如何从 Objective-C 调用 Swift 初始值设定项(具有参数)? [英] How to call Swift initializer (that has a parameter) from Objective-C?

问题描述

我有一个 Swift 课程:

I have a Swift class:

class MyTextField : NSObject, UITextFieldDelegate { 

    var myField: UITextField

    // no idea how to pass in my UITextField from Objective-C code
    init (x: UITextField) {
        myField = x;
    }
}

我添加了一个属性(未显示)以便我可以设置 myField，并且一切正常.

I have added a property (not shown) so I could set myField, and everything is working.

希望使用 init 函数，如果语法不是完全神秘的话.有什么想法吗?

Would like to use the init function, if only the syntax were not a complete mystery. Any ideas?

推荐答案

像调用 Obj-C 初始化程序一样调用它，因此对于您的示例，您可以调用 [[MyTextField alloc] initWithX:theTextField];.

Call it the same way you'd call an Obj-C initializer, so for your example, you'd call [[MyTextField alloc] initWithX:theTextField];.

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