Created
December 29, 2016 09:27
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PHPhotoLibrary+SaveImage - save image with Photos Framework swift 3
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import UIKit | |
import Photos | |
extension PHPhotoLibrary { | |
// MARK: - PHPhotoLibrary+SaveImage | |
// MARK: - Public | |
func savePhoto(image:UIImage, albumName:String, completion:((PHAsset?)->())? = nil) { | |
func save() { | |
if let album = PHPhotoLibrary.shared().findAlbum(albumName: albumName) { | |
PHPhotoLibrary.shared().saveImage(image: image, album: album, completion: completion) | |
} else { | |
PHPhotoLibrary.shared().createAlbum(albumName: albumName, completion: { (collection) in | |
if let collection = collection { | |
PHPhotoLibrary.shared().saveImage(image: image, album: collection, completion: completion) | |
} else { | |
completion?(nil) | |
} | |
}) | |
} | |
} | |
if PHPhotoLibrary.authorizationStatus() == .authorized { | |
save() | |
} else { | |
PHPhotoLibrary.requestAuthorization({ (status) in | |
if status == .authorized { | |
save() | |
} | |
}) | |
} | |
} | |
// MARK: - Private | |
fileprivate func findAlbum(albumName: String) -> PHAssetCollection? { | |
let fetchOptions = PHFetchOptions() | |
fetchOptions.predicate = NSPredicate(format: "title = %@", albumName) | |
let fetchResult : PHFetchResult = PHAssetCollection.fetchAssetCollections(with: .album, subtype: .any, options: fetchOptions) | |
guard let photoAlbum = fetchResult.firstObject else { | |
return nil | |
} | |
return photoAlbum | |
} | |
fileprivate func createAlbum(albumName: String, completion: @escaping (PHAssetCollection?)->()) { | |
var albumPlaceholder: PHObjectPlaceholder? | |
PHPhotoLibrary.shared().performChanges({ | |
let createAlbumRequest = PHAssetCollectionChangeRequest.creationRequestForAssetCollection(withTitle: albumName) | |
albumPlaceholder = createAlbumRequest.placeholderForCreatedAssetCollection | |
}, completionHandler: { success, error in | |
if success { | |
guard let placeholder = albumPlaceholder else { | |
completion(nil) | |
return | |
} | |
let fetchResult = PHAssetCollection.fetchAssetCollections(withLocalIdentifiers: [placeholder.localIdentifier], options: nil) | |
guard let album = fetchResult.firstObject else { | |
completion(nil) | |
return | |
} | |
completion(album) | |
} else { | |
completion(nil) | |
} | |
}) | |
} | |
fileprivate func saveImage(image: UIImage, album: PHAssetCollection, completion:((PHAsset?)->())? = nil) { | |
var placeholder: PHObjectPlaceholder? | |
PHPhotoLibrary.shared().performChanges({ | |
let createAssetRequest = PHAssetChangeRequest.creationRequestForAsset(from: image) | |
guard let albumChangeRequest = PHAssetCollectionChangeRequest(for: album), | |
let photoPlaceholder = createAssetRequest.placeholderForCreatedAsset else { return } | |
placeholder = photoPlaceholder | |
let fastEnumeration = NSArray(array: [photoPlaceholder] as [PHObjectPlaceholder]) | |
albumChangeRequest.addAssets(fastEnumeration) | |
}, completionHandler: { success, error in | |
guard let placeholder = placeholder else { | |
completion?(nil) | |
return | |
} | |
if success { | |
let assets:PHFetchResult<PHAsset> = PHAsset.fetchAssets(withLocalIdentifiers: [placeholder.localIdentifier], options: nil) | |
let asset:PHAsset? = assets.firstObject | |
completion?(asset) | |
} else { | |
completion?(nil) | |
} | |
}) | |
} | |
} |
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Really helpful, thanks a lot for shearing