feat: adding cluster size as title for Markers

Author: kikoso

demo/src/main/java/com/google/maps/android/utils/demo/CustomMarkerClusteringDemoActivity.java

@@ -39,8 +39,10 @@
 import com.google.maps.android.ui.IconGenerator;
 import com.google.maps.android.utils.demo.model.Person;
 
+import java.text.NumberFormat;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Locale;
 import java.util.Random;
 
 /**
@@ -109,12 +111,14 @@ protected void onBeforeClusterRendered(@NonNull Cluster<Person> cluster, @NonNul
             // Draw multiple people.
             // Note: this method runs on the UI thread. Don't spend too much time in here (like in this example).
             markerOptions.icon(getClusterIcon(cluster));
+            markerOptions.title(getLocalizedNumber(cluster.getSize()));
         }
 
         @Override
         protected void onClusterUpdated(@NonNull Cluster<Person> cluster, Marker marker) {
             // Same implementation as onBeforeClusterRendered() (to update cached markers)
             marker.setIcon(getClusterIcon(cluster));
+            marker.setTitle(getLocalizedNumber(cluster.getSize()));
         }
 
         /**
@@ -250,4 +254,9 @@ private LatLng position() {
     private double random(double min, double max) {
         return mRandom.nextDouble() * (max - min) + min;
     }
+
+    private String getLocalizedNumber(int number) {
+        NumberFormat numberFormat = NumberFormat.getInstance(Locale.getDefault());
+        return numberFormat.format(number);
+    }
 }

library/src/main/java/com/google/maps/android/clustering/view/DefaultClusterRenderer.java

@@ -56,11 +56,13 @@
 import com.google.maps.android.ui.IconGenerator;
 import com.google.maps.android.ui.SquareTextView;
 
+import java.text.NumberFormat;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.LinkedList;
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
 import java.util.Queue;
 import java.util.Set;
@@ -906,6 +908,7 @@ protected void onClusterItemUpdated(@NonNull T item, @NonNull Marker marker) {
     protected void onBeforeClusterRendered(@NonNull Cluster<T> cluster, @NonNull MarkerOptions markerOptions) {
         // TODO: consider adding anchor(.5, .5) (Individual markers will overlap more often)
         markerOptions.icon(getDescriptorForCluster(cluster));
+        markerOptions.title(getLocalizedNumber(cluster.getSize()));
     }
 
     /**
@@ -960,6 +963,7 @@ protected void onClusterRendered(@NonNull Cluster<T> cluster, @NonNull Marker ma
     protected void onClusterUpdated(@NonNull Cluster<T> cluster, @NonNull Marker marker) {
         // TODO: consider adding anchor(.5, .5) (Individual markers will overlap more often)
         marker.setIcon(getDescriptorForCluster(cluster));
+        marker.setTitle(getLocalizedNumber(cluster.getSize()));
     }
 
     /**
@@ -1176,4 +1180,9 @@ public void onAnimationUpdate(ValueAnimator valueAnimator) {
             marker.setPosition(position);
         }
     }
+
+    private String getLocalizedNumber(int number) {
+        NumberFormat numberFormat = NumberFormat.getInstance(Locale.getDefault());
+        return numberFormat.format(number);
+    }
 }