objective-c - 如何在 Swift 中覆盖 Objective-C 的只读属性？

Question

在 objective-c 中是这样定义的:

@interface AFHTTPRequestOperation : AFURLConnectionOperation

@property (readonly, nonatomic, strong) id responseObject;

如何给这个属性赋值？

我想模拟此属性以备后用。所以我需要在 Swift 中覆盖我自己的 responseObject 。任何想法如何做到这一点？我可以继承、扩展或其他任何东西。唯一的问题是它必须符合 AFHTTPRequestOperation 的类型。

class MyRequestOperation: AFHTTPRequestOperation {

    override var responseObject: [String: AnyObject]
}

它产生一个错误:

Getter for responseObject with Objective-C selector responseObject conflicts with getter for responseObject from superclass AHTTPRequestOperation with the same Objective-C selector

Answer 1

所以，答案很简单，正如@Atul Mishra 所说:

class MyRequestOperation: AFHTTPRequestOperation {

    var myOverridenResponseObject: AnyObject?

    override var responseObject: AnyObject? {

        get {
            return myOverridenResponseObject
        }

        set {
            myOverridenResponseObject = newValue
        }
    }
}