从 swift 中的图库中选择照片不起作用

Question

在我的应用程序中，我有一个 "addImgBtn" 应该让用户从他的照片中选择图像。我还有 "profileImg" 存储一些临时图像。

当我点击 "addImg" 按钮时，它会显示所有照片，但是当我点击 "Choose" 时，它不会将临时图片替换为所选图片，这里是我的代码：

class myClass: UIViewController, UINavigationControllerDelegate, UIImagePickerControllerDelegate {

@IBOutlet weak var profileImg: UIImageView!
@IBOutlet weak var addImgBtn: UIButton!

@IBAction func addImgBtn(_ sender: Any) {
        imagePicker.delegate = self
        imagePicker.sourceType = UIImagePickerControllerSourceType.photoLibrary
        imagePicker.allowsEditing = true
        self.present(imagePicker, animated: true, completion: nil)
}

func imagePickerController(picker: UIImagePickerController!, didFinishPickingImage image: UIImage!, editingInfo: NSDictionary!){
    self.dismiss(animated: true, completion: { () -> Void in

    })

    profileImg.image = image
 }
}

Answer 1

你使用的imagePickerController方法有误，改成如下：

 func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
    self.dismiss(animated: true, completion: { () -> Void in
        if let image = info[UIImagePickerControllerOriginalImage] as? UIImage {
            self.profileImg.image = image
        }
    })
}

这应该有效！作为一般提示，命令单击 UIImagePickerControllerDelegate 或您在 xcode 中实现的任何委托，它会告诉您所有可用的方法等

从 swift 中的图库中选择照片不起作用

Choose photo from library in swift doesn't work

uiimagepickercontroller

uiimage

swift