ios - 从 imagePickerController 选择照片后如何更改标题单元格中的 imageView？

Question

我在 Collection View 中有一个自定义标题单元格。下面是我如何从标题中的 url 设置图像

    let profileImage: UIImageView = {
    let image = UIImageView()
    image.contentMode = .scaleAspectFill
    image.layer.cornerRadius = 42
    image.layer.masksToBounds = true
    return image
}()

    var userInfo: CauNguyenUserInfoModel?{
    didSet{
        if let profileImageUrl = userInfo?.profileImageUrl {
            if let imageUrl = URL(string: profileImageUrl) {
                profileImage.sd_setImage(with: imageUrl, placeholderImage: #imageLiteral(resourceName: "default_avatar"), options: [.continueInBackground, .progressiveDownload], completed: nil)
            }
        }
    }
}

然后，我使用协议(protocol)和委托(delegate)将操作从 header 类中的按钮传递到 Collection View 类，并使用 UIImagePickController 从用户设备选择不同的图像

这是来 self 的 Collection View Controller 的函数，而不是来自 header 类的函数

 func changeProfileImageBtnPressed() {
    let imagePickerController = UIImagePickerController()
    imagePickerController.delegate = self
    imagePickerController.allowsEditing = true
    present(imagePickerController, animated: true, completion: nil)
}

并使用此函数获取图像文件

    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
    if let editedImage = info["UIImagePickerControllerEditedImage"] as? UIImage {
        print(editedImage)
    }
    dismiss(animated: true, completion: nil)
}

我的问题是，当用户从他的设备中选择图像并且我有图像文件后，如何使用该图像更改 header 类中的图像？我将选择器函数放入我的 Collection View Controller 中。

Answer 1

给你。

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String: Any]) {
    var newImage: UIImage?
    if let editedImage = info[UIImagePickerControllerEditedImage] as? UIImage {
        newImage = editedImage
    } else if let originalImage = info[UIImagePickerControllerOriginalImage] as? UIImage {
        newImage = originalImage
    }
    imageView.image = image
    picker.dismiss(animated: true)
}