From 8448b2717d4bf77856306495ca89132dbe0fc521 Mon Sep 17 00:00:00 2001
From: tobrun <tobrun.van.nuland@gmail.com>
Date: Tue, 12 Jun 2018 10:35:47 +0200
Subject: [android] - example of integrating forLanguageTag

---
 platform/android/config.cmake            |  4 +++-
 platform/android/src/jni.cpp             |  2 ++
 platform/android/src/local.cpp           | 19 +++++++++++++++++++
 platform/android/src/local.hpp           | 24 ++++++++++++++++++++++++
 platform/android/src/native_map_view.cpp |  4 ++++
 5 files changed, 52 insertions(+), 1 deletion(-)
 create mode 100644 platform/android/src/local.cpp
 create mode 100644 platform/android/src/local.hpp

diff --git a/platform/android/config.cmake b/platform/android/config.cmake
index c25e48de05..6d418ef7d2 100644
--- a/platform/android/config.cmake
+++ b/platform/android/config.cmake
@@ -53,7 +53,9 @@ macro(mbgl_platform_core)
         PRIVATE platform/android/src/bitmap_factory.cpp
         PRIVATE platform/android/src/bitmap_factory.hpp
         PRIVATE platform/android/src/image.cpp
-
+        PRIVATE platform/android/src/local.hpp
+        PRIVATE platform/android/src/local.cpp
+        
         # Thread pool
         PRIVATE platform/default/mbgl/util/shared_thread_pool.cpp
         PRIVATE platform/default/mbgl/util/shared_thread_pool.hpp
diff --git a/platform/android/src/jni.cpp b/platform/android/src/jni.cpp
index 2f6ed96ab0..542dc56415 100755
--- a/platform/android/src/jni.cpp
+++ b/platform/android/src/jni.cpp
@@ -48,6 +48,7 @@
 #include "snapshotter/map_snapshot.hpp"
 #include "text/local_glyph_rasterizer_jni.hpp"
 #include "java/lang.hpp"
+#include "local.hpp"
 
 namespace mbgl {
 namespace android {
@@ -159,6 +160,7 @@ void registerNatives(JavaVM *vm) {
     // Bitmap
     Bitmap::registerNative(env);
     BitmapFactory::registerNative(env);
+    Locale::registerNative(env);
 
     // Style
     TransitionOptions::registerNative(env);
diff --git a/platform/android/src/local.cpp b/platform/android/src/local.cpp
new file mode 100644
index 0000000000..4594833c95
--- /dev/null
+++ b/platform/android/src/local.cpp
@@ -0,0 +1,19 @@
+#include "local.hpp"
+
+namespace mbgl {
+namespace android {
+
+void Locale::registerNative(jni::JNIEnv& env) {
+    _class = *jni::Class<Locale>::Find(env).NewGlobalRef(env).release();
+}
+
+jni::Class<Locale> Locale::_class;
+
+jni::Object<Locale> Locale::ForLanguageTag(jni::JNIEnv& env, jni::String languageTag) {
+    using Signature = jni::Object<Locale>(jni::String);
+    auto method = _class.GetStaticMethod<Signature>(env, "forLanguageTag");
+    return _class.Call(env, method, languageTag);
+}
+
+} // namespace android
+} // namespace mbgl
diff --git a/platform/android/src/local.hpp b/platform/android/src/local.hpp
new file mode 100644
index 0000000000..55e50078c8
--- /dev/null
+++ b/platform/android/src/local.hpp
@@ -0,0 +1,24 @@
+#pragma once
+
+#include <jni/jni.hpp>
+
+#include "local.hpp"
+
+namespace mbgl {
+namespace android {
+
+class Locale {
+public:
+    static constexpr auto Name() {
+        return "java/util/Locale";
+    };
+    static void registerNative(jni::JNIEnv&);
+
+    static jni::Object<Locale> ForLanguageTag(jni::JNIEnv&, jni::String languageTag);
+
+private:
+    static jni::Class<Locale> _class;
+};
+
+} // namespace android
+} // namespace mbgl
diff --git a/platform/android/src/native_map_view.cpp b/platform/android/src/native_map_view.cpp
index eecb76213b..448f0c85ce 100755
--- a/platform/android/src/native_map_view.cpp
+++ b/platform/android/src/native_map_view.cpp
@@ -52,6 +52,7 @@
 #include  "map/image.hpp"
 #include "style/light.hpp"
 #include "bitmap_factory.hpp"
+#include "local.hpp"
 
 namespace mbgl {
 namespace android {
@@ -84,6 +85,9 @@ NativeMapView::NativeMapView(jni::JNIEnv& _env,
                                                   static_cast<uint32_t>(height) }, pixelRatio,
                                       fileSource, *threadPool, MapMode::Continuous,
                                       ConstrainMode::HeightOnly, ViewportMode::Default);
+
+    auto locale = Locale::ForLanguageTag(_env, jni::Make<jni::String>(_env, "en"));
+    assert(locale);
 }
 
 /**
-- 
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