# Frequently Asked Questions

#### Product details

- [How should the Navigation SDK Terms
  of Service notice be shown?](https://developers.google.com/maps/documentation/navigation/android-sdk/faq#navfacttos)
- [Which languages does voice guidance support?](https://developers.google.com/maps/documentation/navigation/android-sdk/faq#navfactlanguage)
- [Is the bearing maintained when the user
  exits navigation mode?](https://developers.google.com/maps/documentation/navigation/android-sdk/faq#navfactbearing)
- [Are polylines available when starting
  or changing a route?](https://developers.google.com/maps/documentation/navigation/android-sdk/faq#navfactpolylines)
- [Do app users need to have Google Maps
  mobile installed?](https://developers.google.com/maps/documentation/navigation/android-sdk/faq#navfactgmminstalled)
- [Can the Navigation SDK
  identify parking near restaurants and other destinations?](https://developers.google.com/maps/documentation/navigation/android-sdk/faq#navfactparkingnearby)
- [Does the Navigation SDK
  show traffic direction in the lanes when approaching a turning point?](https://developers.google.com/maps/documentation/navigation/android-sdk/faq#navfacttrafficflowatturns)
- [Which versions of the JDK does the Navigation SDK
  support?](https://developers.google.com/maps/documentation/navigation/android-sdk/faq#jdkrequirements)

#### Network and connectivity

- [How does the
  Navigation SDK handle poor network connectivity?](https://developers.google.com/maps/documentation/navigation/android-sdk/faq#networkpoorconnectivity)
- [How does the
  Navigation SDK handle poor or lost GPS signals?](https://developers.google.com/maps/documentation/navigation/android-sdk/faq#gpspoorsignal)
- [Is an offline mode available?](https://developers.google.com/maps/documentation/navigation/android-sdk/faq#networkofflinemode)

#### Data

- [Can I retrieve all of the
  stops/destinations in a journey before starting the route?](https://developers.google.com/maps/documentation/navigation/android-sdk/faq#datadirectionsbeforedriver)
- [Is turn-by-turn route guidance available
  at the start of a route?](https://developers.google.com/maps/documentation/navigation/android-sdk/faq#dataturnbyturn)
- [How is the Estimated Time of Arrival
  (ETA) communicated to the app users?](https://developers.google.com/maps/documentation/navigation/android-sdk/faq#dataetacommunicatedwithrider)
- [Can the `RoadSnappedLocationProvider` be used to obtain the user's
  current snapped location if navigation is not in the foreground?](https://developers.google.com/maps/documentation/navigation/android-sdk/faq#dataroadsnappedlocationprovider)
- [Does the Navigation SDK
  support geofencing?](https://developers.google.com/maps/documentation/navigation/android-sdk/faq#datageofencing)
- [Can I disable notifications when
  the Navigation app is in the background?](https://developers.google.com/maps/documentation/navigation/android-sdk/faq#datadisablebgnotifications)
- [How do I see the log of transactions kept by Google?](https://developers.google.com/maps/documentation/navigation/android-sdk/faq#navfacttransactionlogs)

#### UI Customization

- [Can I color code the best
  route option?](https://developers.google.com/maps/documentation/navigation/android-sdk/faq#uishowroutepreference)
- [Can the Navigation SDK
  show the ETA for the final destination?](https://developers.google.com/maps/documentation/navigation/android-sdk/faq#uishowetafinaldestination)
- [How can I hide the ETA updates?](https://developers.google.com/maps/documentation/navigation/android-sdk/faq#uihideeta)
- [Which UI customizations are
  available for the header and footer cards?](https://developers.google.com/maps/documentation/navigation/android-sdk/faq#uicustomheadersfooters)

#### Routing

- [Can I provide a specific route
  to a user or remove alternative routes?](https://developers.google.com/maps/documentation/navigation/android-sdk/faq#routeforcejourneypath)
- [Can I show the user a different label
  for the destination than the default destination location?](https://developers.google.com/maps/documentation/navigation/android-sdk/faq#routecustomdestinationtag)
- [Can I use the Navigation SDK
  to track deviations from a defined path?](https://developers.google.com/maps/documentation/navigation/android-sdk/faq#routepassengersecurity)
- [Can the user exit navigation without
  completing the route?](https://developers.google.com/maps/documentation/navigation/android-sdk/faq#routeabortnavigation)
- [Does the Navigation SDK support routing and navigation for trucks and large vehicles?](https://developers.google.com/maps/documentation/navigation/android-sdk/faq#routelargevehicles)

