我正在使用swift4开发一个ios应用程序。当点击个人资料图像视图时，要在图像视图上设置个人资料图像，我有点击手势调用功能。
下面是我的代码。我根据swift指南使用扩展实现了picker委托。
看到几个关于同一个问题的文档，我想我做了我必须做的。但我无法找出错误，并在imageview上设置图像。请检查我的代码。
import UIKit
import Kingfisher
import Alamofire
import Photos
class MyProfileVC: BaseNavigationVC {
@IBOutlet weak var stateMessageLabel: UILabel!
@IBOutlet weak var profileImageView: UIImageView!
@IBOutlet weak var nicknameLabel: UILabel!
@IBOutlet weak var sexImageView: UIImageView!
@IBOutlet weak var hash1Button: UIButton!
@IBOutlet weak var hash2Button: UIButton!
@IBOutlet weak var hash3Button: UIButton!
let picker = UIImagePickerController()
override func viewDidLoad() {
super.viewDidLoad()
picker.delegate = self
picker.allowsEditing = true
picker.sourceType = .photoLibrary
picker.mediaTypes = UIImagePickerController.availableMediaTypes(for: .photoLibrary)!
let tap = UITapGestureRecognizer(target: self, action: #selector(self.tappedProfileImageView))
profileImageView.addGestureRecognizer(tap)
profileImageView.isUserInteractionEnabled = true
}
@objc func tappedProfileImageView(){
openGallery()
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(false)
self.checkPermission()
//I updated this part. this code works correctly
if let imageUrl = UserInfo.shared().photoUri{
let url = URL(string: imageUrl)
profileImageView.layer.masksToBounds = false
profileImageView.clipsToBounds = true
profileImageView.layer.cornerRadius = profileImageView.frame.size.width / 2
profileImageView.contentMode = .scaleAspectFill
profileImageView.kf.setImage(with: url)
}
}
func openGallery(){
picker.sourceType = .photoLibrary
present(picker, animated: true, completion: nil)
}
func checkPermission() {
let photoAuthorizationStatus = PHPhotoLibrary.authorizationStatus()
switch photoAuthorizationStatus {
case .authorized: print("Access is granted by user")
case .notDetermined: PHPhotoLibrary.requestAuthorization({
(newStatus) in
print("status is (newStatus)")
if newStatus == PHAuthorizationStatus.authorized {
print("success") }
})
case .restricted:
print("User do not have access to photo album.")
case .denied:
print("User has denied the permission.")
}
}
}
extension MyProfileVC : UIImagePickerControllerDelegate,
UINavigationControllerDelegate{
@objc func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
if let image = info[UIImagePickerController.InfoKey.originalImage] as? UIImage{
self.profileImageView.image = image
print(info)
}
dismiss(animated: true, completion: nil)
}
func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
dismiss(animated: true, completion: nil)
}
}
问题的原因是什么。
当我打印信息时，调试区域显示如下。
[__C.UIImagePickerControllerInfoKey(_rawValue:UIImagePickerControllerReferenceURL(：资产-library://asset/asset.JPG?id=54FE2CEF-59E7-4BCC-AF84-D64C1F32E58B&ext=JPG，__C。UIImagePickerControllerInfoKey(_rawValue:UIImagePickerControllerCropRect(：NSRect:｛｛0，0｝，｛2732.000055818812182047.1787102689659｝｝，__C。UIImagePickerControllerInfoKey(_rawValue:UIImagePickerControllerEditedImage(：大小｛748560｝方向0比例1.000000，__C。UIImagePickerControllerInfoKey(_rawValue:UIImagePickerControllerMediaType(：public.image，__C。UIImagePickerControllerInfoKey(_rawValue:UIImagePickerControllerOriginalImage(：大小｛27322048｝方向0比例1.000000，__C。UIImagePickerControllerInfoKey(_rawValue:UIImagePickerControllerPHAsset(：54FE2CEF-59E7-4BCC-AF84-D64CF32E58B/L0/001媒体类型=1/4，源类型=1，(2732x2048(，创建日期=2018-09-17 02:01:23+0000，位置=0，隐藏=0，收藏夹=0，__C。UIImagePickerControllerInfoKey(_rawValue:UIImagePickerControllerImageURL(：file:///private/var/mobile/Containers/Data/Application/CD64C336-B5F1-48F6-9D54-504006ADD6E2/tmp/DD94F454-F3BE-4EF9-9F6F-0C90F61BEE19.jpeg]
这是我缺乏编程思维。虽然我从照片库中选择了一张照片，但在活动选择照片关闭后，viewWillAppear在ImageView上设置了上一张图像。