我正在尝试将值从快速类传递给目标C类，但出现错误。错误是

  

“由于未捕获的异常'NSInvalidArgumentException'而终止应用程序，原因：'-[   MainViewController childviewcontrollerResponseWithAsset：]：无法识别的选择器已发送到实例0x7f969a133c00“

childviewcontroller swift类：

@objc protocol childviewcontrollerDelegate
{
func childviewcontrollerResponse(asset:AVAsset)
}

class childviewcontroller:UIViewController
{
@objc var delegate: childviewcontrollerDelegate?
@objc var asset:AVAsset!

@objc func apply() {
self.delegate?.childviewcontrollerResponse(asset: self.Video())

//dismiss view
self.navigationController?.popViewController(animated: false)
}

}

MainViewController目标C类：

#import "Project-Swift.h"
@interface MainViewController()<childviewcontrollerDelegate>
{

-(IBaction)Buttonpressed:(UIButton *)sender{

 uistoryboard *storyboard = [uistoryboard storyboardWithName:@"Main" bundle:nil];
 childviewcontroller *vc = (childviewcontroller*)[storyboard instantiateViewControllerWithIdentifier:@"childviewcontroller"];
 AVAsset *asset = self.originalVideoAsset;
 vc.asset = asset;
 vc.delegate = self;
 [self.navigationController pushViewController:vc animated:YES];

 }

 // Define Delegate Method
 -(void)childviewcontrollerResponse:(AVAsset*)asset
 {
 self.originalVideoAsset = asset;
 }

}

我将如何解决此问题或我错了什么？