googlemaps-samples · dkhawk · Aug 18, 2026
diff --git a/ApiDemos/project/common-ui/src/main/res/drawable/bg_marker_badge.xml b/ApiDemos/project/common-ui/src/main/res/drawable/bg_marker_badge.xml
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+ Copyright 2026 Google LLC
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="oval">
+    <solid android:color="@android:color/white" />
+    <stroke
+        android:width="2dp"
+        android:color="#3DDC84" />
+    <size
+        android:width="44dp"
+        android:height="44dp" />
+</shape>
diff --git a/ApiDemos/project/java-app/src/main/java/com/example/mapdemo/AdvancedMarkersDemoActivity.java b/ApiDemos/project/java-app/src/main/java/com/example/mapdemo/AdvancedMarkersDemoActivity.java
@@ -1,4 +1,4 @@
-// Copyright 2023 Google LLC
+// Copyright 2026 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -17,10 +17,13 @@
 import android.os.Bundle;
 import android.util.Log;
 import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
 import android.widget.TextView;
 
 import androidx.activity.EdgeToEdge;
 import androidx.appcompat.app.AppCompatActivity;
+import com.example.common_ui.R;
 import androidx.core.graphics.Insets;
 import androidx.core.view.ViewCompat;
 import androidx.core.view.WindowInsetsCompat;
@@ -33,6 +36,7 @@
 import com.google.android.gms.maps.model.AdvancedMarkerOptions;
 import com.google.android.gms.maps.model.BitmapDescriptorFactory;
 import com.google.android.gms.maps.model.LatLng;
+import com.google.android.gms.maps.model.LatLngBounds;
 import com.google.android.gms.maps.model.MapCapabilities;
 import com.google.android.gms.maps.model.Marker;
 import com.google.android.gms.maps.model.PinConfig;
@@ -114,17 +118,33 @@ protected void onCreate(Bundle savedInstanceState) {
 
     @Override
     public void onMapReady(GoogleMap map) {
-        map.moveCamera(CameraUpdateFactory.newLatLngZoom(SINGAPORE, ZOOM_LEVEL));
+        LatLngBounds bounds = new LatLngBounds.Builder()
+                .include(SINGAPORE)
+                .include(KUALA_LUMPUR)
+                .include(JAKARTA)
+                .include(BANGKOK)
+                .include(MANILA)
+                .include(HO_CHI_MINH_CITY)
+                .build();
+        map.moveCamera(CameraUpdateFactory.newLatLngBounds(bounds, 120));
 
         MapCapabilities capabilities = map.getMapCapabilities();
         Log.d(TAG, "Are advanced markers enabled? " + capabilities.isAdvancedMarkersAvailable());
 
-        // This sample sets a view as the iconView for the Advanced Marker
-        TextView textView = new TextView(this);
-        textView.setText("Hello!");
-        Marker advancedMarkerView = map.addMarker(new AdvancedMarkerOptions()
+        // 1. Custom View as iconView (Framed circular badge with Android logo)
+        ImageView iconImageView = new ImageView(this);
+        iconImageView.setImageResource(R.drawable.ic_android);
+        iconImageView.setColorFilter(Color.parseColor("#3DDC84")); // Android Green
+        iconImageView.setBackgroundResource(R.drawable.bg_marker_badge);
+        int padding = (int) (8 * getResources().getDisplayMetrics().density);
+        iconImageView.setPadding(padding, padding, padding, padding);
+        int size = (int) (44 * getResources().getDisplayMetrics().density);
+        iconImageView.setLayoutParams(new ViewGroup.LayoutParams(size, size));
+
+        map.addMarker(new AdvancedMarkerOptions()
                 .position(SINGAPORE)
-                .iconView(textView)
+                .iconView(iconImageView)
+                .title("Singapore (Custom Framed Badge)")
                 .zIndex(1f));
 
         // This uses PinConfig.Builder to create an instance of PinConfig.