#### Simulator

- [Does the simulator support changes to
  the route?](https://developers.google.com/maps/documentation/navigation/android-sdk/faq#simulatorandroutechanges)

#### Workflows

- [How do I dismiss the notification after closing an activity that contains a
  navigation fragment? (Android only)](https://developers.google.com/maps/documentation/navigation/android-sdk/faq#workflowdismissnotification)

#### Mobility Services

- [How is using the Navigation SDK different for Mobility Services customers?](https://developers.google.com/maps/documentation/navigation/android-sdk/faq#mobilitydifferences)
- [How can I tell if I'm a Mobility Services customer?](https://developers.google.com/maps/documentation/navigation/android-sdk/faq#determinemobility)
- [How is the Navigation SDK billed for Mobility Services customers?](https://developers.google.com/maps/documentation/navigation/android-sdk/faq#mobilitybilling)
- [Which Navigation SDK
  APIs should only be used by Mobility Services customers?](https://developers.google.com/maps/documentation/navigation/android-sdk/faq#mobilityonlyapis)
- [If I'm a Mobility Services customer, can I also use a non-Mobility Services implementation of the Navigation SDK?](https://developers.google.com/maps/documentation/navigation/android-sdk/faq#mobilitynonmobility)

## Product details


How should the Navigation SDK Terms of Service notice be shown?
:
    Your app must implement a dialog with the Navigation SDK
    Terms of Service notice that each user must accept. This dialog gives the
    user the opportunity to agree with the Terms of Service. A text file of the
    terms is provided with the Navigation SDK.

    Use the `NavigationApi.showTermsAndConditionsDialog`
    method to display the dialog containing the terms.


Which languages does voice guidance support?
:
    Any languages supported by Google Maps Mobile are automatically
    available for the Navigation SDK.
    A device has a default system language and an app cannot change that setting; however,
    the app has access to over 70 languages.


Is the bearing maintained when the user exits navigation mode?

:   Yes. Once started, the `LocationListener` continues to
    run in the background. Your app continues road snapping the position and maintains
    the bearing.


Are polylines available when starting or changing a route?

:   Yes. When a route is created or changed, the `RouteChangeListener`
    provides polylines.


Do app users need to have Google Maps Mobile installed?
:
    No, the Navigation SDK does not require Google Maps Mobile
    to be installed on the device.


Can the Navigation SDK identify parking near restaurants
and other points of interest?
:
    No, the Navigation SDK does not provide this feature at this
    time.


Does the Navigation SDK show traffic direction in the lanes
when approaching a turning point?
:
    Yes. The traffic direction is available and displayed by default.


Which versions of the JDK does the Navigation SDK support?
:
    The Navigation SDK supports LTS versions of Java SE that are actively supported by Oracle. These versions are listed as having *Premier Support* on the [Oracle Java SE Support Roadmap](https://www.oracle.com/java/technologies/java-se-support-roadmap.html).

## Network and connectivity


How does the Navigation SDK handle poor network connectivity?
:
    The Navigation SDK pre-caches the route for each journey.
    The pre-cached information includes routing information for 15-20 minutes,
    and route alternatives in case the user deviates from the route. The
    Navigation SDK approximates position using the device GPS and
    sensors.


How does the Navigation SDK handle poor or lost GPS signals?

:
    After navigation starts and the Navigation SDK receives a
    GPS signal at least once, it will display a "Searching for GPS..." message
    in the following situations:

    - If more than 10 seconds have passed since it last received a GPS signal.
    - If the routing position has moved more than 500m since it last received a GPS signal.


    If the SDK does not receive a GPS signal for an extended period of time, the progress along the route, indicated in the app by the position of the chevron, may slow down until it comes to a complete stop. In this case, the chevron on the map will remain at the location indicated by the last GPS signal. The SDK will not automatically exit navigation mode as a result of not receiving a GPS signal. However, it may not be able to provide guidance until it receives a signal again.


Is an offline mode available?
:
    No, the Navigation SDK does not offer an
    offline mode at this time; however, the SDK does provide pre-cached information
    for a journey.

## Data


Can I retrieve all of the stops/destinations in a journey before starting
the route?

:   Yes. To retrieve the directions for a route, call
    `Navigator.getRouteSegments()`.


Is turn-by-turn route guidance available at the start of a route?
:
    Yes. The Navigation SDK provides a list of route segments.
    In addition, the user can swipe through the directions card in the header
    to see each maneuver.


How is ETA communicated to the app users?

