实例方法 'match(match:player:didChangeState:)' 几乎符合协议 'GKMatchDelegate' 的可选要求 'match(_:player:didChange:)'

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'

它让我可以将 func 设为私有，或者插入 @nonobjc 以消除警告？我应该怎么办？

Answer 1

好的，感谢 https://whosebug.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
        }

实例方法 'match(match:player:didChangeState:)' 几乎符合协议 'GKMatchDelegate' 的可选要求 'match(_:player:didChange:)'

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

swift

swift3