Questa pagina illustra un esempio di come aggiungere una mappa 3D di base a un'app Android utilizzando l'SDK Maps 3D per Android. Le istruzioni riportate in questa pagina presuppongono che tu
abbia già completato i passaggi nella
pagina Configurazione e che tu disponga di
quanto segue:
Un progetto Google Cloud con l'SDK Maps 3D per Android abilitato
Una chiave API configurata per l'utilizzo con l'SDK Maps 3D per Android
Un progetto Android Studio configurato per l'utilizzo con l'SDK Maps 3D per Android
Per ulteriori informazioni su questi prerequisiti, vedi
Configurazione.
Parte 1: aggiorna il file di layout (activity_main.xml) per aggiungere il componente Map3DView
Il componente Map3DView è la visualizzazione che esegue il rendering della mappa 3D all'interno dell'app.
I seguenti passaggi aggiungono il componente e configurano lo stato iniziale della
mappa, inclusi la posizione della videocamera e gli attributi correlati:
Apri il file di layout dell'attività principale, che di solito si trova in
app/src/main/res/layout/activity_main.xml.
Nell'elemento principale ConstraintLayout (o nell'elemento di layout principale), aggiungi lo spazio dei nomi XML map3d:
I seguenti passaggi inizializzano il componente Map3DView aggiunto al file activity_main.xml nella Parte 1 e gestiscono gli eventi del ciclo di vita dei componenti:
Apri il file MainActivity.kt, che in genere si trova in
app/src/main/java/com/example/yourpackagename/MainActivity.kt.
Aggiungi le importazioni necessarie per l'SDK Maps 3D per Android:
Nel metodo onCreate, dopo setContentView(...) e il blocco
ViewCompat.setOnApplyWindowInsetsListener, inizializza map3DView,
chiama il relativo metodo del ciclo di vita onCreate e richiedi la mappa in modo asincrono:
Esegui l'override del metodo onMap3DViewReady. Questo callback viene attivato quando la mappa è pronta per essere utilizzata:
overridefunonMap3DViewReady(googleMap3D:GoogleMap3D){// Interact with the googleMap3D object herethis.googleMap3D=googleMap3D// You can now make calls to the googleMap3D object, e.g.,// googleMap3D.cameraController.flyTo(camera { ... })}
Inoltra gli eventi del ciclo di vita dalla tua attività a Map3DView aggiungendo i seguenti override a MainActivity:
Ora che hai aggiornato il layout e l'attività dell'app, puoi creare ed eseguire
l'app per visualizzare la mappa 3D.
Per sincronizzare il progetto con Gradle, seleziona File > Sync Project with Gradle Files (Sincronizza progetto con i file Gradle).
Per creare ed eseguire l'app su un emulatore o un dispositivo fisico, seleziona
Esegui > Esegui.
Se tutto è configurato correttamente, dovresti vedere una mappa 3D visualizzata nella tua
app, centrata vicino alle coordinate specificate nel tuo activity_main.xml.
[null,null,["Ultimo aggiornamento 2025-08-31 UTC."],[],[],null,["# Add a 3D map to your app\n\n\u003cbr /\u003e\n\n| This product or feature is Experimental (pre-GA). Pre-GA products and features might have limited support, and changes to pre-GA products and features might not be compatible with other pre-GA versions. Pre-GA Offerings are covered by the [Google\n| Maps Platform Service Specific Terms](https://cloud.google.com/maps-platform/terms/maps-service-terms). For more information, see the [launch stage descriptions](/maps/launch-stages).\n\n\u003cbr /\u003e\n\nSelect platform: [Android](/maps/documentation/maps-3d/android-sdk/add-a-3d-map \"View this page for the Android platform docs.\") [iOS](/maps/documentation/maps-3d/ios-sdk/add-a-3d-map \"View this page for the iOS platform docs.\") [JavaScript](/maps/documentation/javascript/3d/get-started \"View this page for the JavaScript platform docs.\")\n\n\u003cbr /\u003e\n\nThis page walks through an example of how to add a basic 3D map to an Android\napp using the Maps 3D SDK for Android. The instructions on this page assume that you\nhave already completed the steps in the\n[Setup](/maps/documentation/maps-3d/android-sdk/setup) page and have the\nfollowing:\n\n- A Google Cloud project with the Maps 3D SDK for Android enabled\n- An API key configured to use with the Maps 3D SDK for Android\n- An Android Studio project set up to use with the Maps 3D SDK for Android\n\nFor more information about these prerequisites, see\n[Setup](/maps/documentation/maps-3d/android-sdk/setup).\n\nPart 1: Update Layout File (`activity_main.xml`) to add the `Map3DView` component\n---------------------------------------------------------------------------------\n\nThe `Map3DView` component is the view that renders the 3D map within the app.\nThe following steps add the component and configure the initial state of the\nmap, including the camera position and related attributes:\n| **Note:** The steps in this section assume that you have created and configured your Android Studio project using the process described in [Setup](/maps/documentation/maps-3d/android-sdk/setup), or that you have added a new View activity to an existing project. If you create a new Android Studio project without adding a View activity, your project won't contain an `activity_main.xml` file.\n\n1. Open your main activity's layout file, which is usually located at\n `app/src/main/res/layout/activity_main.xml`.