方法不会覆盖任何方法从它的超类集<NSObject>

Question

我正在看一个项目，我在几年前在Swift 1中。在将我的代码转换为Swift 3语法之后，我注意到一个错误，它说Method does not override any method from its superclass。我知道它是因为Set是旧的语法，但我用什么替换它？这是该行：

override func touchesBegan(_ touches: Set<NSObject>, with event: UIEvent) { 
    self.view.endEditing(true) 
} 

Answer 1

这种方法在斯威夫特3有变化：

override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) { 
    super.touchesBegan(touches, with: event) 
} 

Reference从苹果

Answer 2

斯威夫特3

override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) { 
    super.touchesBegan(touches, with: event) 
    self.view.endEditing(true) 
}