> For the complete documentation index, see [llms.txt](https://docs.mapbox.com/android/ja/navigation/v2/llms.txt)

# Maps

While applications using the Mapbox Navigation SDK for Android don't *have* to include a map, many use cases will require maps to provide an appropriate navigation experience to your users. After you [initialize the Navigation SDK](https://docs.mapbox.com/android/ja/navigation/v2/guides/get-started/initialization/), this guide will help you understand how the Navigation SDK uses the Mapbox Maps SDK and what you need to do to include a map in your application.

By default, the Navigation SDK comes with access to the [Mapbox Maps SDK for Android](https://docs.mapbox.com/android/ja/maps/guides/) to display routes on a map and show the user's location on the map throughout their trip to provide both navigation-related context and nearby places that may be of interest to the driver.

## Display a map

To add a map to your application, use the Map SDK's [`MapView`](https://docs.mapbox.com/android/maps/api/latest/mapbox-maps-android/com.mapbox.maps/-map-view/). Open the activity's XML layout file and add the following:

```xml
<com.mapbox.maps.MapView
  android:id="@+id/mapView"
  android:layout_width="0dp"
  android:layout_height="0dp"
  app:layout_constraintBottom_toBottomOf="parent"
  app:layout_constraintEnd_toEndOf="parent"
  app:layout_constraintStart_toStartOf="parent"
  app:layout_constraintTop_toTopOf="parent" />
```

Read more about handling the `MapView` lifecycle in the Maps SDK [Installation](https://docs.mapbox.com/android/ja/maps/guides/install#part-3-add-a-map) guide.

## Use map-related UI components

The Navigation SDK offers several map-related UI components that can enhance the navigation experience for your users.

### Camera

The `NavigationCamera` is a class that tries to simplify management of the map's camera object in typical navigation scenarios including an overview state (looking at the device location from above) and a following state (zoomed into the device location facing the direction of travel and moving as the location updates).

### Components within the map

Whether your users are using your application in free-drive mode without a set route or for turn-by-turn navigation, the SDK allows you to show the user's location updating in real time on a map. Read more in the [Device location](https://docs.mapbox.com/android/ja/navigation/v2/guides/device-location/) guide.

If the user is using turn-by-turn navigation, the SDK also provides several components that can be added to the map to orient the user:

-   **Route line**: Invoke the Route Line API to render a route line on a map. See the [Draw route lines on a map](https://docs.mapbox.com/android/ja/navigation/v2/examples/render-route-line/) example.
-   **Route arrow**: Invoke the Route Arrow API when route progress changes to determine when to show an arrow on the route line.
-   **Buildings:** Invoke the Buildings API when route progress changes to highlight the building upon arrival at a waypoint or final destination. See the [Render building extrusion on arrival](https://docs.mapbox.com/android/ja/navigation/v2/examples/show-building-extrusions/) example.
-   **Signboards**: Invoke the Signboard API to include additional visual guidance to the map. Read more in the [Extended visual guidance](https://docs.mapbox.com/android/ja/navigation/v2/guides/ui-components/signboards/) guide.

## Customize map behavior

Because the Navigation SDK includes the full Maps SDK as a dependency, you can completely customize when and how maps are used in your application. For more information on how the Maps SDK works, see the [Maps SDK documentation](https://docs.mapbox.com/android/ja/maps/guides/).