相机拍摄的图像未显示在图像视图中

Question

I am having an issue while displaying camera captured image in an image view where delegates are set and being called "didFinishPickingMediaWithInfo".

I have two buttons for the user interaction (camera picture & from gallery), once I take picture from camera and then select any other image from gallery; the camera picture taken earlier is shown for a second. I tried searching a lot but no luck so far.

Can anyone please advise what am I missing. Following is the code for reference.

 @IBAction func cameraButtonPressed(_ sender: UIButton) {

    self.openCamera()
  }

  @IBAction func galleryButtonPressed(_ sender: UIButton) {

    self.openGallary()

  }

  override func viewDidLoad() {
    super.viewDidLoad()

    initialLayout()
  }

  override func viewWillAppear(_ animated: Bool) {

    self.lblPreview.isHidden = true
    self.imageTake.isHidden = true
    self.uploadButtonOutlet.isHidden = true
  }

  //
  //MARK: - Internal Methods
  func initialLayout() {

    self.cameraButtonOutlet.layer.cornerRadius = 20
    self.galleryButtonOutlet.layer.cornerRadius = 20
    self.uploadButtonOutlet.layer.cornerRadius = 20

  }


//MARK: - Open the camera
  func openCamera(){

    if(UIImagePickerController .isSourceTypeAvailable(UIImagePickerController.SourceType.camera)){

      imagePicker.sourceType = UIImagePickerController.SourceType.camera
      //If you dont want to edit the photo then you can set allowsEditing to false
      imagePicker.allowsEditing = true
      imagePicker.delegate = self
      imagePicker.cameraCaptureMode = .photo
      imagePicker.cameraDevice = .rear
      self.present(imagePicker, animated: true, completion: nil)
    }
    else{
      let alert  = UIAlertController(title: "Warning", message: "You don't have camera", preferredStyle: .alert)
      alert.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
      self.present(alert, animated: true, completion: nil)
    }
  }

  //MARK: - Choose image from camera roll

  func openGallary(){

    imagePicker.sourceType = UIImagePickerController.SourceType.photoLibrary
    imagePicker.allowsEditing = true
    imagePicker.delegate = self
    self.present(imagePicker, animated: true, completion: nil)
  }


extension UploadTimesheetViewController: UINavigationControllerDelegate, UIImagePickerControllerDelegate {

  func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info:  [UIImagePickerController.InfoKey : Any]) {

    if let editedImage = info[UIImagePickerController.InfoKey.editedImage] as? UIImage{

      self.lblPreview.isHidden = false
      self.imageTake.isHidden = false
      self.uploadButtonOutlet.isHidden = false
      DispatchQueue.main.asyncAfter(deadline: .now() + 1.0, execute: {
        self.imageTake.image = editedImage
        self.imageTake.setNeedsLayout()
      })

      // self.imageTake.image = editedImage
    }

    //Dismiss the UIImagePicker after selection
    picker.dismiss(animated: true, completion: nil)
  }

  func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {

    picker.isNavigationBarHidden = false
    self.dismiss(animated: true, completion: nil)
  }
}

Answer 1

Update your delegate method like this,

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {

    var finalImage:UIImage?

    if let image = info[UIImagePickerController.InfoKey.editedImage] as? UIImage {
        finalImage = image
    }else {
        finalImage = info[UIImagePickerController.InfoKey.originalImage] as? UIImage
    }

    self.lblPreview.isHidden = false
    self.imageTake.isHidden = false
    self.uploadButtonOutlet.isHidden = false
    self.imageTake.image = finalImage

    //Dismiss the UIImagePicker after selection
    picker.dismiss(animated: true, completion: nil)

}

Answer 2

Sorry for the delayed response. Just updating the answer so if anyone is having the same issue should know what was the actual problem.

Once picker is dismissed a viewwillappear will be called where I have hid the image view and hence the reason it was not displaying it for the first time.

If I remove the code from viewwillappear and add that properties code to viewedload then all works fine.

The issue was once the picker is dismissed, viewillapear was called and that was creating the issue.