TangoErrorType TangoData::Initialize(JNIEnv* env, jobject activity) {
  // Initialize Tango Service.
  // The initialize function perform API and Tango Service version check,
  // the there is a mis-match between API and Tango Service version, the
  // function will return TANGO_INVALID.
  return TangoService_initialize(env, activity);
}
bool TangoData::Initialize() {
  // Initialize Tango Service.
  if (TangoService_initialize() != TANGO_SUCCESS) {
    LOGE("TangoService_initialize(): Failed");
    return false;
  }
  return true;
}
bool TangoInitialize(JNIEnv* env, jobject activity) {
  // Initialize Tango Service.
  // TODO(jguo): pass in env and jobject from activity.
  if (TangoService_initialize(env, activity) != TANGO_SUCCESS) {
    LOGE("TangoService_initialize(): Failed");
    return false;
  }
  return true;
}