我正在尝试从用户的手机中选择一个图像,并使用所述图像更新图像视图。
我遇到的问题是它不会更新图像。当我添加断点并命中断点时,它确实到达了那里,并且图像视图可以更改图像,因为我尝试在其他地方手动更改它。
但是当我需要它的时候,它却拒绝工作。
我的图片视图:
lazy var profilePictureImageView: UIImageView = {
let imageView = UIImageView()
imageView.image = UIImage(named: "DefaultUser")
imageView.translatesAutoresizingMaskIntoConstraints = false
imageView.contentMode = .scaleAspectFill
imageView.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(handleSelectProfilePicture)))
imageView.isUserInteractionEnabled = true
return imageView
}()
通过在设备上选择一张照片来更新图像的代码:
import UIKit
extension ProfileVC: UIImagePickerControllerDelegate, UINavigationControllerDelegate {
func handleSelectProfilePicture() {
let picker = UIImagePickerController()
picker.delegate = self
picker.allowsEditing = true
present(picker, animated: true, completion: nil)
}
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 {
profilePictureImageView.image = selectedImage
}
dismiss(animated: true, completion: nil)
}
func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
dismiss(animated: true, completion: nil)
}
}
编辑我发现的一件事是,如果我在不同的VC上用不同的图像视图尝试它,它会像预期的那样工作。我能看到的两个VC之间唯一的主要区别是我希望它能工作,但不会同时扩展'UIPickerViewDelegate‘和'UIPickerViewDataSource’。会有冲突吗?
https://stackoverflow.com/questions/42703795
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