStream.cleanUp();
          sTwitterStream.shutdown();
          return null;
        }

        @Override
        protected void onPostExecute(Void status) {
          sTwitterStream.setOAuthAccessToken(accessToken);
          new Handler()
              .postDelayed(
                  new Runnable() {
                    @Override
                    public void run() {
                      MessageUtil.showToast(R.string.toast_create_streaming);
                      sUserStreamAdapter.start();
                      sTwitterStream.user();
                    }
                  },
                  5000);
        }
      }.execute();
    }
    EventBus.getDefault().post(new AccountChangeEvent());
  }
 public static void startStreaming() {
   if (sTwitterStream != null) {
     if (!sTwitterStreamConnected) {
       sUserStreamAdapter.start();
       sTwitterStream.setOAuthAccessToken(AccessTokenManager.getAccessToken());
       sTwitterStream.user();
     }
     return;
   }
   sTwitterStream = getTwitterStream();
   sUserStreamAdapter = new MyUserStreamAdapter();
   sTwitterStream.addListener(sUserStreamAdapter);
   sTwitterStream.addConnectionLifeCycleListener(new MyConnectionLifeCycleListener());
   sTwitterStream.user();
   BasicSettings.resetNotification();
 }
  public static void stopStreaming() {
    if (sTwitterStream == null) {
      return;
    }
    BasicSettings.setStreamingMode(false);
    sUserStreamAdapter.stop();
    new AsyncTask<Void, Void, Void>() {
      @Override
      protected Void doInBackground(Void... params) {
        sTwitterStream.cleanUp();
        sTwitterStream.shutdown();
        return null;
      }

      @Override
      protected void onPostExecute(Void status) {}
    }.execute();
  }