Mobile accessibility ensures that applications built for iOS and Android devices are usable by people with diverse abilities, including those who rely on screen readers, switch controls, or alternative input methods. Both platforms provide robust accessibility frameworks—UIAccessibility on iOS and Android's AccessibilityNodeInfo system—that translate UI elements into information assistive technologies can interpret. Understanding how to properly configure accessibility labels, manage focus order, and test with VoiceOver and TalkBack transforms mobile apps from technically functional to genuinely inclusive. The key insight: accessibility is not a feature to bolt on at the end, but a fundamental design consideration that improves usability for everyone.
What This Cheat Sheet Covers
This topic spans 20 focused tables and 187 indexed concepts. Below is a complete table-by-table outline of this topic, spanning foundational concepts through advanced details.
Table 1: Screen Reader Setup and Navigation
| Feature | Example | Description |
|---|---|---|
Enable: Settings → Accessibility → VoiceOver → On Practice: VoiceOver Practice mode | • Apple's built-in screen reader that provides spoken descriptions of on-screen elements • triple-click home or side button for quick toggle. | |
Enable: Settings → Accessibility → TalkBack → On Shortcut: Volume keys (both) for 3 seconds | • Google's screen reader for Android • announces UI elements and provides audio feedback for all interactions and gestures. | |
Swipe right → next element Swipe left → previous element | • Primary navigation gesture for both VoiceOver and TalkBack • moves focus sequentially through accessibility elements in reading order. | |
Single tap → select & hear Double tap → activate | Standard pattern: first tap announces, second tap activates the focused element (button, link, control). | |
Two-finger swipe down → read from top Two-finger swipe up → read from current | • TalkBack: scrolls content continuously • VoiceOver: reads all visible content from the current position |