:   Use the following steps to give ETA information to app users:

    1. Retrieve the time and distance for all waypoints using `Navigator.getTimeAndDistanceList()`.
    2. Forward this information to the client application as you do for the driver ETA.


Can the `RoadSnappedLocationProvider` be used to obtain the user's
current snapped location if navigation is not in the foreground?

:   Yes. The `RoadSnappedLocationProvider` runs in the
    background by default.


Does the Navigation SDK support geofencing?

:   No. In the context of navigation, `remainingTimeOrdistanceChangeListener`
    has an advantage over a geofence. The geofence might not account for
    road geometry, and might not be centered on the exact point to which the
    user is navigating.

    You can approximate this feature using
    `remainingTimeOrdistanceChangeListener`.

    1. Set the threshold to determine the frequency of the callbacks.
    2. Check the remaining distance to the destination.

    For example, if you set the threshold to 100m,
    you receive a callback when the distance to the destination changes
    by 100m. As the distance decreases, you can update this threshold to a smaller
    value and receive more frequent callbacks. Then, inspect the remaining distance to
    determine if you are close enough to the pickup/drop-off location.


Can I disable notifications when the Navigation app is in the background?

:   Yes. Use `Navigator.setHeadsUpNotificationEnabled`
    to control notifications. This method has a boolean argument. `FALSE`
    disables notifications; `TRUE` enables notifications.


How do I see the log of transactions kept by Google?

:   The transaction recorder tracks pickups and dropoffs with a unique ID,
    which Google logs for product analytics purposes. If you are a [Mobility Services](https://developers.google.com/maps/documentation/transportation-logistics/mobility) customer, Google
    recommends that you implement the
    [`NavigationTransactionRecorder`](https://developers.google.com/maps/documentation/navigation/android-sdk/reference/com/google/android/libraries/navigation/NavigationTransactionRecorder) to
    log a record of your transactions.

## UI Customization


Can I color code the best route option?
:
    No. Color coding a specific route option is not supported at this time.


Can the Navigation SDK show the ETA for the final destination?

:   Yes. Use the following methods:

    1. Retrieve the time and distance for all waypoints using `Navigator.getTimeAndDistanceList()`.
    2. Hide the ETA of the current waypoint using `NavigationFragment.setEtaCardEnabled(false)`.
    3. Render the final destination ETA.


How can I hide ETA updates?

:   You can disable ETA cards by calling `navigationView.setEtaCardEnabled(false)`.


Which UI customizations are available for the header and footer cards?

:
    Use `StylingOptions` to set the background
    color styling. To hide or show the header and
    footer, use the `setHeaderEnabled` and
    `setFooterEnabled` member functions of
    `NavigationFragment`.

## Routing


Can I provide a specific route
to a user or remove alternative routes?
:
    No. By default, multiple routes are provided and the fastest route has priority.
    You can affect the default route by adding preferences, such as "avoid
    highways and tolls," to your request. Adding waypoints also affects the route.


Can I show the app user a different label for the destination than the default
destination location?

:   Yes. Create a `Marker` with a
    custom title for the destination and the latitude/longitude. The
    Navigation SDK displays the custom title and the coordinates
    on the `NavigationMap`.


Can I use the Navigation SDK to track deviations from a defined path?

:   Yes. Use `Navigator.setRouteChangedListener` to
    receive notifications when a route changes or a new route is recommended:

    1. Register a listener that checks the device position along the route using the `Navigator.setRouteChangedListener` method.
    2. Add code to the callback event handler, `onRouteChanged`:
       - Send a message to the app user with updated ETA and distance information.
       - Track the device's location.
       - \[optional\] Add other features required by your app to handle when the user is off the prescribed route.


Can the user exit navigation without completing the route?

:   Yes. Call the `Navigator.stopGuidance` method to
    stop navigation.


Does the Navigation SDK support routing and navigation for trucks and large vehicles?

:   Yes. With large vehicle routing (LVR), you can pass truck-specific route tokens generated by the Routes API or Route Optimization API to the Navigation SDK. The SDK provides turn-by-turn navigation with route callouts (height, weight, hazmat, and truck restrictions) and maintains the vehicle's physical profile during dynamic rerouting. For details, see [Navigate large vehicle routes](https://developers.google.com/maps/documentation/navigation/android-sdk/large-vehicle-navigation).

## Simulator


Does the simulator support route changes?

:   Yes. Call `simulateLocationsAlongNewRoute` to
    simulate a journey that includes a route change. The `simulateLocationsAlongExistingRoute`
    method ignores changes to the existing route.

