2

所以已经开始了一些其他线程，因为人们对此有麻烦。像这样一个：从 UIImagePickerController 获取 NSURL和这个： Firebase 存储上传在模拟器中有效，但在 iPhone 上无效

我正在尝试遵循本教程： https ://firebase.google.com/docs/storage/ios/upload-files#upload_from_a_local_file

我的视频上传工作，而不是图像。

我的视频代码很简单：

if mediaType.isEqualToString(kUTTypeMovie as String) {
        let videoURL = info[UIImagePickerControllerMediaURL] as? NSURL

        fileToUploadURL = videoURL!
    }

但我的图像代码不起作用。这就是我的结果：

        let imageUrl = info["UIImagePickerControllerReferenceURL"] as? NSURL

        let assets = PHAsset.fetchAssetsWithALAssetURLs([imageUrl!], options: nil)
        let asset = assets.firstObject
        asset?.requestContentEditingInputWithOptions(nil, completionHandler: { (contentEditingInput, info) in
            let imageFile = contentEditingInput?.fullSizeImageURL
            // now call putFile with imageFile instead of imageUrl
            self.fileToUploadURL = imageFile
        })

似乎无论我做什么，我都会遇到错误。这是我当前的错误

2016-06-25 12:45:23.695 Chain[4187:1957121] Body file is unreachable: /var/mobile/Media/DCIM/100APPLE/IMG_0027.JPG
 Error Domain=NSCocoaErrorDomain Code=257 "The file “IMG_0027.JPG”       couldn’t be opened because you don’t have permission to view it."

控制台日志

2016-06-25 12:47:59.108 链 [4187:1957121] 正文文件无法访问：/var/mobile/Media/DCIM/100APPLE/IMG_0027.JPG 错误域 = NSCocoaErrorDomain 代码 = 257“文件“IMG_0027.JPG”无法打开，因为您无权查看。” UserInfo={NSURL=file:///var/mobile/Media/DCIM/100APPLE/IMG_0027.JPG, NSFilePath=/var/mobile/Media/DCIM/100APPLE/IMG_0027.JPG, NSUnderlyingError=0x18b7ad40 {错误域=NSPOSIXErrorDomain 代码=1“不允许操作”}} 2016-06-25 12:48:02.969 链 [4187:1957659] 插件 com.swiftkey.SwiftKeyApp.Keyboard 无效 Optional(["public.image", "public.movi​​e"])信息：[“UIImagePickerControllerOriginalImage”：尺寸 {1836, 1454} 方向 0 比例 1.000000，“UIImagePickerControllerReferenceURL”：资产库：//资产/资产。

2016-06-25 13:04:05.136 Chain[4187:1957121] _BSMachError: (os/kern) 无效能力 (20) 2016-06-25 13:04:05.138 Chain[4187:1959394] _BSMachError: (os/kern ) 无效名称 (15) 2016-06-25 13:04:05.146 链 [4187:1959394] 插件 com.swiftkey.SwiftKeyApp.Keyboard 无效 2016-06-25 13:04:05.220 链 [4187:1957188​​] CFNetwork SSLHandshake 失败(-9806) 2016-06-25 13:04:05.661 Chain[4187:1957121] 正文文件无法访问：/var/mobile/Media/DCIM/100APPLE/IMG_0015.JPG 错误域=NSCocoaErrorDomain 代码=257“文件” IMG_0015.JPG”无法打开，因为您没有查看权限。” UserInfo={NSURL=file:///var/mobile/Media/DCIM/100APPLE/IMG_0015.JPG, NSFilePath=/var/mobile/Media/DCIM/100APPLE/IMG_0015.JPG, NSUnderlyingError=0x18bd4330 {错误域=NSPOSIXErrorDomain 代码=1 "不允许操作"}}

