CODEWITHSUNDEEP
androidmaps
Jon Zangitu
Jon Zangitu

Reputation: 967

Draw OverlayWays with Mapsforge

I'm trying to draw a simple way, a route, in my Android app with Mapsforge. I have followed an example and I created single points, OverlayItems. But when I try to draw a route I don't see anything in my map. Can anybody help me? Here is my simple code:

    Paint wayPaint = new Paint();
    wayPaint.setColor(color.Chocolate);
    ArrayWayOverlay wayOverlay = new ArrayWayOverlay(wayPaint,wayPaint);
    GeoPoint gp1 = new GeoPoint(41.38, 2.15);
    GeoPoint gp2 = new GeoPoint(41.39, 2.15);
    GeoPoint gp3 = new GeoPoint(41.40, 2.15);
    GeoPoint gp4 = new GeoPoint(41.41, 2.15);
    OverlayWay way = new OverlayWay(new GeoPoint[][] { { gp1, gp2, gp3, gp4 } });
    wayOverlay.addWay(way);
    mapView.getOverlays().add(wayOverlay);

I don't know if I have to put markers somewhere...

Upvotes: 1

Views: 5596

Answers (2)

Rakeeb Rajbhandari
Rakeeb Rajbhandari

Reputation: 5063

The OverlayWay api has been deprecated as of v-0.4.0. Since I had a hard time finding new ways to draw overlays on the map I thought I post this here.Mapsforge now has added the following types of overlays:

 1. Circle
 2. FixedPixelCircle
 3. Marker
 4. Polygon
 5. Polyline

All of the new classes extends the Layer class, making it easy to implement. You instantiate the required object and add it to the MapView like this.

// instantiating the paint object 
Paint paint = AndroidGraphicFactory.INSTANCE.createPaint();
paint.setColor(color);
paint.setStrokeWidth(strokeWidth);
paint.setStyle(style);

// instantiating the polyline object
Polyline polyline = new Polyline(paint, AndroidGraphicFactory.INSTANCE);

// set lat lng for the polyline
List<LatLong> coordinateList = polyline.getLatLongs();
coordinateList.add(latlng1);
coordinateList.add(latlng2);
coordinateList.add(latlng3);
coordinateList.add(latlng4);
coordinateList.add(latlng5);

// adding the layer to the mapview
mapView.getLayerManager().getLayers().add(polyline);

There is also a mapsforge example link available.

Upvotes: 10

TiagoPereira17
TiagoPereira17

Reputation: 174

try set the wayPaint Style and the stroke width, like this:

Paint wayPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
wayPaint.setStyle(Paint.Style.STROKE);
wayPaint.setColor(Color.BLUE);
wayPaint.setAlpha(192);
wayPaint.setStrokeWidth(6);
wayDefaultPaintFill.setStrokeJoin(Paint.Join.MITER);

ArrayWayOverlay wayOverlay = new ArrayWayOverlay(wayPaint,wayPaint);
//your points
OverlayWay way = new OverlayWay(new GeoPoint[][] { {geoPoint1,geoPoint2,... } });
wayOverlay.addWay(way);
mapView.Overlays().add(wayOverlay);

hope this helps!

Upvotes: 4

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