add MarkerLayer example

vtm-android-example/AndroidManifest.xml

@@ -38,6 +38,11 @@
       android:label="@string/title_activity_map" >
     </activity>
   
+       
+     <activity
+      android:name="org.oscim.android.test.MarkerOverlayActivity"
+      android:label="@string/title_activity_map" >
+    </activity>
   </application>
 
 </manifest>

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

@@ -0,0 +1,82 @@
+/*
+ * Copyright 2014 Hannes Janetzek
+ *
+ * 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 java.util.ArrayList;
+import java.util.List;
+
+import org.oscim.android.MapActivity;
+import org.oscim.android.MapView;
+import org.oscim.android.canvas.AndroidGraphics;
+import org.oscim.core.GeoPoint;
+import org.oscim.layers.GenericLayer;
+import org.oscim.layers.marker.ItemizedIconLayer;
+import org.oscim.layers.marker.ItemizedIconLayer.OnItemGestureListener;
+import org.oscim.layers.marker.MarkerItem;
+import org.oscim.layers.marker.MarkerItem.HotspotPlace;
+import org.oscim.layers.marker.MarkerSymbol;
+import org.oscim.renderer.GridRenderer;
+
+import android.os.Bundle;
+import android.widget.Toast;
+
+public class MarkerOverlayActivity extends MapActivity implements OnItemGestureListener<MarkerItem> {
+	MapView mMapView;
+
+	@Override
+	public void onCreate(Bundle savedInstanceState) {
+		super.onCreate(savedInstanceState);
+		setContentView(R.layout.activity_map);
+
+		mMapView = (MapView) findViewById(R.id.mapView);
+
+		MarkerSymbol symbol = AndroidGraphics.makeMarker(getResources(),
+		                                                 R.drawable.marker_poi,
+		                                                 HotspotPlace.CENTER);
+
+		ItemizedIconLayer<MarkerItem> markerLayer =
+		        new ItemizedIconLayer<MarkerItem>(mMap, new ArrayList<MarkerItem>(),
+		                                          symbol, this);
+
+		mMap.getLayers().add(markerLayer);
+
+		List<MarkerItem> pts = new ArrayList<MarkerItem>();
+
+		for (double lat = -90; lat <= 90; lat += 5) {
+			for (double lon = -180; lon <= 180; lon += 5)
+				pts.add(new MarkerItem(lat + "/" + lon, "",
+				                       new GeoPoint(lat, lon)));
+		}
+
+		markerLayer.addItems(pts);
+
+		mMap.getLayers().add(new GenericLayer(mMap, new GridRenderer()));
+		mMap.setMapPosition(0, 0, 1);
+	}
+
+	@Override
+	public boolean onItemSingleTapUp(int index, MarkerItem item) {
+		Toast toast = Toast.makeText(this, item.getTitle(), Toast.LENGTH_SHORT);
+		toast.show();
+		return true;
+	}
+
+	@Override
+	public boolean onItemLongPress(int index, MarkerItem item) {
+		return false;
+	}
+}

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

@@ -37,6 +37,7 @@ public class Samples extends Activity {
 		LinearLayout linearLayout = (LinearLayout) findViewById(R.id.samples);
 		linearLayout.addView(createButton(SimpleMapActivity.class));
 		linearLayout.addView(createButton(PathOverlayActivity.class));
+		linearLayout.addView(createButton(MarkerOverlayActivity.class));
 	}
 
 	private Button createButton(final Class<?> clazz) {