title: Mapsforge simplest map viewer - map not rendered with default theme
body: <p>I'm trying to run the example of the simplest map viewer from mapsforge project:
  <a href="https://github.com/mapsforge/mapsforge/blob/master/docs/Getting-Started-Android-App.md" rel="nofollow">A very basic Android app example - GitHub</a> with Android Studio.<br>
  During the application run I'm encoutering a problem - map isn't rendered: <a href="http://i.stack.imgur.com/bVNUZ.jpg" rel="nofollow">http://i.stack.imgur.com/bVNUZ.jpg</a><br>
  There is message from my logcat:  </p>
  
  <pre><code>01-08 15:46:45.273 32331-32359/com.maptests.mapsforgetest E/DatabaseRenderer: Error to retrieve render theme from future
  java.util.concurrent.ExecutionException: java.lang.NoClassDefFoundError: com.caverock.androidsvg.SVG
  at java.util.concurrent.FutureTask.report(FutureTask.java:93)
  at java.util.concurrent.FutureTask.get(FutureTask.java:163)
  at org.mapsforge.map.layer.renderer.DatabaseRenderer.executeJob(DatabaseRenderer.java:124)
  at org.mapsforge.map.layer.renderer.MapWorkerPool$MapWorker.run(MapWorkerPool.java:121)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
  at java.lang.Thread.run(Thread.java:841)
  Caused by: java.lang.NoClassDefFoundError: com.caverock.androidsvg.SVG
  at org.mapsforge.map.android.graphics.AndroidSvgBitmap.getResourceBitmap(AndroidSvgBitmap.java:49)
  at org.mapsforge.map.android.graphics.AndroidSvgBitmap.&lt;init&gt;(AndroidSvgBitmap.java:107)
  at org.mapsforge.map.android.graphics.AndroidGraphicFactory.renderSvg(AndroidGraphicFactory.java:302)
  at org.mapsforge.map.rendertheme.XmlUtils.createBitmap(XmlUtils.java:64)
  at org.mapsforge.map.rendertheme.renderinstruction.RenderInstruction.createBitmap(RenderInstruction.java:131)
  at org.mapsforge.map.rendertheme.renderinstruction.Symbol.getBitmap(Symbol.java:62)
  at org.mapsforge.map.rendertheme.renderinstruction.Caption.&lt;init&gt;(Caption.java:96)
  at org.mapsforge.map.rendertheme.rule.RenderThemeHandler.startElement(RenderThemeHandler.java:186)
  at org.mapsforge.map.rendertheme.rule.RenderThemeHandler.processRenderTheme(RenderThemeHandler.java:107)
  at org.mapsforge.map.rendertheme.rule.RenderThemeHandler.getRenderTheme(RenderThemeHandler.java:67)
  at org.mapsforge.map.rendertheme.rule.RenderThemeFuture$RenderThemeCallable.call(RenderThemeFuture.java:60)
  at org.mapsforge.map.rendertheme.rule.RenderThemeFuture$RenderThemeCallable.call(RenderThemeFuture.java:43)
  at java.util.concurrent.FutureTask.run(FutureTask.java:237)
  at java.lang.Thread.run(Thread.java:841) 
  </code></pre>
  
  <p>Main activity code (nearly not changed, only essential changes comparing to oryginal code):    </p>
  
  <pre><code>package com.maptests.mapsforgetest;
  import java.io.File;
  import org.mapsforge.core.model.LatLong;
  import org.mapsforge.map.android.graphics.AndroidGraphicFactory;
  import org.mapsforge.map.android.util.AndroidUtil;
  import org.mapsforge.map.android.view.MapView;
  import org.mapsforge.map.layer.cache.TileCache;
  import org.mapsforge.map.layer.renderer.TileRendererLayer;
  import org.mapsforge.map.datastore.MapDataStore;
  import org.mapsforge.map.reader.MapFile;
  import org.mapsforge.map.rendertheme.InternalRenderTheme;
  import android.support.v7.app.AppCompatActivity;
  import android.os.Bundle;
  import android.os.Environment;
  
  public class MainActivity extends AppCompatActivity {
      // name of the map file in the external storage
      private static final String MAPFILE = "germany.map";
      private MapView mapView;
      private TileCache tileCache;
      private TileRendererLayer tileRendererLayer;
  
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          AndroidGraphicFactory.createInstance(this.getApplication());
          this.mapView = new MapView(this);
          setContentView(this.mapView);
          this.mapView.setClickable(true);
          this.mapView.getMapScaleBar().setVisible(true);
          this.mapView.setBuiltInZoomControls(true);
          this.mapView.getMapZoomControls().setZoomLevelMin((byte) 10);
          this.mapView.getMapZoomControls().setZoomLevelMax((byte) 20);
          // create a tile cache of suitable size
          this.tileCache = AndroidUtil.createTileCache(this, "mapcache",
                  mapView.getModel().displayModel.getTileSize(), 1f,
                  this.mapView.getModel().frameBufferModel.getOverdrawFactor());
      }
      @Override
      protected void onStart() {
          super.onStart();
          this.mapView.getModel().mapViewPosition.setCenter(new LatLong(52.229081, 21.068434));
          this.mapView.getModel().mapViewPosition.setZoomLevel((byte) 12);
          // tile renderer layer using internal render theme
          MapDataStore mapDataStore = new MapFile(getMapFile());
          this.tileRendererLayer = new TileRendererLayer(tileCache, mapDataStore,
                  this.mapView.getModel().mapViewPosition, false, true, AndroidGraphicFactory.INSTANCE);
          tileRendererLayer.setXmlRenderTheme(InternalRenderTheme.OSMARENDER);
          // only once a layer is associated with a mapView the rendering starts
          this.mapView.getLayerManager().getLayers().add(tileRendererLayer);
      }
  
      @Override
      protected void onDestroy() {
          super.onDestroy();
          this.mapView.destroyAll();
      }
  
      private File getMapFile() {
          File file = new File(Environment.getExternalStorageDirectory(), MAPFILE);
          return file;
      }
  }
  </code></pre>
  
  <p>And my XML design file:  </p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:tools="http://schemas.android.com/tools"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:paddingBottom="@dimen/activity_vertical_margin"
      android:paddingLeft="@dimen/activity_horizontal_margin"
      android:paddingRight="@dimen/activity_horizontal_margin"
      android:paddingTop="@dimen/activity_vertical_margin"
      tools:context="com.maptests.mapsforgetest.MainActivity"&gt;
  
      &lt;org.mapsforge.map.android.view.MapView
          android:id="@+id/mapView"
          android:layout_width="fill_parent"
          android:layout_height="fill_parent" /&gt;
  
  &lt;/RelativeLayout&gt;
  </code></pre>
  
  <p>I think i've added also all required .jar-s:<br>
  mapsforge-core-0.6.0.jar,<br>
  mapsforge-map-0.6.0.jar,<br>
  mapsforge-map-android,<br>
  mapsforge-map-awt-0.6.0.jar,<br>
  mapsforge-map-reader-0.6.0.jar.  </p>
  
  <p>Are there any other libraries I should add?  </p>
  
  <p>According to the mesage from logcat and what I read, there is a problem with default map theme, how can I solve the problem? </p>