相機照片選擇在Swift中不起作用

爲什麼當用戶拍攝照片並點擊使用照片按鈕時不會調用第二個功能？視圖被解散，但是print語句不起作用，函數沒有被調用。相機照片選擇在Swift中不起作用

@IBAction func openCamera(_ sender: UIBarButtonItem) 
    { 
     if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.camera) { 
      let imagePicker = UIImagePickerController() 
      imagePicker.delegate = self 
      imagePicker.sourceType = UIImagePickerControllerSourceType.camera; 
      imagePicker.allowsEditing = false 
      self.present(imagePicker, animated: true, completion: nil) 
     } 
    } 

func imagePickerController(picker: UIImagePickerController, didFinishPickingImage image: UIImage!, editingInfo: [NSObject : AnyObject]!) { 
     print("made it") 
     createImage(image: image) 
     self.dismiss(animated: true, completion: nil); 
    }

來源

2017-01-19 Steve

您是否使視圖代表？你有** imagePicker.delegate = self ** someplace（可能viewDidLoad）？ – dfd

第一種方法@dfd – Steve

對不起，錯過了。我看到的唯一的另一件事是這是你的第二個覆蓋。你在使用Swift 3嗎？如果是這樣，它是** func imagePickerController（_ picker：UIImagePickerController，didFinishPickingMediaWithInfo info：[String：Any]）{** – dfd

使用Swift 3，這裏是我的。我的代碼有（1）選擇視圖控制器，它使用UIImagePickerController來使用相機或從相機膠捲中選擇，然後（2）續集到編輯視圖控制器，我將按鈕的代碼除去，如我沒有使用IB。

class SelectViewController: UIViewController { 

    // selection and pass to editor 

    let picker = ImagePickerController() 
    var image = UIImage() 

    override func viewDidLoad() { 
     super.viewDidLoad() 
     picker.delegate = self 
    } 

extension SelectViewController: UIImagePickerControllerDelegate, UINavigationControllerDelegate { 

    // MARK: Camera App 

    func openCameraApp() { 
     if UIImagePickerController.availableCaptureModes(for: .rear) != nil { 
      picker.allowsEditing = false 
      picker.sourceType = UIImagePickerControllerSourceType.camera 
      picker.cameraCaptureMode = .photo 
      picker.modalPresentationStyle = .fullScreen 
      present(picker, 
        animated: true, 
        completion: nil) 
     } else { 
      noCamera() 
     } 
    } 
    func noCamera(){ 
     let alertVC = UIAlertController(
      title: "No Camera", 
      message: "Sorry, this device has no camera", 
      preferredStyle: .alert) 
     let okAction = UIAlertAction(
      title: "OK", 
      style:.default, 
      handler: nil) 
     alertVC.addAction(okAction) 
     present(
      alertVC, 
      animated: true, 
      completion: nil) 
    } 

    // MARK: Photos Albums 

    func showImagePicker() { 
     picker.allowsEditing = false 
     picker.sourceType = .photoLibrary 
     present(picker, 
       animated: true, 
       completion: nil) 
     picker.popoverPresentationController?.sourceView = self.view 
    } 
    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) { 
     let chosenImage = info[UIImagePickerControllerOriginalImage] as! UIImage 
     image = chosenImage 
     self.performSegue(withIdentifier: "ShowEditView", sender: self) 
     dismiss(animated: true, completion: nil) 
    } 
    func imagePickerControllerDidCancel(_ picker: UIImagePickerController) { 
     dismiss(animated: false, completion: nil) 
    } 

    // MARK: Seque to EditViewController 

    override func prepare(for segue: UIStoryboardSegue, sender: Any?) { 
     if segue.identifier == "ShowEditView" { 
      if let vc = segue.destination as? EditViewController { 
       vc.image = image 
      } 
     } 
    } 

}

如果不segueing另一個VC，除去.performSegue通話和下面的最終成績代碼：符號。（相機/選定的圖像在圖片變種）

來源

2017-01-19 21:10:11 dfd

相機照片選擇在Swift中不起作用

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