Around a watch: Handling rotary input in Wear OS
summary
Average Wear OS sessions run under seven seconds, so rotary input must be fast and reliable. The demo shows concrete code: Compose for Wear OS with Scaffold and ScalingLazyList, a position indicator plus explicit focusRequester, and the onRotaryScrollEvent modifier that returns consumed=true to stop propagation. Discrete controls need separate focus requesters per field; volume or zoom use a custom state and smoothing/snapping. Horologist supplies device-specific utilities, audio UI with haptics, and emulator support for testing.
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