Save images with phimagemanager to custom album?
Answer in Objective-C and cleaned up a bit.
__block PHFetchResult *photosAsset;
__block PHAssetCollection *collection;
__block PHObjectPlaceholder *placeholder;
// Find the album
PHFetchOptions *fetchOptions = [[PHFetchOptions alloc] init];
fetchOptions.predicate = [NSPredicate predicateWithFormat:@"title = %@", @"YOUR_ALBUM_TITLE"];
collection = [PHAssetCollection fetchAssetCollectionsWithType:PHAssetCollectionTypeAlbum
subtype:PHAssetCollectionSubtypeAny
options:fetchOptions].firstObject;
// Create the album
if (!collection)
{
[[PHPhotoLibrary sharedPhotoLibrary] performChanges:^{
PHAssetCollectionChangeRequest *createAlbum = [PHAssetCollectionChangeRequest creationRequestForAssetCollectionWithTitle:@"YOUR_ALBUM_TITLE"];
placeholder = [createAlbum placeholderForCreatedAssetCollection];
} completionHandler:^(BOOL success, NSError *error) {
if (success)
{
PHFetchResult *collectionFetchResult = [PHAssetCollection fetchAssetCollectionsWithLocalIdentifiers:@[placeholder.localIdentifier]
options:nil];
collection = collectionFetchResult.firstObject;
}
}];
}
// Save to the album
[[PHPhotoLibrary sharedPhotoLibrary] performChanges:^{
PHAssetChangeRequest *assetRequest = [PHAssetChangeRequest creationRequestForAssetFromImage:[UIImage imageWithData:imageData]];
placeholder = [assetRequest placeholderForCreatedAsset];
photosAsset = [PHAsset fetchAssetsInAssetCollection:collection options:nil];
PHAssetCollectionChangeRequest *albumChangeRequest = [PHAssetCollectionChangeRequest changeRequestForAssetCollection:collection
assets:photosAsset];
[albumChangeRequest addAssets:@[placeholder]];
} completionHandler:^(BOOL success, NSError *error) {
if (success)
{
NSString *UUID = [placeholder.localIdentifier substringToIndex:36];
self.photo.assetURL = [NSString stringWithFormat:@"assets-library://asset/asset.PNG?id=%@&ext=JPG", UUID];
[self savePhoto];
}
else
{
NSLog(@"%@", error);
}
}];
The bit at the end with the UUID was something I found on another StackOverflow thread for creating a replacement for AssetURL property from an ALAsset.
Note: See chris' comment below for more complete answer.
This is how I do:
At the top:
import Photos
var image: UIImage!
var assetCollection: PHAssetCollection!
var albumFound : Bool = false
var photosAsset: PHFetchResult!
var assetThumbnailSize:CGSize!
var collection: PHAssetCollection!
var assetCollectionPlaceholder: PHObjectPlaceholder!
Creating the album:
func createAlbum() {
//Get PHFetch Options
let fetchOptions = PHFetchOptions()
fetchOptions.predicate = NSPredicate(format: "title = %@", "camcam")
let collection : PHFetchResult = PHAssetCollection.fetchAssetCollectionsWithType(.Album, subtype: .Any, options: fetchOptions)
//Check return value - If found, then get the first album out
if let _: AnyObject = collection.firstObject {
self.albumFound = true
assetCollection = collection.firstObject as! PHAssetCollection
} else {
//If not found - Then create a new album
PHPhotoLibrary.sharedPhotoLibrary().performChanges({
let createAlbumRequest : PHAssetCollectionChangeRequest = PHAssetCollectionChangeRequest.creationRequestForAssetCollectionWithTitle("camcam")
self.assetCollectionPlaceholder = createAlbumRequest.placeholderForCreatedAssetCollection
}, completionHandler: { success, error in
self.albumFound = success
if (success) {
let collectionFetchResult = PHAssetCollection.fetchAssetCollectionsWithLocalIdentifiers([self.assetCollectionPlaceholder.localIdentifier], options: nil)
print(collectionFetchResult)
self.assetCollection = collectionFetchResult.firstObject as! PHAssetCollection
}
})
}
}
When saving the photo:
func saveImage(){
PHPhotoLibrary.sharedPhotoLibrary().performChanges({
let assetRequest = PHAssetChangeRequest.creationRequestForAssetFromImage(self.image)
let assetPlaceholder = assetRequest.placeholderForCreatedAsset
let albumChangeRequest = PHAssetCollectionChangeRequest(forAssetCollection: self.assetCollection, assets: self.photosAsset)
albumChangeRequest!.addAssets([assetPlaceholder!])
}, completionHandler: { success, error in
print("added image to album")
print(error)
self.showImages()
})
}
Showing the images from that album:
func showImages() {
//This will fetch all the assets in the collection
let assets : PHFetchResult = PHAsset.fetchAssetsInAssetCollection(assetCollection, options: nil)
print(assets)
let imageManager = PHCachingImageManager()
//Enumerating objects to get a chached image - This is to save loading time
assets.enumerateObjectsUsingBlock{(object: AnyObject!,
count: Int,
stop: UnsafeMutablePointer<ObjCBool>) in
if object is PHAsset {
let asset = object as! PHAsset
print(asset)
let imageSize = CGSize(width: asset.pixelWidth, height: asset.pixelHeight)
let options = PHImageRequestOptions()
options.deliveryMode = .FastFormat
imageManager.requestImageForAsset(asset, targetSize: imageSize, contentMode: .AspectFill, options: options, resultHandler: {(image: UIImage?,
info: [NSObject : AnyObject]?) in
print(info)
print(image)
})
}
}