hanleAdEvent function
处理广告事件
Implementation
void hanleAdEvent(dynamic data, OnAdEventListener listener) {
  if (data != null) {
    AdEvent adEvent = AdEvent.fromJson(data);
    listener.call(adEvent);
  }
}处理广告事件
void hanleAdEvent(dynamic data, OnAdEventListener listener) {
  if (data != null) {
    AdEvent adEvent = AdEvent.fromJson(data);
    listener.call(adEvent);
  }
}