Question
Answer and Explanation
Retrieving the image name using Swift's `PhotoPicker` can be a bit indirect, as `PhotoPicker` primarily provides access to image data rather than file paths. Here’s how you can achieve this by accessing the underlying asset and its metadata:
1. Import Necessary Frameworks:
- First, make sure you import the required frameworks: `PhotosUI` and `Photos`.
import PhotosUI
import Photos
2. Implement `PHPickerViewControllerDelegate`:
- Conform your view controller or designated class to `PHPickerViewControllerDelegate` to handle the selected images.
3. Present the PhotoPicker:
- Here’s a simplified example of how to present the photo picker:
var picker = PHPickerViewController(configuration: config)
picker.delegate = self
present(picker, animated: true)
4. Extract Image Name in `picker(_:didFinishPicking:)`:
- Inside the `picker(_:didFinishPicking:)` delegate method, you'll need to access the underlying `PHAsset` of the selected item to obtain the original file name.
func picker(_ picker: PHPickerViewController, didFinishPicking results: [PHPickerResult]) {
picker.dismiss(animated: true)
guard let provider = results.first?.itemProvider else { return }
if provider.canLoadObject(ofClass: UIImage.self) {
provider.loadObject(ofClass: UIImage.self) { image, _ in
guard let image = image as? UIImage else { return }
if let assetIdentifier = results.first?.assetIdentifier{
let assets = PHAsset.fetchAssets(withLocalIdentifiers: [assetIdentifier], options: nil)
if let asset = assets.firstObject {
let assetResources = PHAssetResource.assetResources(for: asset)
let originalFilename = assetResources.first?.originalFilename ?? "unknown" //original filename
print("Original image name: \(originalFilename)")
}
}
}
}
}
5. Handling Errors:
- Ensure you handle cases where the `assetIdentifier` is not available or no `PHAssetResource` is found. The example above provides default values if an original file name is not obtainable.
Additional Notes:
- The provided `originalFilename` is the name of the image when it was first saved to the Photo Library. It may have been modified by the user.
- Make sure you are handling photo library access permissions correctly in your application.
This approach allows you to retrieve the name of the image selected using `PhotoPicker` by working with `PHAsset` and `PHAssetResource` provided by the `Photos` framework.