UIImagePickerController 在选择图片时冻结

Question

我正在尝试允许用户修改他们的个人资料图像。我已经实现了正确的代码，并在我的plist中输入了正确的调用。当我选择图片并选择"选择"时，我的应用程序崩溃，我将把我的代码放在下面。

import UIKit
import Firebase
class EditProfileVC: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
view.addSubview(profileImageView)
setupProfileImageView()
self.view.backgroundColor = UIColor.white
}
func setupProfileImageView() {
profileImageView.centerXAnchor.constraint(equalTo: view.centerXAnchor).isActive = true
profileImageView.topAnchor.constraint(equalTo: self.view.topAnchor, constant: 100).isActive=true
profileImageView.widthAnchor.constraint(equalToConstant: 150).isActive = true
profileImageView.heightAnchor.constraint(equalToConstant: 150).isActive = true
}
lazy var profileImageView: UIImageView = {
let imageView = UIImageView()
imageView.image = UIImage(named: "users")
imageView.translatesAutoresizingMaskIntoConstraints = false
imageView.contentMode = .scaleAspectFill
imageView.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(handleSelectProfileImageView)))
imageView.isUserInteractionEnabled = true
return imageView
}()

} 我还创建了一个扩展文件

import UIKit
extension EditProfileVC: UIImagePickerControllerDelegate,  UINavigationControllerDelegate{
@objc func handleSelectProfileImageView() {
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 {
profileImageView.image = selectedImage
}
print(info)
}
func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
print("Canceled Picker")
dismiss(animated: true, completion: nil)
}
func imagePickerController(picker: UIImagePickerController,
didFinishPickingMediaWithInfo info: [String :   AnyObject])
{
if let img = info[UIImagePickerControllerOriginalImage] as? UIImage {
profileImageView.image = img
}
}
}

在我的 Plist 中，我在使用说明中放入了隐私照片库。

当我选择我的图片并按选择更新用户个人资料图像时，它崩溃并发送错误消息，

["UIImagePickerControllerEditedImage"： size {1122， 1125} 方向 0 比例尺 1.000000， "UIImagePickerControllerImageURL"： file:///Users/zachwilcox/Library/Developer/CoreSimulator/Devices/C05956CC-616F-42FB-B067-110AF2BD7713/data/Containers/Data/Application/B386A454-C96D-447F-8FB2-5FFCCF1D1780/tmp/63AD5A2C-4214-4E45-9961-F800699B14E0.jpeg， "UIImagePickerControllerMediaType"： public.image， "UIImagePickerControllerCropRect"： NSRect： {{0， 78}， {2456.9999065657889， 2458}}， "UIImagePickerControllerReferenceURL"： assets-library://asset/asset.JPG?id=0F3CDF5B-A958-45D2-822E-571323272379&ext=JPG， "UIImagePickerControllerOriginalImage"：大小 {3024， 3780} 方向 0 比例尺 1.000000]

我不知道这意味着什么，为什么叫它或如何解决它。如果有人能帮助我理解为什么会发生这种情况，我将不胜感激！

Answer 1

您有一个重复的方法。尝试从代码中删除以下内容。

func imagePickerController(picker: UIImagePickerController,
didFinishPickingMediaWithInfo info: [String :   AnyObject])
{
if let img = info[UIImagePickerControllerOriginalImage] as? UIImage {
profileImageView.image = img
}
}

编辑：

选择映像后关闭图像选取器控制器。 包含在 didFinishPickingMediaWithInfo 方法的底部。

dismiss(animated: true, completion: nil)