## Workflows


How do I dismiss the notification after closing an activity that contains a
navigation fragment?

:   The navigation notification remains visible during navigation,
    when the activity is closed. When the vehicle arrives at the
    destination, navigation stops, and the notification disappears.


    To handle clicks on the notification, use the `Navigator.startGuidance(intent resumeIntent)`.
    The `resume intent` fires when the app user clicks the notification.
    Typically, the `Navigator.startguidance(getIntent())` is called from
    the main Activity, which recalls the Activity when the app user clicks the notification.

## Mobility Services

<br />

How is using the Navigation SDK different for Mobility Services customers?
Google Maps Platform Mobility Services offer a collection of APIs and SDKs to help support enterprise needs for transportation and logistics businesses. For Mobility Services customers, the Navigation SDK is typically used in conjunction with related services for route optimization, dispatch, task tracking, fleet analytics, and more. The Navigation SDK is also [billed differently](https://developers.google.com/maps/documentation/navigation/android-sdk/faq#mobilitybilling) for Mobility Services customers. For more information, see the [Mobility Services](https://developers.google.com/maps/documentation/transportation-logistics/mobility) documentation.


Mobility products are currently available only to select customers. Contact your sales representative for more information.

<br />

<br />

How can I tell if I'm a Mobility Services customer? If you're not sure if you're currently implementing the Navigation SDK as a Mobility Services customer, look for a `ReportBillableEvent` call in your code. Only Mobility Services customers should call the `ReportBillableEvent` method.

<br />

<br />

How is the Navigation SDK billed for Mobility Services customers? For Mobility Services customers, billing and pricing for the Navigation SDK depend on the service agreement you have with Google Maps Platform. For information on verifying that your Mobility Services implementation is being billed correctly, see [Billing validation](https://developers.google.com/maps/architecture/mvi-mobility-billing#billing_validation). For additional information about Mobility Services billing, contact your sales representative.

<br />

<br />

Which Navigation SDK APIs should only be used by Mobility Services customers?
There are several APIs in the Navigation SDK that are only intended for use by [Mobility Services](https://developers.google.com/maps/documentation/transportation-logistics/mobility) customers, who are billed by Google on a per-transaction basis. If you are not a Mobility Services customer, the following methods are no-ops:

- [`NavigationTransactionRecorder.pickup()`](https://developers.google.com/maps/documentation/navigation/android-sdk/reference/com/google/android/libraries/navigation/NavigationTransactionRecorder#pickup(com.google.android.libraries.navigation.Waypoint,%20java.util.List%3Cjava.lang.String%3E))
- [`NavigationTransactionRecorder.dropoff()`](https://developers.google.com/maps/documentation/navigation/android-sdk/reference/com/google/android/libraries/navigation/NavigationTransactionRecorder#dropoff(com.google.android.libraries.navigation.Waypoint,%20java.util.List%3Cjava.lang.String%3E))
- [`NavigationTransactionRecorder.generatedTransactionId()`](https://developers.google.com/maps/documentation/navigation/android-sdk/reference/com/google/android/libraries/navigation/NavigationTransactionRecorder#public-static-string-generatetransactionid)
- [`Navigator.fetchRouteInfo()`](https://developers.google.com/maps/documentation/navigation/android-sdk/reference/com/google/android/libraries/navigation/Navigator#public-abstract-listenableresultfuturerouteinfo-fetchrouteinfo-waypoint-waypoint,-routingoptions-routingoptions)
- [`Navigator.setTransactionIds()`](https://developers.google.com/maps/documentation/navigation/android-sdk/reference/com/google/android/libraries/navigation/Navigator#public-abstract-void-settransactionids-liststring-transactionids)

<br />

<br />

If I'm a Mobility Services customer, can I also use a non-Mobility Services implementation of the Navigation SDK?
Yes, Mobility Services customers can use both Mobility Services and non-Mobility Services implementations of the Navigation SDK. However, you can only use one implementation type in an app at one time. You also need to create a new Google Cloud project, billing account, and API key, separate from those that you use with your Mobility Services implementation. For more information, see [the Navigation SDK setup overview](https://developers.google.com/maps/documentation/navigation/android-sdk/setup-overview).


For more information about using a non-Mobility Services implementation of the Navigation SDK, including migrating an app from one implementation type to the other, contact your Google account representative.


Note: If you are not currently a Mobility Services customer and are interested in learning more about the Mobility Services collection of APIs and SDKs, [contact Google Maps Platform sales](https://cloud.google.com/contact-maps).

<br />