[android] - style image accessor

platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/MapboxMap.java

@@ -473,6 +473,10 @@ public void removeImage(String name) {
     nativeMapView.removeImage(name);
   }
 
+  public Bitmap getImage(@NonNull String name) {
+    return nativeMapView.getImage(name);
+  }
+
   //
   // MinZoom
   //

platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/NativeMapView.java

@@ -808,6 +808,13 @@ public void removeImage(String name) {
     nativeRemoveImage(name);
   }
 
+  public Bitmap getImage(String name) {
+    if (isDestroyedOn("getImage")) {
+      return null;
+    }
+    return nativeGetImage(name);
+  }
+
   // Feature querying
 
   @NonNull
@@ -1078,6 +1085,8 @@ private native void nativeAddImage(String name, int width, int height, float pix
 
   private native void nativeRemoveImage(String name);
 
+  private native Bitmap nativeGetImage(String name);
+
   private native void nativeUpdatePolygon(long polygonId, Polygon polygon);
 
   private native void nativeUpdatePolyline(long polylineId, Polyline polyline);

platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/ImageTest.java

@@ -0,0 +1,54 @@
+package com.mapbox.mapboxsdk.testapp.style;
+
+import android.graphics.Bitmap;
+import android.graphics.drawable.BitmapDrawable;
+import android.graphics.drawable.Drawable;
+import android.support.test.espresso.UiController;
+import android.support.test.runner.AndroidJUnit4;
+
+import com.mapbox.mapboxsdk.maps.MapboxMap;
+import com.mapbox.mapboxsdk.testapp.R;
+import com.mapbox.mapboxsdk.testapp.action.MapboxMapAction;
+import com.mapbox.mapboxsdk.testapp.activity.BaseActivityTest;
+import com.mapbox.mapboxsdk.testapp.activity.style.RuntimeStyleTestActivity;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
+
+/**
+ * CRUD tests around Image
+ */
+@RunWith(AndroidJUnit4.class)
+public class ImageTest extends BaseActivityTest {
+
+  private static final String IMAGE_ID = "test.image";
+
+  @Override
+  protected Class getActivityClass() {
+    return RuntimeStyleTestActivity.class;
+  }
+
+  @Test
+  public void testAddGetImage() {
+    validateTestSetup();
+    MapboxMapAction.invoke(mapboxMap, new MapboxMapAction.OnInvokeActionListener() {
+      @Override
+      public void onInvokeAction(UiController uiController, MapboxMap mapboxMap) {
+        Drawable drawable = rule.getActivity().getResources().getDrawable(R.drawable.ic_launcher_round);
+        assertTrue(drawable instanceof BitmapDrawable);
+
+        Bitmap bitmapSet = ((BitmapDrawable) drawable).getBitmap();
+        mapboxMap.addImage(IMAGE_ID, bitmapSet);
+
+        Bitmap bitmapGet = mapboxMap.getImage(IMAGE_ID);
+        assertTrue(bitmapGet.sameAs(bitmapSet));
+
+        mapboxMap.removeImage(IMAGE_ID);
+        assertNull(mapboxMap.getImage(IMAGE_ID));
+      }
+    });
+  }
+}

platform/android/src/native_map_view.cpp

@@ -50,6 +50,7 @@
 #include "geometry/lat_lng_bounds.hpp"
 #include "map/camera_position.hpp"
 #include "style/light.hpp"
+#include "bitmap_factory.hpp"
 
 namespace mbgl {
 namespace android {
@@ -1043,6 +1044,14 @@ void NativeMapView::removeImage(JNIEnv& env, jni::String name) {
     map->getStyle().removeImage(jni::Make<std::string>(env, name));
 }
 
+jni::Object<Bitmap> NativeMapView::getImage(JNIEnv& env, jni::String name) {
+    const mbgl::style::Image *image = map->getStyle().getImage(jni::Make<std::string>(env, name));
+    if (image) {
+        return Bitmap::CreateBitmap(env, image->getImage());
+    } else {
+        return jni::Object<Bitmap>();
+    }
+}
 
 void NativeMapView::setPrefetchesTiles(JNIEnv&, jni::jboolean enable) {
     map->setPrefetchZoomDelta(enable ? util::DEFAULT_PREFETCH_ZOOM_DELTA : uint8_t(0));
@@ -1553,6 +1562,7 @@ void NativeMapView::registerNative(jni::JNIEnv& env) {
             METHOD(&NativeMapView::removeSource, "nativeRemoveSource"),
             METHOD(&NativeMapView::addImage, "nativeAddImage"),
             METHOD(&NativeMapView::removeImage, "nativeRemoveImage"),
+            METHOD(&NativeMapView::getImage, "nativeGetImage"),
             METHOD(&NativeMapView::setLatLngBounds, "nativeSetLatLngBounds"),
             METHOD(&NativeMapView::setPrefetchesTiles, "nativeSetPrefetchesTiles"),
             METHOD(&NativeMapView::getPrefetchesTiles, "nativeGetPrefetchesTiles")

platform/android/src/native_map_view.hpp

@@ -24,6 +24,7 @@
 #include "geometry/lat_lng_bounds.hpp"
 #include "map/camera_position.hpp"
 #include "style/light.hpp"
+#include "bitmap.hpp"
 
 #include <exception>
 #include <string>
@@ -253,6 +254,8 @@ class NativeMapView : public RendererBackend, public MapObserver {
 
     void removeImage(JNIEnv&, jni::String);
 
+    jni::Object<Bitmap> getImage(JNIEnv&, jni::String);
+
     void setPrefetchesTiles(JNIEnv&, jni::jboolean);
 
     jni::jboolean getPrefetchesTiles(JNIEnv&);