NotificationCenter

extension NotificationCenter
  • observe(name:object:queue:using:)

    添加观察 使用该方式无需手动removeObserver， 但需要将返回的实例保存到属性上去

    Declaration

    Swift

    public func observe(name: NSNotification.Name?, object obj: Any?, queue: OperationQueue?, using block: @escaping (Notification) -> Void) -> NotificationToken
    Parameters
    name

    name
    obj

    obj
    queue

    queue
    block

    block
    Return Value

    NotificationToken