diff --git a/.../project/java-app/src/main/java/com/example/mapdemo/DataDrivenDatasetStylingActivity.java b/.../project/java-app/src/main/java/com/example/mapdemo/DataDrivenDatasetStylingActivity.java
@@ -1,4 +1,4 @@
-// Copyright 2025 Google LLC
+// Copyright 2026 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -40,6 +40,7 @@
 import com.google.android.gms.maps.model.FeatureStyle;
 import com.google.android.gms.maps.model.FeatureType;
 import com.google.android.gms.maps.model.LatLng;
+import com.google.android.gms.maps.model.LatLngBounds;
 import com.google.android.gms.maps.model.MapCapabilities;
 
 import java.util.List;
@@ -58,8 +59,7 @@ public class DataDrivenDatasetStylingActivity extends SamplesBaseActivity implem
     private record DataSet(
             String label,
             String datasetId,
-            LatLng location,
-            float zoomLevel,
+            LatLngBounds bounds,
             DataDrivenDatasetStylingActivity.DataSet.StylingCallback callback) {
             public interface StylingCallback {
                 void styleDatasetLayer();
@@ -71,25 +71,19 @@ public interface StylingCallback {
      * Each DataSet contains:
      *  - A human-readable name (e.g., "Boulder", "New York").
      *  - A unique Dataset ID, which should correspond to a dataset id in the Datasets console tab.
-     *  - The central latitude and longitude coordinates (LatLng) of the location.
+     *  - The LatLngBounds of the dataset area.
      *  - A styling function (method reference) that defines how to style the data from that dataset on a map.
-     * <p>
-     * This array is used to configure which datasets are available for display and how they should be presented.
-     * Each element of the array should be a new DataSet object.
-     * Modify the constructor arguments of each DataSet to define your specific data and styles.
-     * The styling function will receive a `Layer` to which it can add elements.
-     * <p>
-     * Example:
-     *   - `new DataSet("Boulder", "Boulder-DataSet-Id", new LatLng(40.0150, -105.2705), this::styleBoulderDatasetLayer)`
-     *     This creates a DataSet for Boulder, identified by "Boulder-DataSet-Id", centered on the given coordinates,
-     *     and styled using the `styleBoulderDatasetLayer` method.
-     * <p>
-     * Note: We have use the secrets plugin to allow us to configure the Dataset IDs in our secrets.properties file.
      */
     private final DataSet[] dataSets = new DataSet[] {
-            new DataSet("Boulder", BuildConfig.BOULDER_DATASET_ID, new LatLng(40.0150, -105.2705), 11f, this::styleBoulderDatasetLayer),
-            new DataSet("New York", BuildConfig.NEW_YORK_DATASET_ID, new LatLng(40.786244, -73.962684), 14f, this::styleNYCDatasetLayer),
-            new DataSet("Kyoto", BuildConfig.KYOTO_DATASET_ID, new LatLng(35.005081, 135.764385), 13.5f, this::styleKyotoDatasetsLayer),
+            new DataSet("Boulder", BuildConfig.BOULDER_DATASET_ID,
+                    new LatLngBounds(new LatLng(39.920, -105.340), new LatLng(40.090, -105.210)),
+                    this::styleBoulderDatasetLayer),
+            new DataSet("New York", BuildConfig.NEW_YORK_DATASET_ID,
+                    new LatLngBounds(new LatLng(40.7640, -73.9820), new LatLng(40.8000, -73.9490)),
+                    this::styleNYCDatasetLayer),
+            new DataSet("Kyoto", BuildConfig.KYOTO_DATASET_ID,
+                    new LatLngBounds(new LatLng(34.9700, 135.7200), new LatLng(35.0400, 135.8000)),
+                    this::styleKyotoDatasetsLayer),
     };
 
     private DataSet findDataSetByLabel(String label) {
@@ -176,14 +170,19 @@ private void switchDataSet(String label) {
                             .build()
             );
             dataSet.callback.styleDatasetLayer();
-            centerMapOnLocation(dataSet.location(), dataSet.zoomLevel());
+            centerMapOnBounds(dataSet.bounds());
         }
     }
 
     @Override
     public void onMapReady(@NonNull GoogleMap googleMap) {
         this.map = googleMap;
 
