private void OnUpdate(bool excAllRequest) { // 记录一下网络繁忙号码 lastBusyNumber = busyNumber; if (business != null) { business.Update(); } UpdateResponse(); UpdateRequest(excAllRequest); // 网络繁忙号码发生了变化, 需要调用网络繁忙的回调函数处理一些事情 if (lastBusyNumber != busyNumber) { CallBusyDelegate(); } }