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アセットライブラリを使用してUIImagePickerControllerでファイル名を取得する方法

UIImagePickerControllerからファイル名を取得したい。 ALAssetLibraryはiOS 9で廃止されたため、使用したくありません。次のコードを使用しましたが、ファイルごとに常に「Asset.jpg」というイメージ名が返されます。

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {       
    let originalImage = (info[UIImagePickerControllerOriginalImage] as? UIImage)!
    let url = info[UIImagePickerControllerReferenceURL] as! NSURL
    imageData = UIImageJPEGRepresentation(originalImage, 100) as NSData?
    let data = UploadData()
    data.fileName = url.lastPathComponent     
    picker.dismiss(animated: true, completion: nil)
}
iosswiftuiimagepickercontroller
10
TechChain

Photos Frameworkを使用して画像の名前を取得することをお勧めします。以下は、選択した画像の名前を取得するコードです

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
    if let imageURL = info[UIImagePickerControllerReferenceURL] as? URL {
        let result = PHAsset.fetchAssets(withALAssetURLs: [imageURL], options: nil)
        let asset = result.firstObject
        print(asset?.value(forKey: "filename"))

    }

    dismiss(animated: true, completion: nil)
}
19
Rajat

IOS 11より前

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
    if let imageURL = info[UIImagePickerControllerReferenceURL] as? URL {
        let result = PHAsset.fetchAssets(withALAssetURLs: [imageURL], options: nil)
        let assetResources = PHAssetResource.assetResources(for: result.firstObject!)

        print(assetResources.first!.originalFilename)
    }

    dismiss(animated: true, completion: nil)
}

IOS 11以降

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
    if let asset = info[UIImagePickerControllerPHAsset] as? PHAsset {
        let assetResources = PHAssetResource.assetResources(for: asset)

        print(assetResources.first!.originalFilename)
    }

    dismiss(animated: true, completion: nil)
}
14
Damien D.

2018年5月6日更新

強制アンラップされたオプションは時々nilを返します。ユーザーが写真ライブラリから画像を選択するのではなく、カメラを使用して新しい画像をキャプチャするためだと思います。 nilが表示されたときに生成された名前を返すようにコードを更新しました。

元の回答

これは、filenameキーに依存することなく機能します（オプションのオプションを強制的にアンラップする言い訳をお願いします:)）

extension MyViewController : UIImagePickerControllerDelegate, UINavigationControllerDelegate {
    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
        guard let image = info[UIImagePickerControllerEditedImage] as? UIImage else {
            DDLogDebug("No image chosen")
            return
        }

        if let url = info[UIImagePickerControllerReferenceURL] as? URL {
            let assets = PHAsset.fetchAssets(withALAssetURLs: [url], options: nil)
            if let firstAsset = assets.firstObject,
            let firstResource = PHAssetResource.assetResources(for: firstAsset).first {
                fileName = firstResource.originalFilename
            } else {
                fileName = generateNameForImage()
            }
        } else {
            fileName = generateNameForImage()
        }

        DDLogDebug("File name = \(fileName)")

        dismiss(animated: true)
    }

    func generateNameForImage() -> String {
        return "IMG_random_string"
    }

}
6
Yaiba

Swift 4

if let url = info[UIImagePickerController.InfoKey.imageURL] as? URL {
        fileName = url.lastPathComponent
        fileType = url.pathExtension
    }
3
Gulfam Khan

あなたはこれをiOS 11で試すことができます

 func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
    if let asset = info[UIImagePickerControllerPHAsset] as? PHAsset {
        if let fileName = (asset.value(forKey: "filename")) as? String {
            //Do your stuff here
        }
    }

    picker.dismiss(animated: true, completion: nil)
}

このNSPhotoLibraryUsageDescriptionをInfor.plistに追加してください。

2
Tony TRAN

コード：

func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [NSObject : AnyObject]) {
    let imageURL = info[UIImagePickerControllerReferenceURL] as NSURL
    let imageName = imageURL.path!.lastPathComponent
    let documentDirectory = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true).first as String
    let localPath = documentDirectory.stringByAppendingPathComponent(imageName)
    let image = info[UIImagePickerControllerOriginalImage] as UIImage
    let data = UIImagePNGRepresentation(image)
    data.writeToFile(localPath, atomically: true)
    let imageData = NSData(contentsOfFile: localPath)!
    let photoURL = NSURL(fileURLWithPath: localPath)
    let imageWithData = UIImage(data: imageData)!
    picker.dismissViewControllerAnimated(true, completion: nil)
}
1
IMHiteshSurani
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
    let selectedFileName = ""
    if #available(iOS 11.0, *) {
        if let imageUrl = info[.imageURL] as? URL {
            selectedFileName = imageUrl.lastPathComponent
        }
    } else {
        if let imageURL = info[.referenceURL] as? URL {
            let result = PHAsset.fetchAssets(withALAssetURLs: [imageURL], options: nil)
            if let firstObject = result.firstObject {
                let assetResources = PHAssetResource.assetResources(for: firstObject)
                selectedFileName = assetResources.first?.originalFilename
            }
        }
    }

    picker.dismiss(animated: true, completion: nil)
}
1
luhuiya

写真をインポート

func getFileName(info: [String : Any]) -> String {

    if let imageURL = info[UIImagePickerControllerReferenceURL] as? URL {
        let result = PHAsset.fetchAssets(withALAssetURLs: [imageURL], options: nil)
        let asset = result.firstObject
        let fileName = asset?.value(forKey: "filename")
        let fileUrl = URL(string: fileName as! String)
        if let name = fileUrl?.deletingPathExtension().lastPathComponent {
        print(name)
        return name
        }
    }
    return ""

}

次のように、メソッド「didFinishPickingMediaWithInfo」内で呼び出します。

let fileName = getFileName(info: info)
1
Bassant Ashraf

Swift 5、iOS 11以降

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
    let photo = info[.phAsset] as? PHAsset
    let filename = photo?.value(forKey: "filename") as! String
}
0
FunkyKat
  func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) { 

         if let asset = PHAsset.fetchAssets(withALAssetURLs: [info[UIImagePickerControllerReferenceURL] as! URL],options: nil).firstObject {              

            var resources = PHAssetResource.assetResources(for: asset)

            let orgFilename: String = ((resources[0] as? PHAssetResource)?.originalFilename)!

            print("filename:",orgFilename)
     }
    }
0
Srinivasan.M
    let fileName = (info[.imageURL] as? URL)?.lastPathComponent
0
Khaled Khaldi