// Methods which emulate android's Handler and Message methods protected void handleMessage(Message msg) { Object[] response; switch (msg.what) { case SUCCESS_MESSAGE: response = (Object[]) msg.obj; if (response != null && response.length >= 3) { onSuccess((Integer) response[0], (Header[]) response[1], (byte[]) response[2]); } else { Log.e(LOG_TAG, "SUCCESS_MESSAGE didn't got enough params"); } break; case FAILURE_MESSAGE: response = (Object[]) msg.obj; if (response != null && response.length >= 4) { onFailure( (Integer) response[0], (Header[]) response[1], (byte[]) response[2], (Throwable) response[3]); } else { Log.e(LOG_TAG, "FAILURE_MESSAGE didn't got enough params"); } break; case START_MESSAGE: onStart(); break; case FINISH_MESSAGE: onFinish(); break; case PROGRESS_MESSAGE: response = (Object[]) msg.obj; if (response != null && response.length >= 2) { try { onProgress((Integer) response[0], (Integer) response[1]); } catch (Throwable t) { Log.e(LOG_TAG, "custom onProgress contains an error", t); } } else { Log.e(LOG_TAG, "PROGRESS_MESSAGE didn't got enough params"); } break; case RETRY_MESSAGE: onRetry(); break; } }