Samples: use OkHttp engine, fix #454

vtm-playground/src/org/oscim/stuff/MapzenTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2016 devemux86
+ * Copyright 2016-2017 devemux86
  *
  * This file is part of the OpenScienceMap project (http://www.opensciencemap.org).
  *
@@ -22,6 +22,7 @@ import org.oscim.layers.tile.buildings.BuildingLayer;
 import org.oscim.layers.tile.vector.VectorTileLayer;
 import org.oscim.layers.tile.vector.labeling.LabelLayer;
 import org.oscim.theme.VtmThemes;
+import org.oscim.tiling.source.OkHttpEngine;
 import org.oscim.tiling.source.UrlTileSource;
 import org.oscim.tiling.source.oscimap4.OSciMap4TileSource;
 
@@ -30,6 +31,7 @@ public class MapzenTest extends GdxMapImpl {
     @Override
     public void createLayers() {
         UrlTileSource tileSource = OSciMap4TileSource.builder()
+                .httpFactory(new OkHttpEngine.OkHttpFactory())
                 .url("https://vector.mapzen.com/osm/v0.8/all")
                 .apiKey("vector-tiles-xxxxxxx") // Put a proper API key
                 .build();