https://developer.android.com/reference/androidx/wear/ambient/AmbientLifecycleObserver.AmbientLifecycleCallback?authuser=2
AmbientLifecycleObserver.AmbientLifecycleCallback | API reference | Android Developers
api referenceandroiddevelopers
https://developer.android.google.cn/reference/androidx/wear/ambient/AmbientLifecycleObserver.AmbientLifecycleCallback
AmbientLifecycleObserver.AmbientLifecycleCallback | API reference | Android Developers
api referenceandroiddevelopers