code: public static void turnOnVIVOPush(final AVCallback<Boolean> callback) {
      com.vivo.push.PushClient.getInstance(AVOSCloud.getContext()).turnOnPush(new com.vivo.push.IPushActionListener() {
        public void onStateChanged(int state) {
          if (null == callback) {
            AVException exception = null;
            if (0 != state) {
              exception = new AVException(AVException.UNKNOWN, "VIVO server internal error, state=" + state);
            }
            callback.internalDone(null == exception, exception);
          }
        }
      });
    }
docs: turn on VIVO push.