如何在不使用情节提要的情况下将数据从一个视图控制器传递到下一个

Question

我的目标是从第一个视图控制器中的照片库中选择一张图片，并在第二个视图控制器中显示它

func photoLibrary() {
    if UIImagePickerController.isSourceTypeAvailable(.photoLibrary){
        let myPickerController = UIImagePickerController()
        myPickerController.delegate = self;
        myPickerController.sourceType = .photoLibrary
        self.present(myPickerController, animated: true, completion: nil)
    }
}

这是我尝试将选择的图片保存到本地图像子视图中的地方，但出现错误：

  

发现]在发现扩展时遇到错误：错误Domain = PlugInKit代码= 13“查询已取消” UserInfo = {NSLocalizedDescription =查询已取消}

// 
var imageView = UIImageView()

let cvc = SecondViewController(collectionViewLayout: UICollectionViewFlowLayout())

func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
    if let pickedImage = info[UIImagePickerControllerOriginalImage] as? UIImage {
        imageView.contentMode = .scaleAspectFit
        imageView.image = pickedImage
        // I get the error here

        // I try to pass imageView to the other view controller's property 'imageView.'
        // It never gets to this point because of the error
        cvc.imageView = imageView
    }
    dismiss(animated: true, completion: nil)
}