PHPhotoLibrary+SaveImage - save image with Photos Framework swift 3

PHPhotoLibrary+SaveImage

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)
            }
        })
    }
}

how to same image to defult camera roll . when gave title it creating new album with camera roll

Fun iOS 13 bug, smaller png images with transparency (maybe around under 1024x1024) save as jpegs instead.

can't call this extension inside of a viewController. I'm getting this error 'NSInternalInconsistencyException', reason: '-[PHPhotoLibrary init] unsupported'. any suggestion?

can't call this extension inside of a viewController. I'm getting this error 'NSInternalInconsistencyException', reason: '-[PHPhotoLibrary init] unsupported'. any suggestion?

Getting the same issue here

i have not tried this actual extension code, but i was getting the error 'NSInternalInconsistencyException', reason: '-[PHPhotoLibrary init] unsupported'. and the reason was that i was trying to do "var library: PHPhotoLibrary = PHPhotoLibrary()" instead of using the PHPhotoLibrary.shared(). Maybe not the reason y'all are having the issue, but i'm posting this here because i was getting that same error and resolved it by not doing that.

Really helpful, thanks a lot for shearing