如何从UIImagePickerController获取图像文件名？

Question

我没有从照片库中获取图像名称。这里的任何人都知道获取图像名称的正确方法吗？

注意：PHAsset.fetchAssets(withALAssetURLs: [imageURL], options: nil)这是不推荐使用的。

只有斯威夫特

谢谢

Answer 1

我找到了一个方法

if let asset = info["UIImagePickerControllerPHAsset"] as? PHAsset{
            if let fileName = asset.value(forKey: "filename") as? String{
            print(fileName)
            }
        }

这将返回照片库中的实际文件名。

Answer 2

你的意思是图像文件名？如果是这样，这应该对你有帮助。在你的UIImagePickerControllerDelegate中：

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
    guard let fileUrl = info[UIImagePickerControllerImageURL] as? URL else { return }
    print(fileUrl.lastPathComponent)
}

Answer 3

尝试使用以下代码

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

    // Other Stuff
}

Answer 4

如果您没有授予访问照片库的权限，UIImagePickerControllerPHAsset就是nil。操作系统不会自动询问，仍然会让你访问该文件（我不知道这背后的逻辑是什么！）但是PHAsset是信息词典将是零！

Answer 5

适用于iOS 12的更新，Swift 4，

这将直接为您提供文件名和文件扩展名

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {

    guard let fileUrl = info[UIImagePickerController.InfoKey.imageURL] as? URL else { return }
    print(fileUrl.lastPathComponent) // get file Name
    print(fileUrl.pathExtension)     // get file extension
    dismiss(animated: true, completion: nil)
}

Answer 6

请试试这个。

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)
}