在 ObjectiveC 类中没有发现用 swift 类编写的选择器的已知类方法

Question

我在一个 swift 类中编写了一个类函数，然后尝试从一个 ObjectiveC 类访问相同的函数，但没有选择器“myMethodName”的已知类方法。我也做过#import "ProjectName-Swift.h"。它在 10.1 以下的 Xcode 中正常工作。请尽早帮助我。提前致谢。

import UIKit

typealias LoginCompletionHandler = (_: Bool) -> Void

class SCLoginViewController: UIViewController {

    var myLoginCompletionBlock: LoginCompletionHandler? = nil
    // MARK: - View Lifecycle
    override func viewDidLoad() {
        super.viewDidLoad()
    }

    //PRAGMA:- Class Methods
    class func showOnNavigation(navigationController:UINavigationController, completionBlock:@escaping LoginCompletionHandler) {
        let vc = SCLoginViewController.init(nibName: "SCLoginViewController", bundle: nil)
        vc.myLoginCompletionBlock = completionBlock
        navigationController.pushViewController(vc, animated: true)
    }

}


#import "LoginOptionVC.h"
#import "Project-Swift.h"

@interface LoginOptionVC () <>

@end

@implementation LoginOptionVC


- (instancetype)initWithBarButtonType:(BarButtonType)btnType showClubLogo:(BOOL)showLogo onCompletion:(CompletionHandler) completionBlock {

    self = [[ClubLoginOptionVC alloc]initWithNibName:@"ClubLoginOptionVC" bundle:nil];

    if (self) {
        self.myCompletionBlock = completionBlock;
    }

    return self;
}


#pragma mark - View LifeCycle
- (void)viewDidLoad {
    [super viewDidLoad];
- (IBAction)clickLogin:(id)sender {
    [SCLoginViewController showOnNavigationWithNavigationController:self.navigationController completionBlock:^(BOOL isSuccess) {
        if (isSuccess) {
            NSLog(@"logged in ");
        }

        if (self.myCompletionBlock) {
            self.myCompletionBlock(isSuccess);
        }
    }];
}
}

Answer 1

除了 Scriptable 的答案之外。如果你想将类中的所有函数暴露给 Objective-C。然后添加@objcMembers属性。

@objcMembers class MyController: UIViewController {
   class func showOnNavigation(navigationController:UINavigationController, completionBlock:@escaping LoginCompletionHandler) {

   }
}

通过在类中添加@objcMembers属性，您无需@objc在函数中添加属性。

Answer 2

将 @objc 属性添加到 func 以将 Swift 代码公开给 Objective-C

@obj class func showOnNavigation(navigationController:UINavigationController, completionBlock:@escaping LoginCompletionHandler)