public override void ViewDidLoad() { base.ViewDidLoad(); // Clear the default layer, add a dark one instead MapView.Layers.Clear(); MapView.Layers.Add(new CartoOnlineVectorTileLayer(CartoBaseMapStyle.CartoBasemapStyleDark)); Projection projection = MapView.Options.BaseProjection; // Create a datasource and layer for the map LocalVectorDataSource source = new LocalVectorDataSource(projection); VectorLayer layer = new VectorLayer(source); MapView.Layers.Add(layer); // Initialize CartoSQL service, set a username CartoSQLService service = new CartoSQLService(); service.Username = "******"; PointStyleBuilder builder = new PointStyleBuilder { Color = new Carto.Graphics.Color(255, 0, 0, 255), Size = 1 }; MapView.QueryFeatures(service, source, builder.BuildStyle(), query); }
protected override void OnCreate(Android.OS.Bundle savedInstanceState) { base.OnCreate(savedInstanceState); // Clear the default layer, add a dark one instead MapView.Layers.Clear(); var baseLayer = new CartoOnlineVectorTileLayer(CartoBaseMapStyle.CartoBasemapStyleDarkmatter); // Remove texts so dots would be more prominent (baseLayer.TileDecoder as MBVectorTileDecoder).SetStyleParameter("lang", "nolang"); MapView.Layers.Add(baseLayer); Projection projection = MapView.Options.BaseProjection; // Create a datasource and layer for the map LocalVectorDataSource source = new LocalVectorDataSource(projection); VectorLayer layer = new VectorLayer(source); MapView.Layers.Add(layer); // Initialize CartoSQL service, set a username CartoSQLService service = new CartoSQLService(); service.Username = "******"; PointStyleBuilder builder = new PointStyleBuilder { Color = new Carto.Graphics.Color(255, 0, 0, 255), Size = 1 }; MapView.QueryFeatures(service, source, builder.BuildStyle(), query); }
public static void QueryFeatures(this MapView map, CartoSQLService service, LocalVectorDataSource source, PointStyle style, string query) { System.Threading.Tasks.Task.Run(delegate { FeatureCollection features = service.QueryFeatures(query, map.Options.BaseProjection); for (int i = 0; i < features.FeatureCount; i++) { Feature feature = features.GetFeature(i); PointGeometry geometry = (PointGeometry)feature.Geometry; var point = new Point(geometry, style); source.Add(point); } }); }