A protocol that defines properties you implement to make your application’s content visible in a QuickLook preview (QLPreview in iOS or QLPreview in macOS).
SDKs
- iOS 4.0+
- macOS 10.6+
- Mac Catalyst 13.0+
Frameworks
- Quick
Look - Quartz
Declaration
protocol QLPreviewItem
Overview
The methods in the QLPreview protocol are also declared as a category on the NSURL class. As a result, you can use NSURL objects directly as preview items—provided that you want to use the default titles of those items. A default title is the last path component of an item’s URL. If you want to supply your own preview item titles, create your own preview item objects that adopt this protocol.