Is your app for everyone? A primer on accessibility for Android
summary
Android accessibility matters with concrete wins: about 1 billion people (≈15% of the world) can benefit, and left‑handed or color‑blind users are nontrivial markets. Practical items include using TalkBack and Switch Access support, running Accessibility Scanner plus Android Studio lint, Espresso accessibility checks and the Google Play pre‑launch report, and following measurable rules: 48dp touch targets, contrast ratios 4.5:1 (small) / 3:1 (large), contentDescription / labelFor and importantForAccessibility. Several real projects (Google Lookout, Outbarriers, Joubert’s guitar) prove these approaches work.
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chapters (25)
- 0:00Start
- 3:47Report on accessibility (WHO)
- 6:29Visual
- 7:44Cognitive impairments
- 8:44Did you know?
- 11:53Accessibility services
- 15:41SwitchAccess
- 17:01Font/Display size
- 18:18Don't rely on colours to indicate state
- 18:38Contrast ratio
- 20:11Ensure touch size is enough
- 20:50Use sp (scalable pixels)
- 21:14Ensure proper TalkBack navigation
- 24:01Improve UX if there's a spoken accessibility service enabled
- 25:04Use custom views the right way
- 25:53Lint
- 26:19Simulate color space
- 26:49Accessibility Scanner
- 27:49Espresso
- 28:08Pre-launch report
- 28:29Not a developer tool but...
- 29:08Let's talk the same language
- 29:28Continuous feedback
- 30:03Accessibility advocate role
- 32:31Take aways from this talk
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