How to handle WKT data in Android?

Question

I have data in this format:

POINT(73.0166738279393 33.6788721326803)
MULTILINESTRING((73.0131224998036 33.679001500419,73.0119635003153 33.678392400389,73.01         


        

Answer 1

Here is a function I wrote to convert a simple (no holes etc.) polygon given in WKT into an array of LatLang:

public static LatLng[] GetPolygonPoints(String poligonWkt){
    ArrayList points = new ArrayList();
    Pattern p = Pattern.compile("(\\d*\\.\\d+)\\s(\\d*\\.\\d+)");
    Matcher m = p.matcher(poligonWkt);
    String point;

    while (m.find()){
        point =  poligonWkt.substring(m.start(), m.end());
        points.add(new LatLng(Double.parseDouble(m.group(2)), Double.parseDouble(m.group(1))));
    }
    return points.toArray(new LatLng[points.size()]);
}

You can then use the array to add the polygon on the map:

LatLng[] points = GeographyHelper.GetPolygonPoints(shapeWkt);

Polygon p = mMap.addPolygon(
   new PolygonOptions()
      .add(points)
      .strokeWidth(4)
      .strokeColor(Color.RED));