Menu
Share extension: NSExtensionActivationRule, data handling, UI. Use when implementing app features related to share extensions.
Install with Codex or Claude Copy this prompt, paste it into Codex, Claude, or another assistant, and let it review the skill page and install it for you.
Based on SOC occupation classification
App Clip implementation: separate target, associated domains, URL handling, size limits. Use when implementing app features related to app clips.
Live Activities: ActivityKit, Dynamic Island, Lock Screen widgets, push updates. Use when implementing app features related to live activities.
Safari web extension: content scripts, background scripts, native messaging. Use when implementing app features related to safari extensions.
SpriteKit 2D game development: SpriteView integration, scene architecture, entity-component system, physics, game loop. Use when building 2D games.
Post-build visual UI/UX review: capture simulator screenshots, evaluate with vision, collect findings, fix issues sequentially. Use after successful builds to ensure visual quality.
Handle user-pasted images: install as app icons, add to asset catalogs as named image sets, or use as design references. Use when the user attaches images.
| name | share-extension |
| description | Share extension: NSExtensionActivationRule, data handling, UI. Use when implementing app features related to share extensions. |
| tags | swiftui, ios, extensions |
| platforms | ios |
SHARE EXTENSION: SETUP: Requires separate extension target (kind: "share" in plan extensions array). The extension receives shared content (URLs, text, images) from other apps via the share sheet.
PRINCIPAL CLASS (in extension target): class ShareViewController: SLComposeServiceViewController { override func isContentValid() -> Bool { return contentText.count > 0 // Validate before enabling Post button }
override func didSelectPost() {
// Access shared items
guard let item = extensionContext?.inputItems.first as? NSExtensionItem,
let provider = item.attachments?.first else {
extensionContext?.completeRequest(returningItems: [], completionHandler: nil)
return
}
if provider.hasItemConformingToTypeIdentifier("public.url") {
provider.loadItem(forTypeIdentifier: "public.url") { [weak self] url, _ in
// Handle URL
self?.extensionContext?.completeRequest(returningItems: [], completionHandler: nil)
}
}
}
override func configurationItems() -> [Any]! {
return [] // Return SLComposeSheetConfigurationItem array for optional UI
}
}
INFO.PLIST KEYS (in extension's Info.plist via XcodeGen): NSExtensionPrincipalClass: $(PRODUCT_MODULE_NAME).ShareViewController NSExtensionActivationRule: NSExtensionActivationSupportsWebURLWithMaxCount: 1 NSExtensionActivationSupportsText: true
APP GROUP: Use AppGroup entitlement to share data between main app and extension.
SHARE EXTENSION: SETUP: Requires separate extension target (kind: "share" in plan extensions array). The extension receives shared content (URLs, text, images) from other apps via the share sheet.
PRINCIPAL CLASS (in extension target): class ShareViewController: SLComposeServiceViewController { override func isContentValid() -> Bool { return contentText.count > 0 // Validate before enabling Post button }
override func didSelectPost() {
// Access shared items
guard let item = extensionContext?.inputItems.first as? NSExtensionItem,
let provider = item.attachments?.first else {
extensionContext?.completeRequest(returningItems: [], completionHandler: nil)
return
}
if provider.hasItemConformingToTypeIdentifier("public.url") {
provider.loadItem(forTypeIdentifier: "public.url") { [weak self] url, _ in
// Handle URL
self?.extensionContext?.completeRequest(returningItems: [], completionHandler: nil)
}
}
}
override func configurationItems() -> [Any]! {
return [] // Return SLComposeSheetConfigurationItem array for optional UI
}
}
INFO.PLIST KEYS (in extension's Info.plist via XcodeGen): NSExtensionPrincipalClass: $(PRODUCT_MODULE_NAME).ShareViewController NSExtensionActivationRule: NSExtensionActivationSupportsWebURLWithMaxCount: 1 NSExtensionActivationSupportsText: true
APP GROUP: Use AppGroup entitlement to share data between main app and extension.