Optimize power usage by gating UI work and polling on interactivity#1945
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- Introduce `WearLifecycleState` to track whether the app is in the foreground and the device is in an active (non-ambient) state. - Update `WearMainActivity` to monitor ambient mode transitions using `AmbientLifecycleObserver`. - Gate continuous animations, such as the EQ icon and play-button rotation, on the interactive state to save battery. - Optimize polling loops in `VolumeScreen`, `OutputScreen`, and `WearPlayerViewModel` by increasing delays and pausing work when the screen is off or in ambient mode. - Improve `PlayerScreen` performance by memoizing background brushes to reduce GC churn and aligning clock updates to minute boundaries. - Gate player position updates in `WearLocalPlayerRepository` to avoid unnecessary `StateFlow` churn when the UI is not visible.
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WearLifecycleStateto track whether the app is in the foreground and the device is in an active (non-ambient) state.WearMainActivityto monitor ambient mode transitions usingAmbientLifecycleObserver.VolumeScreen,OutputScreen, andWearPlayerViewModelby increasing delays and pausing work when the screen is off or in ambient mode.PlayerScreenperformance by memoizing background brushes to reduce GC churn and aligning clock updates to minute boundaries.WearLocalPlayerRepositoryto avoid unnecessaryStateFlowchurn when the UI is not visible.