Apple Sample Code
Collection

UIKit sample architecture

Source-backed, high-level architecture notes for Apple sample-code pages grouped in the UIKit folder.

  • Catalog module label: UIKit
  • Coverage: 48 / 48 sample pages documented
  • Source policy: archive hashes and extracted-tree references are verified locally before analysis

Samples

Sample Platforms High-level architecture Documented patterns
Add Home Screen quick actions iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → ContactDetailViewController → UIKit APIs. View-controller organization, Delegate or data-source callbacks
Adding context menus in your app iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → BaseCollectionViewTestViewController → DetailViewManager → CollectionViewPreviewProvider → UIKit APIs. View-controller organization, Protocol-oriented abstraction, Delegate or data-source callbacks
Adding hardware keyboard support to your app iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → AddShapeViewController → FileStore → UIKit APIs. View-controller organization, Protocol-oriented abstraction, Delegate or data-source callbacks, Central store
Adding menus and shortcuts to the menu bar and user interface iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → MenuController → UIKit APIs. View-controller organization, Protocol-oriented abstraction, Delegate or data-source callbacks
Adjusting your layout with keyboard layout guide iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → ViewController → UIKit APIs. View-controller organization, Delegate or data-source callbacks
Adopting drag and drop in a custom view iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → ViewController → UIKit APIs. View-controller organization, Delegate or data-source callbacks
Adopting drag and drop in a table view iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → TableViewController → Model → UIKit APIs. View-controller organization, Delegate or data-source callbacks
Adopting hover support for Apple Pencil iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → ViewController → UIKit APIs. View-controller organization, Delegate or data-source callbacks
Adopting iOS Dark Mode iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → After2MoreViewController → UIKit APIs. View-controller organization, Delegate or data-source callbacks
Adopting menus and UIActions in your user interface iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → BarButtonItemDemoViewController → UIKit APIs. View-controller organization, Delegate or data-source callbacks
Asynchronously loading images into table and collection views iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → CollectionViewController → UIKit APIs. View-controller organization, Delegate or data-source callbacks
Building a document browser app for custom file formats iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → DocumentBrowserViewController → Document → ThumbnailProvider → UIKit APIs. View-controller organization, Delegate or data-source callbacks
Building an app with a document browser iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → DocumentBrowserViewController → TextDocument → UIKit APIs. View-controller organization, Protocol-oriented abstraction, Delegate or data-source callbacks
Building and improving your app with Mac Catalyst iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → BrowserSplitViewController → DetailToolbarModel → ItemPrintPageRenderer → UIKit APIs. View-controller organization, Protocol-oriented abstraction, Delegate or data-source callbacks
Building high-performance lists and collection views iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → PostGridViewController → AnyModelStore → UIKit APIs. View-controller organization, Protocol-oriented abstraction, Delegate or data-source callbacks, Central store
Changing the appearance of selected and highlighted cells iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → ViewController → UIKit APIs. View-controller organization, Delegate or data-source callbacks
Creating self-sizing table view cells iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → ViewController → UIKit APIs. View-controller organization, Delegate or data-source callbacks
Customizing an image picker controller iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → APLViewController → UIKit APIs. View-controller organization, Delegate or data-source callbacks
Customizing and resizing sheets in UIKit iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → SettingsViewController → UIKit APIs. View-controller organization, Delegate or data-source callbacks
Customizing collection view layouts iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → FeedViewController → UIKit APIs. View-controller organization, Delegate or data-source callbacks
Customizing your app’s navigation bar iOS, iPadOS, Mac Catalyst, macOS, tvOS, visionOS, watchOS A Swift sample with the source-visible chain AppDelegate → CustomBackButtonDetailViewController → UIKit APIs. View-controller organization, Delegate or data-source callbacks
Data delivery with drag and drop iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → ContactDetailsViewController → UIKit APIs. View-controller organization, Delegate or data-source callbacks
Detecting changes in the preferences window iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → ViewController → UIKit APIs. View-controller organization, Delegate or data-source callbacks
Disabling the pull-down gesture for a sheet iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → EditViewController → UIKit APIs. View-controller organization, Protocol-oriented abstraction, Delegate or data-source callbacks
Display text with a custom layout iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → BaseViewController → UIKit APIs. View-controller organization, Delegate or data-source callbacks
