AmbientLifecycleObserver.AmbientLifecycleCallback

open fun onEnterAmbient(ambientDetails: AmbientLifecycleObserver.AmbientDetails): Unit

Called when an activity is entering ambient mode. This event is sent while an activity is running (after onResume, before onPause). All drawing should complete by the conclusion of this method. Note that {@code invalidate()} calls will be executed before resuming lower-power mode.

open fun onExitAmbient(): Unit

Called when an activity should exit ambient mode. This event is sent while an activity is running (after onResume, before onPause).

open fun onUpdateAmbient(): Unit

Called when the system is updating the display for ambient mode. Activities may use this opportunity to update or invalidate views.