UIImagePickerController：没有调用 didFinishPickingMediaWithInfo

Question

希望你们一切都好。想知道是否有人可以帮助我理解为什么 Xcode 无法与我相处融洽......

我已将代码分成以下部分，以便我可以从 UIImagePicker 中选择个人资料照片：

1. WORKS：为 ImagePicker 和 NavigationController 分配委托类
2. 工作：实例化 UIImagePicker 变量
3. 工作：加载 ImagePickerViewController 并启用以选择图像
4. FAILS：添加了用于关闭和完成使用 UIImagePicker 拾取的附加功能，但都没有被调用？我做错了什么？

提前致谢！

---

class ProfileVC: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
var imagePicker: UIImagePickerController!

---

override func viewDidLoad() {
    super.viewDidLoad()

    imagePicker = UIImagePickerController()
    imagePicker.delegate = self
}

---

@IBAction func selectPhotoPressed(sender: UITapGestureRecognizer) {
    if UIImagePickerController.isSourceTypeAvailable(.PhotoLibrary) {
        self.imagePicker.sourceType = .PhotoLibrary
    } else {
        self.imagePicker.sourceType = .Camera
    }
    imagePicker.allowsEditing = true
    imagePicker.mediaTypes = [kUTTypeImage as String]
    self.presentViewController(imagePicker, animated: true, completion: nil)
}

---

func imagePickerControllerDidCancel(picker: UIImagePickerController) {
    self.dismissViewControllerAnimated(true, completion: nil)
}

func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo image: UIImage, editingInfo: [String : AnyObject]?) {
    headerView.profilePhoto.contentMode = .ScaleAspectFill
    headerView.profilePhoto.image = image
    imagePicker.dismissViewControllerAnimated(true, completion: nil)
    uploadImage(image)
}

Answer 1

好的，我现在似乎可以运行了，感谢您帮助确定代码是古老的；）这是现在运行的：

    func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
    let image = info[UIImagePickerControllerOriginalImage] as? UIImage
    headerView.profilePhoto.contentMode = .ScaleAspectFit
    headerView.profilePhoto.image = image
    imagePicker.dismissViewControllerAnimated(true, completion: nil)
    uploadImage(image!)
}

Answer 2

您的签名错误，但由于它是一种可选方法，因此您不会收到警告。应该是：

func imagePickerController(picker: UIImagePickerController,
          didFinishPickingMediaWithInfo info: [String : AnyObject]) {
    // Your code
}

Answer 3

正如大家所建议的，使用 didfinishpickingmediawithinfo 方法并在 swift 5、iOS 13 中提取图像，使用 info 字典

func imagePickerController(picker: UIImagePickerController,
                           didFinishPickingMediaWithInfo info: [String : AnyObject]) {
  imageView.image = info[UIImagePickerController.InfoKey.originalImage] as? UIImage
}