Displaying searchable content by using a search controller iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → DetailViewController → UIKit APIs. View-controller organization, Delegate or data-source callbacks
Enhancing your iPad app with pointer interactions iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → ThreadPickerViewController → UIKit APIs. View-controller organization, Protocol-oriented abstraction, Delegate or data-source callbacks
Enriching your text in text views iOS, iPadOS, Mac Catalyst, macOS, visionOS A Swift sample with the source-visible chain TextKitAndTextViewSampleApp → ContentView → AnimatedAttachmentViewProvider → SwiftUI / AVKit APIs. Delegate or data-source callbacks
Illustrating the force, altitude, and azimuth properties of touch input iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → ViewController → UIKit APIs. View-controller organization, Protocol-oriented abstraction, Delegate or data-source callbacks
Implementing modern collection views iOS, iPadOS, Mac Catalyst, macOS A Swift sample bundle with entry-bearing project variants Modern Collection Views Mac, Modern Collection Views, each leading to UIKit APIs. View-controller organization, Delegate or data-source callbacks
Implementing Peek and Pop iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → ColorItemViewController → UIKit APIs. View-controller organization, Delegate or data-source callbacks
Integrating pointer interactions into your iPad app iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → ViewController → UIKit APIs. View-controller organization, Delegate or data-source callbacks
Leveraging touch input for drawing apps iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → CanvasMainViewController → UIKit APIs. View-controller organization, Delegate or data-source callbacks
Navigating an app’s user interface using a keyboard iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → DescriptionPopoverViewController → UIKit APIs. View-controller organization, Protocol-oriented abstraction, Delegate or data-source callbacks
Prefetching collection view data iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → ViewController → Model → UIKit APIs. View-controller organization, Delegate or data-source callbacks
Restoring your app’s state iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → CollectionViewController → DataModelManager → UIKit APIs. View-controller organization, Protocol-oriented abstraction, Delegate or data-source callbacks
Selecting multiple items with a two-finger pan gesture iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → CollectionViewController → FillerModel → UIKit APIs. View-controller organization, Delegate or data-source callbacks
Showing help tags for views and controls using tooltip interactions iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → ViewController → UIKit APIs. View-controller organization, Delegate or data-source callbacks
Supporting desktop-class features in your iPad app iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → DocumentBrowserViewController → MarkdownDocument → UIKit APIs. View-controller organization, Protocol-oriented abstraction, Delegate or data-source callbacks
Supporting gesture interaction in your apps iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → ViewController → UIKit APIs. View-controller organization, Delegate or data-source callbacks
Supporting HDR images in your app iOS, iPadOS, Mac Catalyst, macOS A Swift sample with the source-visible chain HDRDemo23App → MainView → Renderer → SwiftUI / CoreImage APIs. Binding-based state propagation
Supporting multiple windows on iPad iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → GalleryViewController → PhotoManager → UIKit APIs. View-controller organization, Delegate or data-source callbacks
Synchronizing documents in the iCloud environment iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → DetailViewController → Document → MetadataProvider → UIKit APIs. View-controller organization, Protocol-oriented abstraction, Delegate or data-source callbacks
UIKit Catalog: Creating and customizing views and controls iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → ActivityIndicatorViewController → UIKit APIs. View-controller organization, Delegate or data-source callbacks
Updating collection views using diffable data sources iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → RecipeDetailViewController → DataStore → UIKit APIs. View-controller organization, Delegate or data-source callbacks, Central store
Using suggested searches with a search controller iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → DetailViewController → UIKit APIs. View-controller organization, Protocol-oriented abstraction, Delegate or data-source callbacks
Using SwiftUI with UIKit iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → HostingConfigurationViewController → DataStore → UIKit APIs. View-controller organization, Delegate or data-source callbacks, Central store, Publisher-backed observable state
Using TextKit 2 to interact with text iOS, iPadOS, Mac Catalyst, macOS A Swift sample bundle with entry-bearing project variants iOS, macOS, each leading to UIKit APIs. View-controller organization, Delegate or data-source callbacks

Cross-sample signals

Recurring documented patterns

Pattern label Sample documents
Delegate or data-source callbacks 47
View-controller organization 46
Protocol-oriented abstraction 14
Central store 4

Type-role naming evidence

Counts below are declaration-name suffixes, not inferred patterns.

Role suffix Distinct declarations across samples
Controller 206
Delegate 93
View 73
Model 10
Provider 9
Store 8
Document 6
DataSource 5
Manager 3
Renderer 2
App 2
Transformer 1
Operation 1
Component 1

Swift access-control evidence

These are declaration occurrences in scanned Swift source, including implicit internal declarations.

Access level Occurrences
implicit internal 7830
private 751
fileprivate 61
public 29
private(set) 9

References

Generated from the verified local catalog and completed Markdown documents.