【发布时间】:2016-08-18 10:27:11
【问题描述】:
我有这个功能来验证播放器,它工作得很好,直到 xcode8 beta 6:
func authenticateLocalPlayer()
{
print(#function)
// WillSignIn
self.delegate?.willSignIn?()
// The player authenticates in an asynchronous way, so we need a notification to inform when the authentication was completed successfully
// If the local player is already connected, return and notificate
if GameKitHelper.sharedGameKitHelper.localPlayer.isAuthenticated {
NotificationCenter.default.post(name: NSNotification.Name(rawValue: Constants.LocalPlayerIsAuthenticated), object: nil)
return
}
// Calling the authentication view controller
self.localPlayer.authenticateHandler = {(viewController: UIViewController?, error: NSError?) -> Void in
self.addLastError(error: error)
if (viewController != nil)
{
self.addAuthenticationViewController(authenticationViewController: viewController!)
}
// If the localPlayer authenticated successfully notificate
else if (self.localPlayer.isAuthenticated == true)
{
self.gameCenterConnected = true
print("Local player ID: \(self.localPlayer.playerID)")
print("Local player Alias: \(self.localPlayer.alias)")
NotificationCenter.default.post(name: NSNotification.Name(rawValue: Constants.LocalPlayerIsAuthenticated), object: nil)
}
// If the localPlayer failed to authenticate
else
{
self.gameCenterConnected = false
}
if (error != nil)
{
// Handle error here
}
}
}
现在我收到此错误“无法将类型 '(UIViewController?, NSError?) -> Void' 的值分配给类型 '((UIViewController?, Error?) -> Void)?” " 在这一行
self.localPlayer.authenticateHandler = {(viewController: UIViewController?, error: NSError?) -> Void in
self.addLastError(error: error)
if (viewController != nil)
我不知道发生了什么。 谁能帮帮我?
【问题讨论】:
-
如果您不理解错误消息,我强烈建议您使用代码完成重新键入函数以获得正确的签名。
-
我知道了,我只是没有正确阅读错误消息,我认为它与此github.com/apple/swift-evolution/blob/master/proposals/… 有关,并在看到答案时试图弄清楚如何解决它很明显。
标签: swift3 xcode8-beta6