NSFileProviderExtension.FetchThumbnails Method
Definition
Important
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When implemented by the developer, fetches thumbnails for the specified item identifiers, runs the specified perThumbnailCompletionHandler for each thumbnail, and runs completionHandler when the entire operation is complete
[Foundation.Export("fetchThumbnailsForItemIdentifiers:requestedSize:perThumbnailCompletionHandler:completionHandler:")]
[ObjCRuntime.Introduced(ObjCRuntime.PlatformName.iOS, 11, 0, ObjCRuntime.PlatformArchitecture.All, null)]
public virtual Foundation.NSProgress FetchThumbnails (Foundation.NSString[] itemIdentifiers, CoreGraphics.CGSize size, UIKit.NSFileProviderExtensionFetchThumbnailsHandler perThumbnailCompletionHandler, Action<Foundation.NSError> completionHandler);abstract member FetchThumbnails : Foundation.NSString[] * CoreGraphics.CGSize * UIKit.NSFileProviderExtensionFetchThumbnailsHandler * Action<Foundation.NSError> -> Foundation.NSProgress
override this.FetchThumbnails : Foundation.NSString[] * CoreGraphics.CGSize * UIKit.NSFileProviderExtensionFetchThumbnailsHandler * Action<Foundation.NSError> -> Foundation.NSProgressParameters
- itemIdentifiers
- NSString[]
The persistent identifiers for the items.
- size
- CGSize
The size, in pixels, of the thumbnails.
- perThumbnailCompletionHandler
- NSFileProviderExtensionFetchThumbnailsHandler
A handler to run for each thumbnail.
Returns
- Attributes
Remarks
(More documentation for this node is coming)
This can be used from a background thread.