iOS实现多代理的方法及实例代码

 @method
 @brief 注册一个监听对象到监听列表中
 @discussion 把监听对象添加到监听列表中准备接收相应的事件
 @param delegate 需要注册的监听对象
 @param queue 通知监听对象时的线程
 @result
 */
- (void)addDelegate:(id)delegate delegateQueue:(dispatch_queue_t)queue;

- (void)onReceiveRedPointMsg:(NSNotification *)noti {
  NSDictionary *info = noti.userInfo;
  if ([info[@"type"] integerValue] == 21) {
    <#code#>
  }
}

- (void)redPointManagerDidReceive:(RedPointModel *)redPointModel {
  if (redPointModel.type == 21) {
    <#code#>
  }
}

class WeakObjectBridge : NSObject {
  weak var weakObject : AnyObject&＃63;
  override init() {
    super.init()
  }
  init(object:AnyObject&＃63;) {
    super.init()
    weakObject = object
  }
}

func operatDelegate(cb: @escaping (_ delegate:AnyObject&＃63;) -> ()){
    for weakObjectBridge in self.delegateBridges {
      DispatchQueue.main.async {
        cb(weakObjectBridge.weakObject)
      }
    }
  }

func action() {
    operatDelegate { (delegate) in
      if let myDelegate = delegate as&＃63; SomeManagerDelegate {
        myDelegate.callBack()
        myDelegate.callback&＃63;(msg: ["msg":"hello world!"])
      }
    }
  }