[android] - simple JNI Style class

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

@@ -20,6 +20,8 @@
 
 public class Style {
 
+  private long nativePtr;
+
   // todo remove NativeMapView facade
   private NativeMapView nativeMapView;
 
@@ -28,7 +30,7 @@ public class Style {
 
   // todo make private
   Style() {
-
+    initialize();
   }
 
   // todo remove
@@ -398,6 +400,15 @@ public String getJson() {
     return json;
   }
 
+  //
+  // Native methods
+  //
+
+  private native void initialize();
+
+  @Override
+  protected native void finalize() throws Throwable;
+
   //
   // Constants
   //

platform/android/config.cmake

@@ -198,6 +198,8 @@ add_library(mbgl-android STATIC
     platform/android/src/style/position.hpp
     platform/android/src/style/light.cpp
     platform/android/src/style/light.hpp
+    platform/android/src/style/style.cpp
+    platform/android/src/style/style.hpp
 
     # FileSource holder
     platform/android/src/file_source.cpp

platform/android/src/jni.cpp

@@ -49,6 +49,7 @@
 #include "style/layers/layers.hpp"
 #include "style/sources/source.hpp"
 #include "style/light.hpp"
+#include "style/style.hpp"
 #include "snapshotter/map_snapshotter.hpp"
 #include "snapshotter/map_snapshot.hpp"
 #include "text/local_glyph_rasterizer_jni.hpp"
@@ -170,6 +171,7 @@ void registerNatives(JavaVM *vm) {
     ExponentialStops::registerNative(env);
     IdentityStops::registerNative(env);
     IntervalStops::registerNative(env);
+    Style::registerNative(env);
 
     // Map
     CameraPosition::registerNative(env);

platform/android/src/style/style.cpp

@@ -0,0 +1,32 @@
+#include "style.hpp"
+
+namespace mbgl {
+namespace android {
+
+Style::Style(jni::JNIEnv &) {
+
+}
+
+Style::~Style() {
+}
+
+jni::Class<Style> Style::javaClass;
+
+void Style::registerNative(jni::JNIEnv& env) {
+    //Register classes
+    Style::javaClass = *jni::Class<Style>::Find(env).NewGlobalRef(env).release();
+
+    #define METHOD(MethodPtr, name) jni::MakeNativePeerMethod<decltype(MethodPtr), (MethodPtr)>(name)
+
+    // Register the peer
+    jni::RegisterNativePeer<Style>(
+        env, Style::javaClass, "nativePtr",
+        std::make_unique<Style, JNIEnv&>,
+        "initialize",
+        "finalize"
+);
+}
+
+
+} // namespace mbgl
+} // namespace android

platform/android/src/style/style.hpp

@@ -0,0 +1,33 @@
+#pragma once
+
+#include <mbgl/style/style.hpp>
+
+#include <jni/jni.hpp>
+
+namespace mbgl {
+namespace android {
+
+/**
+ * Peer class for the Android Style holder.
+ */
+class Style {
+public:
+
+    // TODO move to style package
+    static constexpr auto Name() { return "com/mapbox/mapboxsdk/maps/Style"; };
+
+    Style(jni::JNIEnv &);
+
+    ~Style();
+
+    static jni::Class<Style> javaClass;
+
+    // TODO add methods
+    static void registerNative(jni::JNIEnv &);
+
+private:
+
+};
+
+}
+}