Multi Map Sample

As proposed in #194

vtm-android-example/AndroidManifest.xml

@@ -29,6 +29,9 @@
         <activity
             android:name=".BitmapTileMapActivity"
             android:configChanges="keyboardHidden|orientation|screenSize" />
+        <activity
+            android:name=".MultiMapActivity"
+            android:configChanges="keyboardHidden|orientation|screenSize" />
         <activity
             android:name=".JeoIndoorMapActivity"
             android:configChanges="keyboardHidden|orientation|screenSize" />

vtm-android-example/res/layout/activity_map_multi.xml

@@ -0,0 +1,18 @@
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <org.oscim.android.MapView
+        android:id="@+id/mapView1"
+        android:layout_width="match_parent"
+	android:layout_weight="1"
+        android:layout_height="0dip" />
+
+    <org.oscim.android.MapView
+        android:id="@+id/mapView2"
+        android:layout_width="match_parent"
+	android:layout_weight="1"
+        android:layout_height="0dip" />
+
+</LinearLayout>

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

@@ -0,0 +1,95 @@
+/*
+ * Copyright 2016 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.app.Activity;
+import android.os.Bundle;
+
+import org.oscim.android.MapPreferences;
+import org.oscim.android.MapView;
+import org.oscim.core.Tile;
+import org.oscim.map.Map;
+import org.oscim.layers.tile.vector.VectorTileLayer;
+import org.oscim.tiling.TileSource;
+import org.oscim.tiling.source.oscimap4.OSciMap4TileSource;
+import org.oscim.theme.VtmThemes;
+import org.oscim.layers.GroupLayer;
+import org.oscim.layers.tile.buildings.BuildingLayer;
+import org.oscim.layers.tile.vector.labeling.LabelLayer;
+
+
+public class MultiMapActivity extends Activity {
+    MapView mMapView1;
+    MapView mMapView2;
+    Map mMap1;
+    Map mMap2;
+    MapPreferences mPrefs;
+
+    VectorTileLayer mBaseLayer1;
+    VectorTileLayer mBaseLayer2;
+    TileSource mTileSource;
+
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        Tile.SIZE = Tile.calculateTileSize(getResources().getDisplayMetrics().scaledDensity);
+	setContentView(R.layout.activity_map_multi);
+
+        setTitle(getClass().getSimpleName());
+
+        mTileSource = new OSciMap4TileSource();
+
+        mMapView1 = (MapView) findViewById(R.id.mapView1);
+        mMap1 = mMapView1.map();
+        mBaseLayer1 = mMap1.setBaseMap(mTileSource);
+
+        GroupLayer groupLayer1 = new GroupLayer(mMap1);
+        groupLayer1.layers.add(new BuildingLayer(mMap1, mBaseLayer1));
+        groupLayer1.layers.add(new LabelLayer(mMap1, mBaseLayer1));
+        mMap1.layers().add(groupLayer1);
+	mMap1.setTheme(VtmThemes.DEFAULT);
+
+        mMapView2 = (MapView) findViewById(R.id.mapView2);
+        mMap2 = mMapView2.map();
+        mBaseLayer2 = mMap2.setBaseMap(mTileSource);
+
+        GroupLayer groupLayer2 = new GroupLayer(mMap2);
+        groupLayer2.layers.add(new BuildingLayer(mMap2, mBaseLayer2));
+        groupLayer2.layers.add(new LabelLayer(mMap2, mBaseLayer2));
+        mMap2.layers().add(groupLayer2);
+	mMap2.setTheme(VtmThemes.DEFAULT);
+
+        mPrefs = new MapPreferences(MapActivity.class.getName(), this);
+    }
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+
+        mPrefs.load(mMapView1.map());
+        mMapView1.onResume();
+        mMapView2.onResume();
+    }
+
+    @Override
+    protected void onPause() {
+        super.onPause();
+
+        mMapView1.onPause();
+        mMapView2.onPause();
+        mPrefs.save(mMapView1.map());
+    }
+}

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

@@ -53,6 +53,7 @@ public class Samples extends Activity {
         linearLayout.addView(createButton(JeoIndoorMapActivity.class));
         linearLayout.addView(createButton(OsmJsonMapActivity.class));
         linearLayout.addView(createButton(VectorLayerMapActivity.class));
+        linearLayout.addView(createButton(MultiMapActivity.class));
     }
 
     private Button createButton(final Class<?> clazz) {