\n\n2. In the root `ConstraintLayout` (or your root layout element), add the `map3d`\n XML namespace:\n\n xmlns:map3d=\"http://schemas.android.com/apk/res-auto\"\n\n3. Delete the default `\u003cTextView\u003e` that displays \"Hello World!\".\n\n4. Add the `Map3DView` component to your layout. You can customize the camera\n position and other attributes:\n\n \u003c?xml version=\"1.0\" encoding=\"utf-8\"?\u003e\n \u003candroidx.constraintlayout.widget.ConstraintLayout xmlns:android=\"http://schemas.android.com/apk/res/android\"\n xmlns:app=\"http://schemas.android.com/apk/res-auto\"\n xmlns:map3d=\"http://schemas.android.com/apk/res-auto\" xmlns:tools=\"http://schemas.android.com/tools\"\n android:id=\"@+id/main\"\n android:layout_width=\"match_parent\"\n android:layout_height=\"match_parent\"\n tools:context=\".MainActivity\"\u003e\n\n \u003ccom.google.android.gms.maps3d.Map3DView\n android:id=\"@+id/map3dView\"\n android:layout_width=\"match_parent\"\n android:layout_height=\"match_parent\"\n map3d:mode=\"hybrid\"\n map3d:centerLat=\"38.544012\"\n map3d:centerLng=\"-107.670428\"\n map3d:centerAlt=\"2427.6\"\n map3d:heading=\"310\"\n map3d:tilt=\"63\"\n map3d:range=\"8266\"\n map3d:roll=\"0\"\n map3d:minAltitude=\"0\"\n map3d:maxAltitude=\"1000000\"\n map3d:minHeading=\"0\"\n map3d:maxHeading=\"360\"\n map3d:minTilt=\"0\"\n map3d:maxTilt=\"90\"\n app:layout_constraintBottom_toBottomOf=\"parent\"\n app:layout_constraintEnd_toEndOf=\"parent\"\n app:layout_constraintStart_toStartOf=\"parent\"\n app:layout_constraintTop_toTopOf=\"parent\" /\u003e\n \u003c/androidx.constraintlayout.widget.ConstraintLayout\u003e\n\nPart 2: Update MainActivity.kt\n------------------------------\n\nThe following steps initialize the `Map3DView` component added to the\n`activity_main.xml` file in Part 1 and manage component lifecycle events:\n\n1. Open your `MainActivity.kt` file, which is usually located at\n `app/src/main/java/com/example/yourpackagename/MainActivity.kt`.\n\n2. Add the necessary imports for the Maps 3D SDK for Android:\n\n import com.google.android.gms.maps3d.GoogleMap3D\n import com.google.android.gms.maps3d.Map3DView\n import com.google.android.gms.maps3d.OnMap3DViewReadyCallback\n\n3. Modify the `MainActivity` class to implement `OnMap3DViewReadyCallback`:\n\n class MainActivity : AppCompatActivity(), OnMap3DViewReadyCallback {\n\n4. Declare variables for `Map3DView` and `GoogleMap3D`:\n\n private lateinit var map3DView: Map3DView\n private var googleMap3D: GoogleMap3D? = null\n\n5. In the `onCreate` method, after `setContentView(...)` and the\n `ViewCompat.setOnApplyWindowInsetsListener` block, initialize the `map3DView`,\n call its `onCreate` lifecycle method, and request the map asynchronously:\n\n override fun onCreate(savedInstanceState: Bundle?) {\n super.onCreate(savedInstanceState)\n enableEdgeToEdge()\n setContentView(R.layout.activity_main)\n ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main)) { v, insets -\u003e\n val systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars())\n v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom)\n insets\n }\n\n map3DView = findViewById(R.id.map3dView)\n map3DView.onCreate(savedInstanceState)\n map3DView.getMap3DViewAsync(this)\n }\n\n6. Override the `onMap3DViewReady` method. This callback is triggered when the\n map is ready to be used:\n\n override fun onMap3DViewReady(googleMap3D: GoogleMap3D) {\n // Interact with the googleMap3D object here\n this.googleMap3D = googleMap3D\n // You can now make calls to the googleMap3D object, e.g.,\n // googleMap3D.cameraController.flyTo(camera { ... })\n }\n\n7. Forward lifecycle events from your Activity to the `Map3DView` by adding the\n following overrides to the `MainActivity`:\n\n override fun onStart() {\n super.onStart()\n map3DView.onStart()\n }\n\n override fun onResume() {\n super.onResume()\n map3DView.onResume()\n }\n\n override fun onPause() {\n map3DView.onPause()\n super.onPause()\n }\n\n override fun onStop() {\n map3DView.onStop()\n super.onStop()\n }\n\n override fun onDestroy() {\n map3DView.onDestroy()\n super.onDestroy()\n }\n\n override fun onSaveInstanceState(outState: Bundle) {\n super.onSaveInstanceState(outState)\n map3DView.onSaveInstanceState(outState)\n }\n\n override fun onLowMemory() {\n super.onLowMemory()\n map3DView.onLowMemory()\n }\n\nPart 3: Sync Gradle and Run\n---------------------------\n\nNow that you've updated your app's layout and activity, you can build and run\nthe app to see the 3D map view.\n\n1. To sync your project with Gradle, select **File \\\u003e Sync Project with Gradle Files.**\n\n2. To build and run your app on an emulator or a physical device, select\n **Run \\\u003e Run**.\n\nIf everything is configured correctly, you should see a 3D map displayed in your\napp, centered near the coordinates specified in your `activity_main.xml`.\n\nNext steps\n----------\n\nNow that you've added a basic 3D map to your app, you can explore more advanced\nfeatures of the Maps 3D SDK for Android, such as\n[camera path animations](/maps/documentation/maps-3d/android-sdk/custom-camera-paths),\n[3D markers](/maps/documentation/maps-3d/android-sdk/add-a-marker), or\n[polygons](/maps/documentation/maps-3d/android-sdk/add-polygons)."]]