setting up initial boilerplate

MapboxAndroidDemo/src/global/java/com/mapbox/mapboxandroiddemo/MainActivity.java

@@ -74,6 +74,7 @@
 import com.mapbox.mapboxandroiddemo.examples.javaservices.SimplifyPolylineActivity;
 import com.mapbox.mapboxandroiddemo.examples.javaservices.StaticImageActivity;
 import com.mapbox.mapboxandroiddemo.examples.javaservices.TilequeryActivity;
+import com.mapbox.mapboxandroiddemo.examples.javaservices.TurfPhysicalCircleActivity;
 import com.mapbox.mapboxandroiddemo.examples.labs.AnimatedImageGifActivity;
 import com.mapbox.mapboxandroiddemo.examples.labs.AnimatedMarkerActivity;
 import com.mapbox.mapboxandroiddemo.examples.labs.CalendarIntegrationActivity;
@@ -934,6 +935,14 @@ private void initializeModels() {
       null,
       R.string.activity_java_services_tilequery_url, false, BuildConfig.MIN_SDK_VERSION));
 
+    exampleItemModels.add(new ExampleItemModel(
+      R.id.nav_java_services,
+      R.string.activity_java_services_turf_physical_circle_title,
+      R.string.activity_java_services_turf_physical_circle_description,
+      new Intent(MainActivity.this, TurfPhysicalCircleActivity.class),
+      null,
+      R.string.activity_java_services_tilequery_url, false, BuildConfig.MIN_SDK_VERSION));
+
     exampleItemModels.add(new ExampleItemModel(
       R.id.nav_snapshot_image_generator,
       R.string.activity_image_generator_snapshot_notification_title,

MapboxAndroidDemo/src/main/AndroidManifest.xml

@@ -140,6 +140,13 @@
                 android:name="android.support.PARENT_ACTIVITY"
                 android:value="com.mapbox.mapboxandroiddemo.MainActivity" />
         </activity>
+        <activity
+            android:name=".examples.javaservices.TurfPhysicalCircleActivity"
+            android:label="">
+            <meta-data
+                android:name="android.support.PARENT_ACTIVITY"
+                android:value="com.mapbox.mapboxandroiddemo.MainActivity" />
+        </activity>
         <activity
             android:name=".examples.labs.SnakingDirectionsRouteActivity"
             android:label="@string/activity_labs_snaking_directions_route_title">

MapboxAndroidDemo/src/main/java/com/mapbox/mapboxandroiddemo/examples/javaservices/TurfPhysicalCircleActivity.java

@@ -0,0 +1,102 @@
+package com.mapbox.mapboxandroiddemo.examples.javaservices;
+
+import android.graphics.Color;
+import android.os.Bundle;
+import android.support.annotation.NonNull;
+import android.support.v7.app.AppCompatActivity;
+import android.widget.Toast;
+
+import com.mapbox.mapboxandroiddemo.R;
+import com.mapbox.mapboxsdk.Mapbox;
+import com.mapbox.mapboxsdk.maps.MapView;
+import com.mapbox.mapboxsdk.maps.MapboxMap;
+import com.mapbox.mapboxsdk.maps.OnMapReadyCallback;
+import com.mapbox.mapboxsdk.maps.Style;
+import com.mapbox.mapboxsdk.style.layers.FillLayer;
+import com.mapbox.mapboxsdk.style.sources.GeoJsonSource;
+
+/**
+ * Use {@link TurfTransformation#circle(Point, double, int, String)} to draw a circle
+ * at a center coordinate with it's radius specified in physical units (i.e. "miles")
+ */
+public class TurfPhysicalCircleActivity extends AppCompatActivity {
+  private MapView mapView;
+  private MapboxMap mapboxMap;
+
+  @Override
+  protected void onCreate(Bundle savedInstanceState) {
+    super.onCreate(savedInstanceState);
+
+
+    // Mapbox access token is configured here. This needs to be called either in your application
+    // object or in the same activity which contains the mapview.
+    Mapbox.getInstance(this, getString(R.string.access_token));
+
+    // This contains the MapView in XML and needs to be called after the access token is configured.
+    setContentView(R.layout.activity_lab_circle_physical_units);
+
+    mapView = findViewById(R.id.mapView);
+    mapView.onCreate(savedInstanceState);
+
+    mapView.getMapAsync(new OnMapReadyCallback() {
+      @Override
+      public void onMapReady(@NonNull MapboxMap mapboxMap) {
+        TurfPhysicalCircleActivity.this.mapboxMap = mapboxMap;
+
+        mapboxMap.setStyle(Style.LIGHT, new Style.OnStyleLoaded() {
+            @Override
+            public void onStyleLoaded(@NonNull Style style) {
+
+              // Do example things here
+
+            }
+          }
+        );
+      }
+    });
+
+  }
+
+  // Add the mapView lifecycle to the activity's lifecycle methods
+  @Override
+  public void onResume() {
+    super.onResume();
+    mapView.onResume();
+  }
+
+  @Override
+  protected void onStart() {
+    super.onStart();
+    mapView.onStart();
+  }
+
+  @Override
+  protected void onStop() {
+    super.onStop();
+    mapView.onStop();
+  }
+
+  @Override
+  public void onPause() {
+    super.onPause();
+    mapView.onPause();
+  }
+
+  @Override
+  public void onLowMemory() {
+    super.onLowMemory();
+    mapView.onLowMemory();
+  }
+
+  @Override
+  protected void onDestroy() {
+    super.onDestroy();
+    mapView.onDestroy();
+  }
+
+  @Override
+  protected void onSaveInstanceState(Bundle outState) {
+    super.onSaveInstanceState(outState);
+    mapView.onSaveInstanceState(outState);
+  }
+}

