AI-generated Key Takeaways
- 
          Annotations define constants and types related to activity transitions and geofencing. 
- 
          Interfaces provide main entry points and listeners for activity recognition, location, device orientation, and geofencing, with some deprecated interfaces pointing to newer GoogleApi-based clients. 
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          Classes represent various components and results related to activity recognition, transitions, location requests and results, geofencing events and requests, device orientation, and sleep tracking. 
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          Many deprecated interfaces suggest transitioning to corresponding GoogleApi-based client classes for interacting with location and activity recognition services. 
Annotations
| ActivityTransition.SupportedActivityTransition | Activity transition constants annotation. | 
| Geofence.GeofenceTransition | Geofence transition event. | 
| Geofence.TransitionTypes | Geofence transition types of interest, as either 0
            or a bitwise-OR of GEOFENCE_TRANSITION_flags. | 
| GeofencingRequest.InitialTrigger | The triggering behavior at the moment when the geofences are added. | 
| Granularity | Location granularity levels to be used with APIs
            within FusedLocationProviderClient. | 
| Priority | Location power vs accuracy priority levels to be
            used with APIs within FusedLocationProviderClient. | 
Interfaces
| ActivityRecognitionApi | This interface is deprecated. Use the
            GoogleApi-based API ActivityRecognitionClientinstead. | 
| ActivityRecognitionClient | The main entry point for interacting with activity recognition. | 
| DeviceOrientationListener | A listener for receiving device orientation from
            the 
            FusedOrientationProviderClient. | 
| FusedLocationProviderApi | This interface is deprecated. Use the
            GoogleApi-based API FusedLocationProviderClientinstead. | 
| FusedLocationProviderClient | The main entry point for interacting with the Fused Location Provider (FLP). | 
| FusedOrientationProviderClient | The main entry point for interacting with the Fused Orientation Provider (FOP). | 
| Geofence | Represents a geographical region, also known as a geofence. | 
| GeofencingApi | This interface is deprecated. Use the
            GoogleApi-based API GeofencingClientinstead. | 
| GeofencingClient | The main entry point for interacting with geofencing. | 
| LocationListener | A listener for receiving locations from the FusedLocationProviderClient. | 
| SettingsApi | This interface is deprecated. Use
            GoogleApi-based API SettingsClientinstead. | 
| SettingsClient | The main entry point for interacting with the location settings-enabler APIs. | 
Classes
| ActivityRecognition | The main entry point for activity recognition integration. | 
| ActivityRecognitionResult | Result of an activity recognition. | 
| ActivityTransition | Represents an activity and the transition of it. | 
| ActivityTransition.Builder | The builder to help create an ActivityTransitionobject. | 
| ActivityTransitionEvent | Represents an activity transition event, for example start to walk, stop running etc. | 
| ActivityTransitionRequest | The request object for apps to get notified when user's activity changes. | 
| ActivityTransitionResult | Represents the result of activity transitions. | 
| CurrentLocationRequest | An encapsulation of various parameters for
            requesting the current location through FusedLocationProviderClient. | 
| CurrentLocationRequest.Builder | A builder for CurrentLocationRequest. | 
| DetectedActivity | The detected activity of the device with an an associated confidence. | 
| DeviceOrientation | Data class used to represent a device orientation
            and returned by 
            FusedOrientationProviderClientto registeredDeviceOrientationListeners. | 
| DeviceOrientation.Builder | A builder for DeviceOrientation. | 
| DeviceOrientationRequest | An encapsulation of various parameters for
            requesting device orientation through 
            FusedOrientationProviderClient. | 
| DeviceOrientationRequest.Builder | A builder for DeviceOrientationRequest. | 
| Geofence.Builder | A builder that builds Geofence. | 
| GeofenceStatusCodes | Geofence specific status codes, for use in Status.getStatusCode() | 
| GeofencingEvent | Represents an event from the GeofencingClientAPI. | 
| GeofencingRequest | Specifies the list of geofences to be monitored and how the geofence notifications should be reported. | 
| GeofencingRequest.Builder | A builder for GeofencingRequest. | 
| LastLocationRequest | An encapsulation of various parameters for
            requesting a (cached) last location through FusedLocationProviderClient. | 
| LastLocationRequest.Builder | A builder for LastLocationRequest. | 
| LocationAvailability | Information on the availability of location data. | 
| LocationCallback | A callback for receiving locations from the FusedLocationProviderClient. | 
| LocationRequest | An encapsulation of various parameters for
            requesting location through FusedLocationProviderClient. | 
| LocationRequest.Builder | Builder for LocationRequest. | 
| LocationResult | A data class representing a geographic location result from the fused location provider. | 
| LocationServices | The main entry point for location services integration. | 
| LocationSettingsRequest | Specifies the types of location services the client is interested in using. | 
| LocationSettingsRequest.Builder | A builder that builds LocationSettingsRequest. | 
| LocationSettingsResponse | Successful response of checking settings via 
            SettingsApi.checkLocationSettings(GoogleApiClient,
            LocationSettingsRequest). | 
| LocationSettingsResult | Result of checking settings via 
            SettingsApi.checkLocationSettings(GoogleApiClient, LocationSettingsRequest),
            indicates whether a dialog should be shown to ask the user's consent to change their
            settings. | 
| LocationSettingsStates | Stores the current states of all location-related settings. | 
| LocationSettingsStatusCodes | Location settings specific status codes, for use
            in Status.getStatusCode() | 
| LocationStatusCodes | This class is deprecated. Use GeofenceStatusCodes. | 
| SleepClassifyEvent | Represents a sleep classification event including the classification timestamp, the sleep confidence, and the supporting data such as device motion and ambient light level. | 
| SleepSegmentEvent | Represents the result of segmenting sleep after the user is awake. | 
| SleepSegmentRequest | A request object that specifies what data to receive from the Sleep API. |