从Swift类访问Objective-c基类的实例变量

问题描述：

拥有Objective c基类：

Having an Objective c base class:

@interface ObjcClass : NSObject {
    NSString *aVariable_;
}

快速的子类：

class SwiftClass : ObjcClass {
    func init() {
        // aVariable_ can't be accessed here. An Objective-c derived
        // class has direct access to it's super's instance variables!
    }
}

如何访问 ObjcClass aVariable _ 来自 SwiftClass ？

答

很棒的查询。我们努力完成这项工作。我找到的唯一可行解决方案

Great query. We have tried to hard to get this done. The only working solution I found

使用 self.valueForKey（aVariable _）获取价值

使用设置值self.setValue（新值，forKey：aVariable _）

希望有所帮助。在不改变超类的情况下可能的解决方案。

Hope that helps. Possible solution without altering super class.

从Swift类访问Objective-c基类的实例变量

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