A Boolean value that specifies whether Photos can download the requested image from iCloud.
- iOS 8.0+
- macOS 10.13+
- tvOS 10.0+
true, and the requested image is not stored on the local device, Photos downloads the image 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 image. If
false (the default), and the image is not on the local device, the
PHImage value in the result handler’s
info dictionary indicates that the image is not available unless you enable network access.