MapboxAndroidDemo/src/main/res/layout/activity_lab_circle_physical_units.xml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<android.support.design.widget.CoordinatorLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:mapbox="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".examples.javaservices.TurfPhysicalCircleActivity">
+
+    <com.mapbox.mapboxsdk.maps.MapView
+        android:id="@+id/mapView"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        mapbox:mapbox_cameraTargetLat="35.677669"
+        mapbox:mapbox_cameraTargetLng="139.76346"
+        mapbox:mapbox_cameraZoom="13.5"/>
+
+    <android.support.design.widget.FloatingActionButton
+        android:id="@+id/fab_unit_toggle"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="end|bottom"
+        android:layout_margin="16dp"
+        android:src="@drawable/ic_swap_horiz_white_24dp"
+        tools:backgroundTint="@color/colorPrimaryDark"/>
+
+</android.support.design.widget.CoordinatorLayout>

MapboxAndroidDemo/src/main/res/values/descriptions_strings.xml

@@ -81,6 +81,7 @@
     <string name="activity_java_services_geocoding_description">Use the Geocoding API to receive information about specific coordinates.</string>
     <string name="activity_java_services_isochrone_description">Use the Isochrone API to receive information about how far you can travel within a given time.</string>
     <string name="activity_java_services_tilequery_description">Use the Tilequery API to search for features in a tileset. This example queries for up to 10 buildings which are within 50 meters of the single map click location.</string>
+    <string name="activity_java_services_turf_physical_circle_description">Use Turf to generate a circle with a radius expressed in physical units (e.g. miles).</string>
     <string name="activity_plugins_traffic_plugin_description">Use the traffic plugin to display live car congestion data on top of a map.</string>
     <string name="activity_plugins_building_plugin_description">Use the building plugin to easily display 3D building height</string>
     <string name="activity_plugins_geojson_plugin_description">Easily retrieve GeoJSON data from a url, asset, or path</string>

MapboxAndroidDemo/src/main/res/values/titles_strings.xml

@@ -80,6 +80,7 @@
     <string name="activity_java_services_geocoding_title">Make a geocode request</string>
     <string name="activity_java_services_isochrone_title">Make a isochrone request</string>
     <string name="activity_java_services_tilequery_title">Make a tilequery request</string>
+    <string name="activity_java_services_turf_physical_circle_title">Define a circle in physical units</string>
     <string name="activity_plugins_traffic_plugin_title">Display real-time traffic</string>
     <string name="activity_plugins_building_plugin_title">Display buildings in 3D</string>
     <string name="activity_plugins_localization_plugin_title">Change map text to device language</string>