From 779fc8aeeed7a76022aa4b14e5e72d62745dd2b6 Mon Sep 17 00:00:00 2001
From: Ivo van Dongen <info@ivovandongen.nl>
Date: Tue, 19 Sep 2017 10:57:10 +0300
Subject: [android] example custom layer - add context lost callback

---
 .../testapp/activity/customlayer/CustomLayerActivity.java         | 1 +
 .../mapboxsdk/testapp/model/customlayer/ExampleCustomLayer.java   | 1 +
 platform/android/src/example_custom_layer.cpp                     | 8 ++++++++
 3 files changed, 10 insertions(+)

diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/customlayer/CustomLayerActivity.java b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/customlayer/CustomLayerActivity.java
index dde22db2db..1b49e9e3d6 100644
--- a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/customlayer/CustomLayerActivity.java
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/customlayer/CustomLayerActivity.java
@@ -69,6 +69,7 @@ public class CustomLayerActivity extends AppCompatActivity {
         ExampleCustomLayer.createContext(),
         ExampleCustomLayer.InitializeFunction,
         ExampleCustomLayer.RenderFunction,
+        ExampleCustomLayer.ContextLostFunction, // Optional
         ExampleCustomLayer.DeinitializeFunction);
       mapboxMap.addLayerBelow(customLayer, "building");
       fab.setImageResource(R.drawable.ic_layers_clear);
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/model/customlayer/ExampleCustomLayer.java b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/model/customlayer/ExampleCustomLayer.java
index 8c049d7730..aaad2f04ab 100644
--- a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/model/customlayer/ExampleCustomLayer.java
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/model/customlayer/ExampleCustomLayer.java
@@ -11,5 +11,6 @@ public class ExampleCustomLayer {
 
   public static long InitializeFunction;
   public static long RenderFunction;
+  public static long ContextLostFunction;
   public static long DeinitializeFunction;
 }
diff --git a/platform/android/src/example_custom_layer.cpp b/platform/android/src/example_custom_layer.cpp
index c55c9c3527..1ed68d0835 100644
--- a/platform/android/src/example_custom_layer.cpp
+++ b/platform/android/src/example_custom_layer.cpp
@@ -92,6 +92,10 @@ void nativeRender(void *context, const mbgl::style::CustomLayerRenderParameters&
     reinterpret_cast<ExampleCustomLayer*>(context)->render();
 }
 
+void nativeContextLost(void */*context*/) {
+    mbgl::Log::Info(mbgl::Event::General, "nativeContextLost");
+}
+
 void nativeDenitialize(void *context) {
     mbgl::Log::Info(mbgl::Event::General, "nativeDeinitialize");
     delete reinterpret_cast<ExampleCustomLayer*>(context);
@@ -122,6 +126,10 @@ extern "C" JNIEXPORT jint JNICALL JNI_OnLoad(JavaVM *vm, void *) {
         env->GetStaticFieldID(customLayerClass, "RenderFunction", "J"),
         reinterpret_cast<jlong>(nativeRender));
 
+    env->SetStaticLongField(customLayerClass,
+        env->GetStaticFieldID(customLayerClass, "ContextLostFunction", "J"),
+        reinterpret_cast<jlong>(nativeContextLost));
+
     env->SetStaticLongField(customLayerClass,
         env->GetStaticFieldID(customLayerClass, "DeinitializeFunction", "J"),
         reinterpret_cast<jlong>(nativeDenitialize));
-- 
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