UIImagePickerController 不请求许可

Question

我在应用程序中实现了以下代码，以允许用户向应用程序添加图像。但是，用户永远不会被要求获得访问照片的权限。我在这里错过了什么？

在我的 info.plist 中，我设置了：隐私 - 照片库使用说明 = 请提供对您的照片库的访问权限

包标识符是： $(PRODUCT_BUNDLE_IDENTIFIER)

import UIKit

class NewPostXIB: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {

@IBOutlet weak var image: UIImageView!

let imagePicker = UIImagePickerController()

override func viewDidLoad() {
    super.viewDidLoad()
    imagePicker.delegate = self
}

override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
    super.touchesBegan(touches, with: event)
    self.view.endEditing(true)
}

@IBAction func closeButton(_ sender: Any) {
    dismiss(animated: false, completion: nil)
}

@IBAction func addImageButton(_ sender: Any) {
    if UIImagePickerController.isSourceTypeAvailable(.photoLibrary) {
        imagePicker.allowsEditing = true
        imagePicker.sourceType = .photoLibrary
        present(imagePicker, animated: true, completion: nil)
        }
}

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
    if let pickedImage = info[UIImagePickerControllerEditedImage] as? UIImage {
        image.contentMode = .scaleAspectFill
        image.image = pickedImage
    }
    dismiss(animated: false, completion: nil)
}

func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
    dismiss(animated: true, completion: nil)
}

Answer 1

添加以下函数解决了问题：

 func checkPermission() {
    let photoAuthorizationStatus = PHPhotoLibrary.authorizationStatus()
    switch photoAuthorizationStatus {
    case .authorized:
        present(imagePicker, animated: true, completion: nil)
        print("Access is granted by user")
    case .notDetermined:
        PHPhotoLibrary.requestAuthorization({
            (newStatus) in
            print("status is \(newStatus)")
            if newStatus ==  PHAuthorizationStatus.authorized {
                /* do stuff here */
                self.present(self.imagePicker, animated: true, completion: nil)
                print("success")
            }
        })
        print("It is not determined until now")
    case .restricted:
        // same same
        print("User do not have access to photo album.")
    case .denied:
        // same same
        print("User has denied the permission.")
    }
}

Answer 2

答案很简单：这是自 iOS 11 以来的正常行为，因为 UIImagePickerController 在单独的进程中运行，因此对于只读访问，您不需要任何特殊权限。

Answer 3

根据apple documentation

Note

When using the UIImagePickerController to bring up the user's photo library, your app doesn't need to request permission explicitly.

照片会在需要时自动提示用户请求授权。

UIImagePickerController 不请求许可

UIImagePickerController not asking for permission

info.plist

uiimagepickercontroller

ios

swift