GettingStarted.java

/*
 * Copyright 2018 devemux86
 *
 * 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 android.os.Environment;

import org.oscim.android.MapView;
import org.oscim.backend.CanvasAdapter;
import org.oscim.layers.tile.buildings.BuildingLayer;
import org.oscim.layers.tile.vector.VectorTileLayer;
import org.oscim.layers.tile.vector.labeling.LabelLayer;
import org.oscim.renderer.GLViewport;
import org.oscim.scalebar.DefaultMapScaleBar;
import org.oscim.scalebar.MapScaleBar;
import org.oscim.scalebar.MapScaleBarLayer;
import org.oscim.theme.VtmThemes;
import org.oscim.tiling.source.mapfile.MapFileTileSource;

import java.io.File;

/**
 * A very basic Android app example.
 * <p>
 * You'll need a map with filename germany.map from download.mapsforge.org in device storage.
 * Can be berlin.map renamed as germany.map because of smaller size.
 */
public class GettingStarted extends Activity {

    // Name of the map file in device storage
    private static final String MAP_FILE = "germany.map";

    private MapView mapView;
    private MapScaleBar mapScaleBar;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        // Map view
        mapView = new MapView(this);
        setContentView(mapView);

        // Tile source
        MapFileTileSource tileSource = new MapFileTileSource();
        String mapPath = new File(Environment.getExternalStorageDirectory(), MAP_FILE).getAbsolutePath();
        if (tileSource.setMapFile(mapPath)) {
            // Vector layer
            VectorTileLayer tileLayer = mapView.map().setBaseMap(tileSource);

            // Building layer
            mapView.map().layers().add(new BuildingLayer(mapView.map(), tileLayer));

            // Label layer
            mapView.map().layers().add(new LabelLayer(mapView.map(), tileLayer));

            // Render theme
            mapView.map().setTheme(VtmThemes.DEFAULT);

            // Scale bar
            mapScaleBar = new DefaultMapScaleBar(mapView.map());
            MapScaleBarLayer mapScaleBarLayer = new MapScaleBarLayer(mapView.map(), mapScaleBar);
            mapScaleBarLayer.getRenderer().setPosition(GLViewport.Position.BOTTOM_LEFT);
            mapScaleBarLayer.getRenderer().setOffset(5 * CanvasAdapter.getScale(), 0);
            mapView.map().layers().add(mapScaleBarLayer);

            // Note: this map position is specific to Berlin area
            mapView.map().setMapPosition(52.517037, 13.38886, 1 << 12);
        }
    }

    @Override
    protected void onResume() {
        super.onResume();
        mapView.onResume();
    }

    @Override
    protected void onPause() {
        mapView.onPause();
        super.onPause();
    }

    @Override
    protected void onDestroy() {
        if (mapScaleBar != null)
            mapScaleBar.destroy();
        mapView.onDestroy();
        super.onDestroy();
    }
}