捕獲圖像和設定它的UIImageView

我想拍攝照片，然後將其設置爲的UIImageView，從而創造了相機，我有以下代碼：捕獲圖像和設定它的UIImageView

class HomeController: BaseController, UIImagePickerControllerDelegate { 

var detector: AFDXDetector? 
var captureSession : AVCaptureSession? 
var stillImageOutput : AVCapturePhotoOutput? 
var previewLayer : AVCaptureVideoPreviewLayer? 
var camera : AVCaptureDevice! 

@IBOutlet weak var cameraBtn: UIButton! 
@IBOutlet weak var cameraView: UIView! 
@IBOutlet weak var cameraImageView: UIImageView! 

    override func viewDidLoad() { 
     super.viewDidLoad() 
     startCamera() 
    } 

    func startCamera() { 

    do { 

     captureSession = AVCaptureSession() 
     camera = AVCaptureDevice.defaultDevice(withDeviceType: .builtInWideAngleCamera, mediaType: AVMediaTypeVideo, position: .front) 
     captureSession?.sessionPreset = AVCaptureSessionPreset1280x720 

     let input = try AVCaptureDeviceInput(device: camera) 

     if (captureSession?.canAddInput(input))!{ 
      captureSession?.addInput(input) 
      stillImageOutput = AVCapturePhotoOutput() 

      if (captureSession?.canAddOutput(stillImageOutput))!{ 
       print("output added") 
       captureSession?.canAddOutput(stillImageOutput) 
       previewLayer = AVCaptureVideoPreviewLayer(session: captureSession) 
       previewLayer?.videoGravity = AVLayerVideoGravityResizeAspect 
       previewLayer?.connection.videoOrientation = AVCaptureVideoOrientation.portrait 
       cameraView.layer.addSublayer(previewLayer!) 
       captureSession?.startRunning() 
      } 
     } 

    } catch { 

    } 
} 


@IBAction func cameraBtnPressed(_ sender: Any) { 
    if (stillImageOutput?.connection(withMediaType: AVMediaTypeVideo)) != nil 
    { 
     print("video connection detected") 
    } 
} 
}

出於某種原因，打印語句「視頻連接檢測「雖然相機正在工作，但不會被調用

還有其他人知道爲什麼嗎？

來源

2017-02-09 KTOV

在captureSession？.canAddOutput（stillImageOutput）的if語句中，將captureSession？.canAddOutput（stillImageOutput）更改爲.addOutput

來源

2017-02-10 17:01:21 Tunds

捕獲圖像和設定它的UIImageView

回答

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