@Override
  protected Bitmap doInBackground(Object... params) {
    iv = (ImageView) params[0];
    thumbnailPath = (String) params[1];
    localFullSizePath = (String) params[2];
    ctx = (Context) params[3];
    remotePath = (String) params[4];
    Bitmap result = ImageUtils.decodeScaleImage(localFullSizePath, 160, 160);
    if (result == null && remotePath != null) {
      OSSData avatar = OssManager.getInstance().downLoadData(remotePath);
      try {
        byte[] data = avatar.get();
        if (data != null) {
          result = BitmapFactory.decodeByteArray(data, 0, data.length);
          ImageCache.getInstance().put(localFullSizePath, result);
          result = ImageUtils.decodeScaleImage(localFullSizePath, 160, 160);
        }

      } catch (OSSException e) {
        e.printStackTrace();
        return null;
      }
    }

    return result;
  }
  public void uploadImg(
      String dirType,
      String userId,
      String fileName,
      Bitmap bitmap,
      final ChatCallBack callback,
      boolean compress,
      String bucketName) {

    OSSBucket mBucket = ossService.getOssBucket(bucketName);
    OSSData ossData = ossService.getOssData(mBucket, userId + "/" + dirType + "/" + fileName);
    if (compress && bitmap.getByteCount() > 1024 * 100)
      ossData.setData(ImageUtils.bitmap2Bytes(bitmap, true), "img"); // 指定需要上传的数据和它的类型
    else ossData.setData(ImageUtils.bitmap2Bytes(bitmap, false), "img");
    ossData.enableUploadCheckMd5sum(); // 开启上传MD5校验
    ossData.uploadInBackground(
        new SaveCallback() {
          @Override
          public void onSuccess(String objectKey) {
            LogUtil.info(ChatManager.class, objectKey);
            callback.onSuccess();
            callback.onSuccess(objectKey);
          }

          @Override
          public void onProgress(String objectKey, int byteCount, int totalSize) {
            callback.onProgress(byteCount, totalSize);
          }

          @Override
          public void onFailure(String objectKey, OSSException ossException) {
            callback.onError(ChatManager.ERROR_OSS, ossException.getMessage());
          }
        });
  }