vtm-android-gdx module, fix #435

vtm-android-example/AndroidManifest.xml

@@ -37,6 +37,9 @@
         <activity
             android:name=".ClusterMarkerOverlayActivity"
             android:configChanges="keyboardHidden|orientation|screenSize" />
+        <activity
+            android:name=".GdxMapActivity"
+            android:configChanges="keyboardHidden|orientation|screenSize" />
         <activity
             android:name=".JeoIndoorMapActivity"
             android:configChanges="keyboardHidden|orientation|screenSize" />

vtm-android-example/build.gradle

@@ -25,6 +25,10 @@ dependencies {
     }
     implementation 'com.android.support:support-v4:27.0.0'
 
+    implementation project(':vtm-android-gdx')
+    implementation project(':vtm-gdx')
+    implementation "com.badlogicgames.gdx:gdx-backend-android:$gdxVersion"
+
     implementation 'org.mapsforge:mapsforge-core:master-SNAPSHOT'
     implementation 'org.mapsforge:mapsforge-poi:master-SNAPSHOT'
     implementation 'org.mapsforge:mapsforge-poi-android:master-SNAPSHOT'
@@ -60,6 +64,9 @@ android {
             file("${rootDir}/vtm-android/natives").eachDir() { dir ->
                 jniLibs.srcDirs += "${dir.path}/lib"
             }
+            file("${rootDir}/vtm-android-gdx/natives").eachDir() { dir ->
+                jniLibs.srcDirs += "${dir.path}/lib"
+            }
         }
         debug.setRoot('build-types/debug')
         release.setRoot('build-types/release')

vtm-android-example/src/org/oscim/android/test/GdxMapActivity.java

@@ -0,0 +1,67 @@
+/*
+ * Copyright 2013 Hannes Janetzek
+ * Copyright 2016-2017 devemux86
+ *
+ * This file is part of the OpenScienceMap project (http://www.opensciencemap.org).
+ *
+ * This program is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU Lesser General Public License as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+ * PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.oscim.android.test;
+
+import android.os.Bundle;
+import android.util.DisplayMetrics;
+
+import com.badlogic.gdx.backends.android.AndroidApplication;
+import com.badlogic.gdx.backends.android.AndroidApplicationConfiguration;
+import com.badlogic.gdx.utils.SharedLibraryLoader;
+
+import org.oscim.android.canvas.AndroidGraphics;
+import org.oscim.backend.CanvasAdapter;
+import org.oscim.backend.GLAdapter;
+import org.oscim.core.Tile;
+import org.oscim.gdx.AndroidGL;
+import org.oscim.gdx.GdxAssets;
+import org.oscim.gdx.GdxMap;
+import org.oscim.tiling.TileSource;
+import org.oscim.tiling.source.oscimap4.OSciMap4TileSource;
+
+public class GdxMapActivity extends AndroidApplication {
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        AndroidGraphics.init();
+        GdxAssets.init("");
+        GLAdapter.init(new AndroidGL());
+
+        DisplayMetrics metrics = getResources().getDisplayMetrics();
+        CanvasAdapter.dpi = (int) (metrics.scaledDensity * CanvasAdapter.DEFAULT_DPI);
+        Tile.SIZE = Tile.calculateTileSize();
+
+        AndroidApplicationConfiguration cfg = new AndroidApplicationConfiguration();
+        cfg.stencil = 8;
+        cfg.numSamples = 2;
+
+        new SharedLibraryLoader().load("vtm-jni");
+
+        initialize(new GdxMapAndroid(), cfg);
+    }
+
+    class GdxMapAndroid extends GdxMap {
+        @Override
+        public void createLayers() {
+            TileSource ts = new OSciMap4TileSource();
+            initDefaultLayers(ts, true, true, true, getResources().getDisplayMetrics().density);
+        }
+    }
+}

vtm-android-example/src/org/oscim/android/test/Samples.java

@@ -84,6 +84,7 @@ public class Samples extends Activity {
         linearLayout.addView(createButton(MapzenMvtMapActivity.class));
         linearLayout.addView(createButton(MapzenGeojsonMapActivity.class));
         linearLayout.addView(createButton(OpenMapTilesGeojsonMapActivity.class));
+        linearLayout.addView(createButton(GdxMapActivity.class));
 
         linearLayout.addView(createLabel("Features"));
         linearLayout.addView(createButton(null, "GraphHopper Routing", new View.OnClickListener() {