ios - iOS Swift imagePickerController无法调用

class MyPage: UIViewController,UIImagePickerControllerDelegate,UINavigationControllerDelegate {

    var imagePicker = UIImagePickerController()
    @IBOutlet weak var selectImage: UIButton!

    override func viewDidLoad() {
        imagePicker.sourceType = .photoLibrary
        imagePicker.delegate = self
    }



   @IBAction func selectImage(_ sender: Any) {
            print("a")
            if UIImagePickerController.isSourceTypeAvailable(.photoLibrary){
                print("b")
                imagePicker.allowsEditing = false
                imagePicker.mediaTypes = UIImagePickerController.availableMediaTypes(for: .photoLibrary)!
                self.present(imagePicker, animated: true,completion: nil)
            }
    @objc func imagePickerController(picker: UIImagePickerController!, didFinishPickingImage image: UIImage!, editingInfo: NSDictionary!){
            self.dismiss(animated: true, completion: { () -> Void in
                print("dismiss")
            })

            print(image)
            selectImage.setImage(image, for: .normal)
        }
}

如果触摸按钮，则打印a和b并弹出photoLibrary

但选择照片不致电imagePickerController

选择照片后不执行任何操作

如何在Swift 4中使用ImagePicker？

最佳答案

从@objc方法中删除Delegate并且delegate方法是这个，所以用以下代码替换函数：

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any])

并使用此获取图像：

guard let selectedImage = info[UIImagePickerControllerOriginalImage] as? UIImage else {return}

关于ios - iOS Swift imagePickerController无法调用，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/51471062/