string<T extends Object> static method

Widget string<T extends Object>(
  1. String data, {
  2. PolylineProperties<T>? polylineProperties,
  3. Polyline<T> builder(
    1. List<LatLng> points,
    2. Map<String, Object?>? map
    )?,
  4. MapController? mapController,
  5. Key? key,
})

Displays polylines from GeoJSON data provided as a string on a map.

The PowerGeoJSONPolylines.string method takes GeoJSON data as a string provided in the data parameter and displays the polylines on a map. You can customize the rendering of the polylines using polylineProperties and builder.

Example usage:

PowerGeoJSONPolylines.string(
  '{ "type": "FeatureCollection", ... }',
  polylineProperties: PolylineProperties(
    color: Colors.blue,
    width: 3.0,
  ),
  mapController: myMapController,
);

The polylineCulling parameter allows you to enable or disable culling of polylines that are outside the map's viewport, improving performance.

Returns a widget displaying the loaded polylines on the map.

Implementation

static Widget string<T extends Object>(
  String data, {
  PolylineProperties<T>? polylineProperties,
  Polyline<T> Function(List<LatLng> points, Map<String, Object?>? map)?
  builder,
  MapController? mapController,
  Key? key,
}) {
  return _string(
    data,
    polylineProperties: polylineProperties ?? PolylineProperties<T>(),
    builder: builder,
    key: key,
    mapController: mapController,
  );
}