The subtype of the asset collection.
- iOS 8+
- macOS 10.15+Beta
- Mac Catalyst 13.0+Beta
- tvOS 10+
Use subtypes to make minor distinctions between collections of the same type. For albums, for example, you might distinguish user-created albums from those synced from iPhoto. See
PHAssetCollectionSubtype for possible values.
Reading Asset Collection Metadata
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