编辑：这是我的 didFinishPickingMedia：

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


    let mediaType = info[UIImagePickerControllerMediaType] as! NSString

    print ("info: \(info)")

    if mediaType.isEqualToString(kUTTypeImage as String) {
        var newImage: UIImage

        if let possibleImage = info["UIImagePickerControllerEditedImage"] as? UIImage {
            newImage = possibleImage
        }
        else if let possibleImage = info["UIImagePickerControllerOriginalImage"] as? UIImage {
            newImage = possibleImage
        }

        else {
            return
        }

      /// CAN NOT GET NSURL working, NEED TO USE NSDATA
        if let jpegData:NSData = UIImageJPEGRepresentation(newImage, 80) {
            currentMediaTypeToUpload = "img"
            fileToUploadDATA = jpegData
        }

    }


    else if mediaType.isEqualToString(kUTTypeMovie as String) {
        let videoURL = info[UIImagePickerControllerMediaURL] as? NSURL

        fileToUploadURL = videoURL!
        currentMediaTypeToUpload = "vid"
    }
4

3 回答 3

3

解决方案在这里：如何从 UIImagePickerController 获取图像的 NSURL？上传到 Firebase

应用于我们的问题：

if  let referenceUrl = info[UIImagePickerControllerReferenceURL] {

        ////
        let assetURL = NSURL(string: String(referenceUrl))
        let assets = PHAsset.fetchAssetsWithALAssetURLs([assetURL!], options: nil)
        let asset: PHAsset = assets.firstObject as! PHAsset
        let manager = PHImageManager.defaultManager()
        let requestSize =   PHImageManagerMaximumSize
        manager.requestImageForAsset(asset, targetSize: requestSize, contentMode: .AspectFit, options: nil, resultHandler: {(result, info)->Void in
            // Result is a UIImage
            // Either upload the UIImage directly or write it to a file
            let imageData = UIImageJPEGRepresentation(result!, 0.8)
            let imagePath = FIRAuth.auth()!.currentUser!.uid + "/\(Int(NSDate.timeIntervalSinceReferenceDate() * 1000)).jpg"
            print ("filePath: ", imagePath)
            let metadata = FIRStorageMetadata()
            metadata.contentType = "image/jpeg"
            self.storageRef.child(imagePath)
                .putData(imageData!, metadata: metadata) { (metadata, error) in
                    if let error = error {
                        print("Error uploading: \(error.description)")
                        return
                    }
                    self.sendMessage([Constants.MessageFields.imageUrl: self.storageRef.child((metadata?.path)!).description])
                    print("Succeded")
            }

        })
    }

有了这个解决方案，我可以将我的文件上传到 firebase。

于 2016-06-30T21:51:32.687 回答
1

NSURL从 s 返回的UIImagePickerControllers 具有 scheme assets-library://，文件系统 URL 库（包括我们的库）不能直接访问它。您必须通过Photos框架来检索内容，并将该数据写入单独的文件NSURL或将其上传到内存中。

  let assetURL = NSURL(string: "assets-library://path/to/content")
  let assets = PHAsset.fetchAssetsWithALAssetURLs([assetURL!], options: nil)
  let asset: PHAsset = assets.firstObject as! PHAsset

  let manager = PHImageManager.defaultManager()
  manager.requestImageForAsset(asset, targetSize: CGSize(width: 100.0, height: 100.0), contentMode: .AspectFit, options: nil, resultHandler: {(result, info)->Void in
    // Result is a UIImage
    // Either upload the UIImage directly or write it to a file
  })

此示例代码取自此处，作为我们的 I/O 谈话从零到应用程序的一部分：使用 Firebase 开发。

于 2016-06-26T02:57:58.157 回答
0

我不确定您究竟是如何尝试从 UIImagePickerController 实例中获取图像，但您可以实现委托并获取 UIImage 实例，然后使用“内存中”方法将其上传到 FirbaseStorage：

func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
    guard let image = info[UIImagePickerControllerOriginalImage] as? UIImage else { return }
    guard let imageData = UIImageJPEGRepresentation(image, 1.0) else { return }

    let storageRef = FIRStorage.storage().referenceForURL("gs://project-id.appspot.com")
    imagesRef.putData(imageData, metadata: nil) { metadata, error in
        ...
    }
 }
于 2016-06-25T19:43:59.190 回答