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TV App Development that Puts No One in a Bind — Focus Control Lessons from Compose Internals

on YouTube 40m
TalkinJapaneseat DroidKaigi 2025 · 2025-09-10..09-12· [android, accessibility]

speaker

name:taked137
links:none on file

resources

video:https://youtu.be/pavdgC7Week
slides:none on file

summary

Explains how Compose for TV handles focus movement and automatic scrolling for Android TV, contrasting it with Leanback and showing where Compose’s declarative Composables still run TV-specific internal logic. Covers the internal focus-and-scroll mechanisms, key concepts to customize behavior (e.g., Modifier.verticalScroll vs LazyColumn userScrollEnabled), and concrete implementation examples to achieve natural remote-driven UX and reduce debugging time.

AI-written summary · about

chapters (11)

  1. 0:00TV app challenges
  2. 3:55Focus control in Compose4TV
  3. 5:39Default focus control
  4. 9:54Automatic vs manual focus
  5. 11:18Focus groups
  6. 13:49Saving focus position
  7. 20:31Manual focus: FocusProperties
  8. 27:45Scroll control in TV apps
  9. 31:21BringIntoViewSpec for scroll
  10. 36:22Migrating to Compose4TV
  11. 39:12Summary

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