swift - 实例方法 'match(match:player:didChangeState:)'几乎匹配协议(protocol) 'match(_:player:didChange:)'的可选要求 'GKMatchDelegate'

Question

我的代码中有这个函数:

func match(match: GKMatch, player playerID: String, didChangeState state: GKPlayerConnectionState) {
        if (match != self.match) {
            print("Wrong match")
            return
        }

它给了我这个警告:

Instance method 'match(match:player:didChangeState:)' nearly matches optional requirement 'match(_:player:didChange:)' of protocol 'GKMatchDelegate'

它为我提供了将func设为私有(private)的可能性，或者插入@nonobjc来消除警告？我应该怎么办？

Answer 1

好的，感谢 https://stackoverflow.com/users/1187415/martin-r (和文档)只需将其更改为:

 func match(_ match: GKMatch, player playerID: String, didChange state: GKPlayerConnectionState) {
        if (match != self.match) {
            print("Wrong match")
            return
        }