ios - 从 1.1 升级到 1.2 后出现奇怪的快速错误

Question

更新之前我的项目在 swift 1.1 和 Xcode 6.1.1 上运行良好。我刚刚升级到 swift 1.2 并在我的 AppDelegate 中遇到一个奇怪的错误

 func application(application:UIApplication, didReceiveRemoteNotification userInfo:NSDictionary)

并且还在从 UITextFieldDelegate 派生的类中

func textFieldDidBeginEditing(textField: UITextField!) -> Bool // called textfield for locationField clicked

顺便说一句

Objective-C method 'application:didReceiveRemoteNotification:' provided by method 'application(:didReceiveRemoteNotification:)' conflicts with optional requirement method 'application(:didReceiveRemoteNotification:)' in protocol 'UIApplicationDelegate'

textFieldDidBeginEditing 的错误是相同的:

Objective-C method 'textFieldDidBeginEditing:' provided by method 'textFieldDidBeginEditing' conflicts with optional requirement method 'textFieldDidBeginEditing' in protocol 'UITextFieldDelegate'

问题是什么？

Answer 1

只需重写方法名称(应该自行修复)，然后复制/粘贴方法中的代码。这应该有效。