MacOS PhotoKit - List all user-created Smart Albums?
NickName:Shadowman Ask DateTime:2020-05-24T04:44:59

MacOS PhotoKit - List all user-created Smart Albums?

I've started playing around with macOS development for the first time. I'm trying to query the list of Smart Albums I've created in the macOS Photos app. As you can see in this screenshot, I've defined 18 Smart Albums and 1 regular Album.

Screenshot of the Albums

However, when I fetch the Smart Album PHAssetCollections I do not see the Smart Albums I've defined. Here is the code I'm using to fetch a total photo count, the Smart Albums, and then normal Albums:

let allPhotosOptions = PHFetchOptions()
allPhotosOptions.includeAssetSourceTypes = [.typeUserLibrary]

allPhotosOptions.sortDescriptors = [NSSortDescriptor(key: "creationDate", ascending: true)]
let allPhotos = PHAsset.fetchAssets(with: allPhotosOptions)
let photoCount = allPhotos.count
print("photoCount=\(photoCount)")

print("***********************************")
print("Smart Albums")
print("***********************************")

let smartAlbumsOptions = PHFetchOptions()
smartAlbumsOptions.includeAssetSourceTypes = [.typeUserLibrary]
let smartAlbums = PHAssetCollection.fetchAssetCollections(with: .smartAlbum, subtype: .any, options: smartAlbumsOptions)
let smartAlbumCount = smartAlbums.count
print("smartAlbumCount=\(smartAlbumCount)")
smartAlbums.enumerateObjects { (collection, index, stop) in
    print("Collection \(index + 1):")
    print("\tlocalizedTitle=\(String(describing: collection.localizedTitle))")
    print("\tassetCollectionType=\(collection.assetCollectionType)")
    print("\testimatedAssetCount=\(collection.estimatedAssetCount)")
    print("\tstartDate=\(String(describing: collection.startDate)), endDate=\(String(describing: collection.endDate))")
}

print("***********************************")
print("Albums")
print("***********************************")

let albums = PHAssetCollection.fetchAssetCollections(with: .album, subtype: .any, options: nil)
let albumCount = albums.count
print("albumCount=\(albumCount)")
albums.enumerateObjects { (collection, index, stop) in
    print("Collection \(index + 1):")
    print("\tlocalizedTitle=\(String(describing: collection.localizedTitle))")
    print("\tassetCollectionType=\(collection.assetCollectionType)")
    print("\testimatedAssetCount=\(collection.estimatedAssetCount)")
    print("\tstartDate=\(String(describing: collection.startDate)), endDate=\(String(describing: collection.endDate))")
}

However, when I run this code I see the following output, showing that my user-created Smart Albums are not being returned:

2020-05-23 16:41:31.059604-0400 PhotoKitTest[40065:709882] Metal API Validation Enabled
2020-05-23 16:41:33.027378-0400 PhotoKitTest[40065:709882] [core] "Error returned from daemon: Error Domain=com.apple.accounts Code=7 "(null)""
photoCount=25369
***********************************
Smart Albums
***********************************
smartAlbumCount=15
Collection 1:
    localizedTitle=Optional("Bursts")
    assetCollectionType=PHAssetCollectionType
    estimatedAssetCount=9223372036854775807
    startDate=Optional(2017-03-13 14:50:57 +0000), endDate=Optional(2018-08-29 15:15:03 +0000)
Collection 2:
    localizedTitle=Optional("Slo-mo")
    assetCollectionType=PHAssetCollectionType
    estimatedAssetCount=9223372036854775807
    startDate=nil, endDate=nil
Collection 3:
    localizedTitle=Optional("Screenshots")
    assetCollectionType=PHAssetCollectionType
    estimatedAssetCount=9223372036854775807
    startDate=Optional(2015-10-22 13:51:51 +0000), endDate=Optional(2020-05-21 14:39:40 +0000)
Collection 4:
    localizedTitle=Optional("Animated")
    assetCollectionType=PHAssetCollectionType
    estimatedAssetCount=9223372036854775807
    startDate=nil, endDate=nil
Collection 5:
    localizedTitle=Optional("Live Photos")
    assetCollectionType=PHAssetCollectionType
    estimatedAssetCount=9223372036854775807
    startDate=nil, endDate=nil
Collection 6:
    localizedTitle=Optional("Unable to Upload")
    assetCollectionType=PHAssetCollectionType
    estimatedAssetCount=9223372036854775807
    startDate=nil, endDate=nil
Collection 7:
    localizedTitle=Optional("Panoramas")
    assetCollectionType=PHAssetCollectionType
    estimatedAssetCount=9223372036854775807
    startDate=Optional(2015-06-29 22:14:27 +0000), endDate=Optional(2015-07-26 19:28:39 +0000)
Collection 8:
    localizedTitle=Optional("Videos")
    assetCollectionType=PHAssetCollectionType
    estimatedAssetCount=9223372036854775807
    startDate=Optional(2004-11-11 01:03:36 +0000), endDate=Optional(2020-05-23 14:52:01 +0000)
Collection 9:
    localizedTitle=Optional("Hidden")
    assetCollectionType=PHAssetCollectionType
    estimatedAssetCount=9223372036854775807
    startDate=nil, endDate=nil
Collection 10:
    localizedTitle=Optional("Selfies")
    assetCollectionType=PHAssetCollectionType
    estimatedAssetCount=9223372036854775807
    startDate=Optional(2011-08-06 13:17:49 +0000), endDate=Optional(2020-05-21 14:33:38 +0000)
Collection 11:
    localizedTitle=Optional("Favorites")
    assetCollectionType=PHAssetCollectionType
    estimatedAssetCount=9223372036854775807
    startDate=nil, endDate=nil
Collection 12:
    localizedTitle=Optional("Time-lapse")
    assetCollectionType=PHAssetCollectionType
    estimatedAssetCount=9223372036854775807
    startDate=nil, endDate=nil
Collection 13:
    localizedTitle=Optional("Portrait")
    assetCollectionType=PHAssetCollectionType
    estimatedAssetCount=9223372036854775807
    startDate=nil, endDate=nil
Collection 14:
    localizedTitle=Optional("Long Exposure")
    assetCollectionType=PHAssetCollectionType
    estimatedAssetCount=9223372036854775807
    startDate=nil, endDate=nil
Collection 15:
    localizedTitle=Optional("Recents")
    assetCollectionType=PHAssetCollectionType
    estimatedAssetCount=9223372036854775807
    startDate=Optional(2001-09-22 16:05:17 +0000), endDate=Optional(2020-05-23 14:52:01 +0000)
***********************************
Albums
***********************************
albumCount=1
Collection 1:
    localizedTitle=Optional("My Test Album")
    assetCollectionType=PHAssetCollectionType
    estimatedAssetCount=0
    startDate=nil, endDate=nil

As you can see, my normal album My Test Album is returned, but none of the Smart Albums I created, such as those for 2008, 2009, etc. Am I doing something wrong? Do I need an additional value in my Info.plist beyond including NSPhotoLibraryUsageDescription? This is my first time playing around with the PhotoKit framework so I'm sure I may be misunderstanding something. But, I thought this was a pretty simple use case. I'm running this on macOS Catalina, using Xcode 11.5 and Swift.

Copyright Notice：Content Author:「Shadowman」，Reproduced under the CC 4.0 BY-SA copyright license with a link to the original source and this disclaimer.
Link to original article：https://stackoverflow.com/questions/61978366/macos-photokit-list-all-user-created-smart-albums

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