创建通知管理类

typedef NotificationUsingBlock = Function(dynamic object);

class CZNotificationManage {

  factory CZNotificationManage() =>_getInstance();

  static CZNotificationManage get instance => _getInstance();

  static CZNotificationManage? _instance;

  CZNotificationManage._internal() {}

  static CZNotificationManage _getInstance() {
    if (_instance == null) _instance = new CZNotificationManage._internal();
    return _instance!;
  }

  /// 存储所有的通知信息
  Map<String, dynamic> _notificationInfo = Map<String, dynamic>();

  /// 存储所有的通知回调
  Map<String, NotificationUsingBlock> _notificationBlock = Map<String, NotificationUsingBlock>();

  /// 添加通知
  /// name：通知名称
  /// using：通知内容回调
  addNotification(String name, NotificationUsingBlock usingBlock) {
    _notificationInfo[name] = null;
    _notificationBlock[name] = usingBlock;
  }

  /// 发送通知
  /// name：通知名称
  /// object：通知内容
  postNotification(String name, dynamic object) {
    if (_notificationInfo.containsKey(name)) {
      _notificationInfo[name] = object;
      NotificationUsingBlock? block = _notificationBlock[name];
      if (block != null) block(object);
    }
  }

  /// 删除指定通知
  /// name：通知名称
  removeNotification(String name) {
    if (_notificationInfo.containsKey(name)) _notificationInfo.remove(name);
    if (_notificationBlock.containsKey(name)) _notificationBlock.remove(name);
  }

  /// 删除所有通知
  removeAllNotification() {
    _notificationInfo.clear();
    _notificationBlock.clear();
  }
}

使用

/// 发送通知
CZNotificationManage.instance.postNotification("CZSuperPlayerView", viewId);

/// 监听通知
CZNotificationManage.instance.addNotification("CZSuperPlayerView", (object) {
      
});

/// 移除监听
CZNotificationManage.instance.removeNotification("CZSuperPlayerView");