KNOWLEDGE NOTESKnowledge Notes
Explore curated knowledge, course notes and methods, with their existing content and sources preserved.
This index lists complete English editions. Additional Chinese notes and bilingual updates remain available in the Chinese index.
350knowledge notesThe entry wiki for the Chinese-English bilingual notes on the Apple Human Interface Guidelines (HIG). It explains the 4 categories of tags in Apple design (philosophy/concept/principle/strategy) + the three-dimensional methodology of atomic design, multi-platform, and hierarchy model + a quick reference for device characteristics and design tradeoffs across the 7 major platforms (iOS/iPadOS/macOS/watchOS/tvOS/visionOS/games) + a reverse lookup map for all 14 apple-hig-* wikis (which wiki to check when you want to look up X). Start here to locate information for any Apple design question.
Design guidelines for 13 input methods in Apple HIG. Gestures (consistency of standard gestures · use custom gestures sparingly) / Keyboards (Full Keyboard Access · standard shortcuts · modifier key order) / Pointing devices (three iPadOS content effects: highlight/lift/hover · snapping · macOS pointer style catalog) / Apple Pencil & Scribble (tilt, pressure, azimuth · hover preview · double tap/squeeze/barrel roll · PencilKit) / Digital Crown (primary navigation on watchOS · immersion adjustment on visionOS) / Eyes (visionOS gaze + hover effect · privacy: gaze point not exposed) / Focus and selection (five tvOS focus states · iPadOS focus groups) / Game controls (touch virtual buttons · physical controller ABXY mapping · single-key keyboard controls) / Action button / Camera Control / Nearby Interaction / Gyroscope and accelerometer / Remotes. Each entry includes applicable platforms + best practices + anti-patterns.
Four small platforms in one. watchOS (timely and relevant · brief and efficient · Digital Crown as core · 3 navigation patterns: NavigationSplitView/TabView/NavigationStack · Series 7 three principles · large titles · 4 levels of full-screen materials · Smart Stack layout · Complications/Live Activities · watch faces: Dial/Infograph/List · full keyboard · Always-On Display (AOD) · secondary function controls) / tvOS (10 principles · content first · focus system · 5–10 Top Shelf items · avoid overstimulation · metadata as secondary · pagination arrows) / CarPlay (next-generation design system · modular instrument cluster · deep brand customization · SF variable fonts · dynamic content area · view area and safe area · automatic appearance based on time and vehicle conditions) / Games (core loop: Action-Reward-Expansion · 10 key principles: Be a Good Teacher / Remove Friction / Tune the Core Loop / Design for Touch / Foster Engagement / Background Transfers / Optimize Graphics / Introductory Videos / Localization / Use Cutting-Edge Technology · Touch-See-Hear-Feel perception loop · virtual joystick game input · adaptive layout anchors · Apple Games app + Game Center achievements/leaderboards/challenges/activities · time-limited in-app events for re-engagement).
