In modern iOS (2017),
here's actually the only way I know to save an image to the iOS photos system, and get the filename/path.
import UIKit
import Photos
func saveTheImage... () {
UIImageWriteToSavedPhotosAlbum(yourUIImage, self,
#selector(Images.image(_:didFinishSavingWithError:contextInfo:)),
nil)
}
func image(_ image: UIImage, didFinishSavingWithError error: NSError?, contextInfo: UnsafeRawPointer) {
guard error == nil else {
print("Couldn't save the image!")
return
}
doGetFileName()
}
func doGetFileName() {
let fo: PHFetchOptions = PHFetchOptions()
fo.sortDescriptors = [NSSortDescriptor(key: "creationDate", ascending: false)]
let r = PHAsset.fetchAssets(with: PHAssetMediaType.image, options: fo)
if let mostRecentThingy = r.firstObject {
PHImageManager.default().requestImageData(
for: mostRecentThingy,
options: PHImageRequestOptions(),
resultHandler: { (imagedata, dataUTI, orientation, info) in
if info!.keys.contains("PHImageFileURLKey") {
let path = info!["PHImageFileURLKey"] as! NSURL
print("Holy cow. The path is \(path)")
}
else { print("bizarre problem") }
})
}
else { print("unimaginable catastrophe") }
}
The problem with this is that it fails in racetrack conditions.
This is amazingly unwieldy, and it seems worrysome in a number of ways.
Is it really the way to go, today?
Photos ignores the option "View > Metadata > Title" in the Photos view. But you will see the titles in smart albums or standard albums, also in Recents and Imports, if "View > Metadata > Title" is enabled. If a photo has no title, the filename will be displayed instead.
A Live Photo is exported as two separate files: a still-image file and a video file. In the Photos app on your Mac, select the photos you want to export. Choose File > Export > Export Unmodified Original.
extension PHPhotoLibrary {
func save(imageData: Data, withLocation location: CLLocation?) -> Promise<PHAsset> {
var placeholder: PHObjectPlaceholder!
return Promise { fullfil, reject in
performChanges({
let request = PHAssetCreationRequest.forAsset()
request.addResource(with: .photo, data: imageData, options: .none)
request.location = location
placeholder = request.placeholderForCreatedAsset
}, completionHandler: { (success, error) -> Void in
if let error = error {
reject(error)
return
}
guard let asset = PHAsset.fetchAssets(withLocalIdentifiers: [placeholder.localIdentifier], options: .none).firstObject else {
reject(NSError())
return
}
fullfil(asset)
})
}
}
}
I think you can do this with PHPhotoLibrary
and PHObjectPlaceholder
.
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