不可能在2个视图控制器之间传递UIImage（无故事板）

Question

在第一个ViewController（AViewController）中，我设置了相机。当图片被捕获时，我呈现另一个包含UIImageView的ViewController（BViewController）。问题是BViewController中的UIImageView没有显示在AViewController中捕获的图片。我指定我不使用故事板。

有没有人有想法解决这个失败？我错过了什么 ？感谢您的帮助！

class AViewController: UIViewController { 

    ... 

    func capture(){ 

    if let videoConnection = stillImageOutput!.connection(withMediaType: AVMediaTypeVideo) { 
       videoConnection.videoOrientation = AVCaptureVideoOrientation.portrait 
       stillImageOutput?.captureStillImageAsynchronously(from: videoConnection, completionHandler: {(sampleBuffer, error) in 
     if (sampleBuffer != nil) { 
      let imageData = AVCaptureStillImageOutput.jpegStillImageNSDataRepresentation(sampleBuffer) 
      let dataProvider = CGDataProvider(data: imageData as! CFData) 
      let cgImageRef = CGImage(jpegDataProviderSource: dataProvider!, decode: nil, shouldInterpolate: true, intent: CGColorRenderingIntent.defaultIntent) 

      let imageSaved = UIImage(cgImage: cgImageRef!, scale: 1.0, orientation: UIImageOrientation.right) 

      self.present(BViewController(), animated: false, completion: { Void in 
       BViewController().integrate(image: imageSaved) 
      })     
     }    
    } 
    } 
} 

=========================================== =====================

class BViewController : UIViewController { 

    let imageView = UIImageView() 

    override func viewDidLoad() { 
     super.viewDidLoad() 

     imageView.frame = view.bounds 
     imageView.contentMode = .scaleAspectFill 
     imageView.clipsToBounds = true 
     view.addSubview(imageView) 

    } 

    func integrate(image: UIImage){ 
     imageView.image = image 
    } 
} 

Answer 1

self.present(BViewController(), animated: false, completion: { Void in 
    BViewController().integrate(image: imageSaved) 
}) 

短语BViewController()指 “建立一个完全新的视图控制器”。但你说了两遍！所以你呈现的视图控制器（第一行）和你给图像的视图控制器（第二行）是两个完全不同的视图控制器。

Answer 2

我终于与马特的帮助下固定它：

class AViewController: UIViewController { 

    func capture(){ 
     ... 
     let destinationVC = BViewController() 
     destinationVC.image = imageSaved 
     self.present(destinationVC, animated: false, completion: nil) 
    } 
} 

//===================================================== 

class BViewController : UIViewController { 

    var image = UIImage() 
    let imageView = UIImageView() 

    override func viewDidLoad() { 
     super.viewDidLoad() 

     imageView.frame = view.bounds 
     imageView.image = image 
     imageView.contentMode = .scaleAspectFill 
     imageView.clipsToBounds = true 
     view.addSubview(imageView) 

    } 
}