在子类化时混合objective-c和swift [英] mixing objective-c and swift when subclassing

问题描述

我有一个用Swift编写的UIViewController子类，叫做'BaseViewController'。我现在有一个名为'ViewController1'的'旧'视图控制器，用Objective-C编写，我想从'BaseViewController'继承。按照其他建议我导入了'Project-Swift.h'头文件。

I've got a subclass of UIViewController written in Swift called 'BaseViewController'. I now have an 'old' view controller called 'ViewController1' written in Objective-C that I want to inherit from 'BaseViewController'. Following other advice I have imported the 'Project-Swift.h' header file.

当像这样进行子类化时出现问题

My problem occurs when subclassing like this

#import <UIKit/UIKit.h>
#import "MyProject-Swift.h"

@interface ViewController1 : BaseViewController
@end

错误是：

不能使用objc_subclassing-restricted属性对类进行子类化

Cannot subclass a class with objc_subclassing-restricted attribute

它出现在@interface ...行上。

and it appears on the @interface ... line.

推荐答案

你不能继承a Objective-C中的Swift类。

摘自使用Swift与Cocoa和Objective-C

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