A Boolean value that specifies whether Photos can download the requested asset resource data from iCloud.
- iOS 9+
- macOS 10.15+
- Mac Catalyst 13.0+
- tvOS 10+
true, and the requested resource data is not stored on the local device, Photos downloads that data from iCloud. To be notified of the download’s progress, use the
progress property to provide a block that Photos calls periodically while downloading the resource data. If
false (the default), and the resource data is not on the local device, Photos calls the
completion block you provided in your request, with an
NSError object indicating that the resource requires network access.