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

Just to expand on Paul's answer, since his answer helped me so much...

private void setUpMap(SomeObjectWithLocationAsWKT r) {

    List points = new ArrayList();
    WKTReader wktReader = new WKTReader();
    LineString line = null;
    Coordinate lineCentroid = null;
    Coordinate[] lineCoordinates = null;

    // if our object's WKT geometry is not null - map it
    if (r.geowkt != null) {

        // use the JTS (Java Topology Suite) WKTReader to read that WKT!
        try {
            line = (LineString) wktReader.read(r.geowkt);
        } catch (ParseException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        // using (JTS) again to getCoordinates of the linestring
        lineCoordinates = line.getCoordinates();

        // Iterate through the line's coordinates & assign to List points
        for(Coordinate coordinate : lineCoordinates){
            points.add(new LatLng(coordinate.x, coordinate.y));
        }

        // add Polyline to Google Map
        Polyline p = mMap.addPolyline(
        new PolylineOptions()
        .addAll(points)
        .width(4)
        .color(Color.RED));
    }
}

// an example of zooming to the centroid of the WKT geometry 
// again, using (JTS - Java Topology Suite)
private void handleNewLocation(Location location) {
    LatLng latLng = null; 
    WKTReader wktReader = new WKTReader();
    LineString line = null;
    Coordinate lineCentroid = null; 

    // if our object's WKT geometry is not null - zoom to it
    if (r.geowkt != null) {
        try {
            line = (LineString) wktReader.read(r.geowkt);
            lineCentroid = line.getCentroid().getCoordinate();
            latLng = new LatLng(lineCentroid.x, lineCentroid.y);
        } catch (ParseException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    } else {
        // just default to whatever location was passed in
        Log.d(TAG, location.toString());
        double currentLatitude = location.getLatitude();
        double currentLongitude = location.getLongitude();
        latLng = new LatLng(currentLatitude, currentLongitude);
    }
    CameraUpdate yourLocation = CameraUpdateFactory.newLatLngZoom(latLng, 19);
    mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
    mMap.animateCamera(yourLocation);
}