swift - 有什么办法可以通过函数进行委托(delegate)吗？

Question

为了避免重复，你如何转换这样的东西:

 self.upperTextField.delegate = self
 self.lowerTextField.delegate = self

进入:

 func setDelegates(textField: UITextField){
        textField.delegate = self
        print("delegates set")
    }

Answer 1

您可以修改您的函数以接受一组 UITextField 对象:

func setDelegates(delegate: UITextFieldDelegate, textFields: [UITextField]) {
    for textField in textFields {
        textField.delegate = delegate
    }
    print("delegates set")
}

然后这样调用它:

setDelegates(self, textFields: [upperTextField, lowerTextField])