Image couldn't be seen in the Image View Area in Swift - ios

Question

I have an image view in my view controller but weirdly I can't show my image inside of the imageview. It is located in the middle of the page or somewhere else in the other view controllers. My code of both image view and image picker are below.
And this is the output. Arrow image doesn' t show in expected area:
profileImageView.centerXAnchor.constraint(equalTo: view.centerXAnchor).isActive = true
profileImageView.bottomAnchor.constraint(equalTo: nameTextField.topAnchor, constant: -12).isActive = true
profileImageView.widthAnchor.constraint(equalToConstant: 150).isActive = true
profileImageView.heightAnchor.constraint(equalToConstant: 150).isActive = true
profileImageView.image = UIImage(named: "arrow_long_left")
profileImageView.translatesAutoresizingMaskIntoConstraints = false
profileImageView.contentMode = .scaleAspectFill
profileImageView.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(handleSelectProfileImageView)))
profileImageView.isUserInteractionEnabled = true
view.addSubview(profileImageView)
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
var selectedImageFromPicker: UIImage?
if let editedImage = info["UIImagePickerControllerEditedImage"] as? UIImage {
selectedImageFromPicker = editedImage
} else if let originalImage = info["UIImagePickerControllerOriginalImage"] as? UIImage {
selectedImageFromPicker = originalImage
}
if let selectedImage = selectedImageFromPicker {
profileImageView.image = selectedImage
}
dismiss(animated: true, completion: nil)
}
func handleSelectProfileImageView() {
let imagePicker = UIImagePickerController()
if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.photoLibrary) {
imagePicker.delegate = self
imagePicker.sourceType = UIImagePickerControllerSourceType.photoLibrary
//picker.mediaTypes = UIImagePickerController.availableMediaTypes(for: .photoLibrary)!
imagePicker.allowsEditing = true
self.present(imagePicker, animated: true, completion: nil)
}
/*else if (UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.camera) {
let picker = UIImagePickerController()
picker.delegate = self
picker.sourceType = UIImagePickerControllerSourceType.camera;
picker.allowsEditing = true
present(picker, animated: true, completion: nil)
}*/
}
func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
print("canceled picker")
dismiss(animated: true, completion: nil)
}

Answer 1

Your code is off here:
profileImageView.centerXAnchor.constraint(equalTo: view.centerXAnchor).isActive = true
profileImageView.bottomAnchor.constraint(equalTo: nameTextField.topAnchor, constant: -12).isActive = true
profileImageView.widthAnchor.constraint(equalToConstant: 150).isActive = true
profileImageView.heightAnchor.constraint(equalToConstant: 150).isActive = true
My guess is you want something more like this:
profileImageView.leadingAnchor.constraint(equalTo: nameTextField.trailingAnchor, constant:10).isActive = true
profileImageView.trailingAnchor.constraint(equalTo: view.trailingAnchor, constant:10).isActive = true
profileImageView.topAnchor.constraint(equalTo: nameTextField.topAnchor).isActive = true
profileImageView.bottomAnchor.constraint(equalTo: emailTextField.bottomAnchor).isActive = true
If you want to fix the width and height to 150, you'll need to adjust a bit. But, right now you're anchored to the centerX of the view, so its horizontally centered. And anchored by the bottom to the top of the nameTextField - so of course its above the nameTextField