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I'm creating an iOS 5 app. I want to save a photo to the device.
I want to save the photo to an album specific to my app, so I need to create the album, and then save photos to the album.
I know how to create the album:
ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
[library addAssetsGroupAlbumWithName:@"MY APP NAME" resultBlock:^(ALAssetsGroup *group) {
//How to get the album URL?
} failureBlock:^(NSError *error) {
//Handle the error
}];
I want add photos to the new album now, how do I do so? Sample code is greatly appreciated!
708
Step 1: Press and hold your finger over one photo to begin selecting photos for your album. Step 2: Once all are selected, tap on the more options menu icon (three dots in the top bar), then select Add to Album. Step 3: Tap on the album you would like to add the photos to.
In your “Settings” menu, find and tap on “Camera.” In the “Camera” menu, tap on “Formats” at the very top of the menu. Here you can select either “High Efficiency,” which will allow your iPhone to shoot and store HEIC files, or “Most Compatible,” which will have your phone capture JPEGs.
Currently, there is no way for you to select which albums are available via the Photos Widget. Instead, you rely on the Memories and “Featured Photos” albums that are available in the Photos app. Open the Photos app on your iPhone. Tap the For You tab at the bottom.
Tap Albums at the bottom of the screen. Tap , then choose New Album. Name the album, then tap Save. Tap the photos you want to add to the album, then tap Done. To create a shared album, see Share photos with Shared Albums in iCloud. Tap Library at the bottom of the screen, then view your photos by Days or All Photos.
The Recents album shows your entire collection in the order that you added them to your library. When you use iCloud Photos, the changes that you make to your albums on one device appear on your other devices too. Open Photos. Go to Albums and tap the Add button .
Go to an album, then tap the More button . Tap Sort, then choose a sorting option, like Custom Order, Oldest to Newest, or Newest to Oldest. You can share photos, videos, and albums with select people, then allow them to add their own photos, videos, and comments.
Use the Photos app to view and organize your photos in albums. If you use iCloud Photos, albums are stored in iCloud. They’re up to date and accessible on devices where you’re signed in with the same Apple ID. See Use iCloud Photos on iPhone. Tap Albums at the bottom of the screen. Tap , then choose New Album. Name the album, then tap Save.
You may use the following code just change the name of album :
__weak ALAssetsLibrary *lib = self.library;
[self.library addAssetsGroupAlbumWithName:@"My Photo Album" resultBlock:^(ALAssetsGroup *group) {
///checks if group previously created
if(group == nil){
//enumerate albums
[lib enumerateGroupsWithTypes:ALAssetsGroupAlbum
usingBlock:^(ALAssetsGroup *g, BOOL *stop)
{
//if the album is equal to our album
if ([[g valueForProperty:ALAssetsGroupPropertyName] isEqualToString:@"My Photo Album"]) {
//save image
[lib writeImageDataToSavedPhotosAlbum:UIImagePNGRepresentation(image) metadata:nil
completionBlock:^(NSURL *assetURL, NSError *error) {
//then get the image asseturl
[lib assetForURL:assetURL
resultBlock:^(ALAsset *asset) {
//put it into our album
[g addAsset:asset];
} failureBlock:^(NSError *error) {
}];
}];
}
}failureBlock:^(NSError *error){
}];
}else{
// save image directly to library
[lib writeImageDataToSavedPhotosAlbum:UIImagePNGRepresentation(image) metadata:nil
completionBlock:^(NSURL *assetURL, NSError *error) {
[lib assetForURL:assetURL
resultBlock:^(ALAsset *asset) {
[group addAsset:asset];
} failureBlock:^(NSError *error) {
}];
}];
}
} failureBlock:^(NSError *error) {
}];
For anyone looking to do this as of iOS 9, things have gotten a bit more complicated since the ALAssetsLibrary is deprecated in favor of the new Photos library.
Here's some Swift code for adding UIImages to a specific album name (creating the album if it doesn't exist), you may need to do some refactoring/optimization for your needs:
func insertImage(image : UIImage, intoAlbumNamed albumName : String) {
//Fetch a collection in the photos library that has the title "albumNmame"
let collection = fetchAssetCollectionWithAlbumName(albumName)
if collection == nil {
//If we were unable to find a collection named "albumName" we'll create it before inserting the image
PHPhotoLibrary.sharedPhotoLibrary().performChanges({
PHAssetCollectionChangeRequest.creationRequestForAssetCollectionWithTitle(albumName)
}, completionHandler: {(success : Bool, error : NSError?) in
if error != nil {
print("Error: " + error!.description)
}
if success {
//Fetch the newly created collection (which we *assume* exists here)
let newCollection = self.fetchAssetCollectionWithAlbumName(albumName)
self.insertImage(image, intoAssetCollection: newCollection!)
}
}
)
} else {
//If we found the existing AssetCollection with the title "albumName", insert into it
self.insertImage(image, intoAssetCollection: collection!)
}
}
func fetchAssetCollectionWithAlbumName(albumName : String) -> PHAssetCollection? {
//Provide the predicate to match the title of the album.
let fetchOption = PHFetchOptions()
fetchOption.predicate = NSPredicate(format: "title == '" + albumName + "'")
//Fetch the album using the fetch option
let fetchResult = PHAssetCollection.fetchAssetCollectionsWithType(
PHAssetCollectionType.Album,
subtype: PHAssetCollectionSubtype.AlbumRegular,
options: fetchOption)
//Assuming the album exists and no album shares it's name, it should be the only result fetched
let collection = fetchResult.firstObject as? PHAssetCollection
return collection
}
func insertImage(image : UIImage, intoAssetCollection collection : PHAssetCollection) {
//Changes for the Photos Library must be maded within the performChanges block
PHPhotoLibrary.sharedPhotoLibrary().performChanges({
//This will request a PHAsset be created for the UIImage
let creationRequest = PHAssetCreationRequest.creationRequestForAssetFromImage(image)
//Create a change request to insert the new PHAsset in the collection
let request = PHAssetCollectionChangeRequest(forAssetCollection: collection)
//Add the PHAsset placeholder into the creation request.
//The placeholder is used because the actual PHAsset hasn't been created yet
if request != nil && creationRequest.placeholderForCreatedAsset != nil {
request!.addAssets([creationRequest.placeholderForCreatedAsset!])
}
},
completionHandler: { (success : Bool, error : NSError?) in
if error != nil {
print("Error: " + error!.description)
}
}
)
}
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