+        googleMap.setOnCameraIdleListener(() -> {
+            com.google.android.gms.maps.model.CameraPosition cp = googleMap.getCameraPosition();
+            Log.i(TAG, "CAMERA_PARAMS: target=LatLng(" + cp.target.latitude + ", " + cp.target.longitude + "), zoom=" + cp.zoom + "f, tilt=" + cp.tilt + "f, bearing=" + cp.bearing + "f");
+        });
+
         MapCapabilities capabilities = map.getMapCapabilities();
         Log.d(TAG, "Data-driven Styling is available: " + capabilities.isDataDrivenStylingAvailable());
         if (!capabilities.isDataDrivenStylingAvailable()) {
@@ -364,8 +363,8 @@ private void styleBoulderDatasetLayer() {
     }
 
 
-    private void centerMapOnLocation(LatLng location, float zoomLevel) {
-        map.moveCamera(CameraUpdateFactory.newLatLngZoom(location, zoomLevel));
+    private void centerMapOnBounds(LatLngBounds bounds) {
+        map.animateCamera(CameraUpdateFactory.newLatLngBounds(bounds, 80));
     }
 
     @Override

diff --git a/ApiDemos/project/java-app/src/main/java/com/example/mapdemo/GroundOverlayDemoActivity.java b/ApiDemos/project/java-app/src/main/java/com/example/mapdemo/GroundOverlayDemoActivity.java
@@ -1,4 +1,4 @@
-// Copyright 2020 Google LLC
+// Copyright 2026 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -23,6 +23,7 @@
 import com.google.android.gms.maps.model.GroundOverlay;
 import com.google.android.gms.maps.model.GroundOverlayOptions;
 import com.google.android.gms.maps.model.LatLng;
+import com.google.android.gms.maps.model.LatLngBounds;
 
 import android.graphics.Point;
 import android.os.Bundle;
@@ -51,6 +52,10 @@ public class GroundOverlayDemoActivity extends SamplesBaseActivity
     private static final LatLng NEWARK = new LatLng(40.714086, -74.228697);
     private static final LatLng NEAR_NEWARK =
         new LatLng(NEWARK.latitude - 0.001, NEWARK.longitude - 0.025);
+    static final LatLngBounds OVERLAY_BOUNDS = new LatLngBounds(
+        new LatLng(40.7050, -74.2600),
+        new LatLng(40.7800, -74.1200)
+    );
 
     private final List<BitmapDescriptor> images = new ArrayList<>();
 
@@ -84,7 +89,7 @@ protected void onCreate(Bundle savedInstanceState) {
         setContentView(binding.getRoot());
 
         binding.transparencySeekBar.setMax(TRANSPARENCY_MAX);
-        binding.transparencySeekBar.setProgress(0);
+        binding.transparencySeekBar.setProgress(25);
 
         // Set up programmatic click listeners for the buttons.
         binding.switchImage.setOnClickListener(v -> switchImage());
@@ -106,10 +111,8 @@ public void onMapReady(GoogleMap map) {
         // Register a listener to respond to clicks on GroundOverlays.
         map.setOnGroundOverlayClickListener(this);
 
-        // Move the camera to the Newark area.
-        map.moveCamera(CameraUpdateFactory.newLatLngZoom(NEWARK, 11));
-
-        map.moveCamera(CameraUpdateFactory.scrollBy(100f, 100f));
+        // Move the camera to frame the Newark overlays with padding.
+        map.moveCamera(CameraUpdateFactory.newLatLngBounds(OVERLAY_BOUNDS, 80));
 
         map.setOnMapClickListener(ll -> {
             Point point = mMap.getProjection().toScreenLocation(ll);
@@ -141,7 +144,8 @@ public void onMapReady(GoogleMap map) {
         // Add a large overlay at Newark on top of the smaller overlay.
         groundOverlay = map.addGroundOverlay(new GroundOverlayOptions()
                 .image(images.get(currentEntry)).anchor(0, 1)
-                .position(NEWARK, 8600f, 6500f));
+                .position(NEWARK, 8600f, 6500f)
+                .transparency((float) binding.transparencySeekBar.getProgress() / (float) TRANSPARENCY_MAX));
         groundOverlay.setTag(images.get(currentEntry));
 
         binding.transparencySeekBar.setOnSeekBarChangeListener(this);