Draggable marker sample (#869)

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

@@ -0,0 +1,105 @@
+/*
+ * Copyright 2014 Hannes Janetzek
+ * Copyright 2016-2020 devemux86
+ * Copyright 2021 Frank Knoll
+ *
+ * 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.graphics.BitmapFactory;
+import android.os.Bundle;
+import android.util.Log;
+import org.oscim.android.canvas.AndroidBitmap;
+import org.oscim.android.drag.DragAndDropListener;
+import org.oscim.android.drag.DraggableItemizedLayer;
+import org.oscim.android.drag.DraggableMarkerItem;
+import org.oscim.core.GeoPoint;
+import org.oscim.layers.marker.ItemizedLayer;
+import org.oscim.layers.marker.MarkerInterface;
+import org.oscim.layers.marker.MarkerSymbol;
+import org.oscim.layers.marker.MarkerSymbol.HotspotPlace;
+import org.oscim.layers.tile.bitmap.BitmapTileLayer;
+import org.oscim.tiling.source.OkHttpEngine;
+import org.oscim.tiling.source.UrlTileSource;
+import org.oscim.tiling.source.bitmap.DefaultSources;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+public class DraggableMarkerOverlayActivity extends MapActivity {
+
+    public DraggableMarkerOverlayActivity() {
+        super(R.layout.activity_map_draggable);
+    }
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        createLayers();
+    }
+
+    void createLayers() {
+        UrlTileSource tileSource = DefaultSources.OPENSTREETMAP
+                .httpFactory(new OkHttpEngine.OkHttpFactory())
+                .build();
+        tileSource.setHttpRequestHeaders(Collections.singletonMap("User-Agent", "vtm-android-example"));
+        mMap.layers().add(new BitmapTileLayer(mMap, tileSource));
+
+        ItemizedLayer mMarkerLayer = new DraggableItemizedLayer(
+                mMap,
+                new ArrayList<MarkerInterface>(),
+                new MarkerSymbol(
+                        new AndroidBitmap(BitmapFactory.decodeResource(getResources(), R.drawable.marker_poi)),
+                        HotspotPlace.BOTTOM_CENTER),
+                null);
+        mMap.layers().add(mMarkerLayer);
+
+        DragAndDropListener dragAndDropListener = new DragAndDropListener() {
+            @Override
+            public void startDragItemAtGeoPoint(DraggableMarkerItem item, GeoPoint geoPoint) {
+                Log.i(DraggableMarkerOverlayActivity.this.getClass().getSimpleName(), "startDragItemAtGeoPoint: " + geoPoint);
+            }
+
+            @Override
+            public void ongoingDragItemToGeoPoint(DraggableMarkerItem item, GeoPoint geoPoint) {
+                Log.i(DraggableMarkerOverlayActivity.this.getClass().getSimpleName(), "ongoingDragItemToGeoPoint: " + geoPoint);
+            }
+
+            @Override
+            public void dropItemAtGeoPoint(DraggableMarkerItem item, GeoPoint geoPoint) {
+                Log.i(DraggableMarkerOverlayActivity.this.getClass().getSimpleName(), "dropItemAtGeoPoint: " + geoPoint);
+            }
+        };
+
+        List<MarkerInterface> pts = new ArrayList<>();
+        for (double lat = -90; lat <= 90; lat += 45) {
+            for (double lon = -180; lon <= 180; lon += 45) {
+                pts.add(new DraggableMarkerItem(lat + "/" + lon, "", new GeoPoint(lat, lon), dragAndDropListener));
+            }
+        }
+
+        mMarkerLayer.addItems(pts);
+    }
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+
+        /* ignore saved position */
+        mMap.setMapPosition(0, 0, 1 << 2);
+    }
+}

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

@@ -124,6 +124,7 @@ public class Samples extends Activity {
         linearLayout.addView(createButton(JeoIndoorActivity.class));
         linearLayout.addView(createButton(GdxPoi3DActivity.class));
         linearLayout.addView(createButton(OverpassActivity.class));
+        linearLayout.addView(createButton(DraggableMarkerOverlayActivity.class));
         linearLayout.addView(createButton(ClusterMarkerOverlayActivity.class));
         linearLayout.addView(createButton(FragmentActivity.class));
     }