ios - 无法检索文件，错误 : The file couldn’t be opened because you don’t have permission to view it

Question

我正在使用的应用程序一直运行良好。我可以从库中选择一张图片并上传到 Firebase。但是，它突然不允许我从照片库上传文件。从模拟器上看，没有问题。只有在我的手机上，我才会收到该错误。

我收到的错误是

Error Domain=NSCocoaErrorDomain Code=257 "The file “IMG_8982.JPG” couldn’t be opened because you don’t have permission to view it." 
UserInfo={NSURL=file:///var/mobile/Media/DCIM/138APPLE/IMG_8982.JPG,
NSFilePath=/var/mobile/Media/DCIM/138APPLE/IMG_8982.JPG,
NSUnderlyingError=0x12ed877f0 {Error Domain=NSPOSIXErrorDomain Code=1 "Operation not permitted"}}

这很奇怪，因为我一直在这样做，但今天突然停止工作了。

这就是我的代码的样子。

func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {

    // Clear data if picture is repicked

    imageLocalURL = nil
    imageData = nil

    imageSelected = info[UIImagePickerControllerOriginalImage] as? UIImage

    if info[UIImagePickerControllerReferenceURL] != nil {

        // Image is selected from Photo Library
        referenceURL = info[UIImagePickerControllerReferenceURL] as? NSURL

    } else {

        // Image is taken from camera
        imageData = UIImageJPEGRepresentation(imageSelected!, 1.0)

    }

    transportImage.image = imageSelected
    dismissViewControllerAnimated(true, completion: nil)

}


func saveDetails() {

    if imageSelected != nil {

           if referenceURL != nil {

                // Image is from photo library

                let assets = PHAsset.fetchAssetsWithALAssetURLs([referenceURL! as NSURL], options: nil)
                let asset = assets.firstObject
                let checkValidation = NSFileManager.defaultManager()
                asset?.requestContentEditingInputWithOptions(nil, completionHandler: { (contentEditingInput, info) in
                    self.imageLocalURL = contentEditingInput?.fullSizeImageURL

                    // I did this to check if there is a local URL and if the file exist, but it returns false
                    print(self.imageLocalURL)
                    print(checkValidation.fileExistsAtPath("\(self.imageLocalURL)"))

                    self.uploadTask = storageRef.child(filePath).putFile(self.imageLocalURL!, metadata: nil) { (metadata, error) in
                        if let error = error {
                            print("Error uploading: \(error.description)")
                            return

                        }
                    }

            } else if imageData != nil {

                let imageLocalData = UIImageJPEGRepresentation(imageSelected!, 0.8)
                let metadata = FIRStorageMetadata()
                metadata.contentType = "image/jpeg"
                uploadTask = storageRef.child(filePath).putData(imageLocalData!, metadata: metadata) { (metadata, error) in
                        if let error = error {
                            print("Error uploading: \(error)")
                            return
                        }

                }

                UIImageWriteToSavedPhotosAlbum(imageSelected!, nil, nil, nil)

            }

如果图像是从相机拍摄的，则没有问题。如果图像取自照片库，我会收到该错误。

我四处搜索并尝试了 Option+Clean 构建。我去了 Projects->derived data-> delete 我检查了编译器是默认的。

谁能帮我解决这个问题？

Answer 1

我猜您一旦超出 didFinishPickingMediaWithInfo 的范围就会被拒绝访问。

也许您可以从中提取图像，而不是保留 URL？

UIImage *image = [info valueForKey:UIImagePickerControllerOriginalImage];

编辑:

抱歉，没有注意到您使用的是 Swift，并且您已经拉取了图像。不过，我的建议仍然有效。保留图片而不是 URL，你应该没问题。