GeoJsonParser class

GeoJsonParser parses the GeoJson and fills three lists of parsed objects which are defined in flutter_map package

  • list of Markers
  • list of CircleMarkers
  • list of Polylines
  • list of Polygons

One should pass these lists when creating adequate layers in flutter_map. For details see example.

Currently GeoJson parser supports only FeatureCollection and not GeometryCollection. See the GeoJson Format specification at: https://www.rfc-editor.org/rfc/rfc7946

For creation of Marker, Polyline, CircleMarker and Polygon objects the default callback functions are provided which are used in case when no user-defined callback function is provided. To fully customize the Marker, Polyline, CircleMarker and Polygon creation one has to write his own callback functions. As a template the default callback functions can be used.

Constructors

GeoJsonParser({MarkerCreationCallback? markerCreationCallback, PolylineCreationCallback? polyLineCreationCallback, PolygonCreationCallback? polygonCreationCallback, CircleMarkerCreationCallback? circleMarkerCreationCallback, FilterFunction? filterFunction, Color? defaultMarkerColor, IconData? defaultMarkerIcon, void onMarkerTapCallback(Map<String, dynamic>)?, Color? defaultPolylineColor, double? defaultPolylineStroke, Color? defaultPolygonBorderColor, Color? defaultPolygonFillColor, double? defaultPolygonBorderStroke, bool? defaultPolygonIsFilled, Color? defaultCircleMarkerColor, Color? defaultCircleMarkerBorderColor, bool? defaultCircleMarkerIsFilled, void onCircleMarkerTapCallback(Map<String, dynamic>)?})
default constructor - all parameters are optional and can be set later with setters

Properties

circleMarkerCreationCallback ↔ CircleMarkerCreationCallback?
user defined callback function that creates a Polygon object
getter/setter pair
circles → List<CircleMarker>
list of CircleMarker objects created as result of parsing
final
defaultCircleMarkerBorderColor ↔ Color?
default CircleMarker border stroke
getter/setter pair
defaultCircleMarkerColor ↔ Color?
default CircleMarker border color
getter/setter pair
defaultCircleMarkerIsFilled ↔ bool?
default flag if CircleMarker is filled (default is true)
getter/setter pair
defaultMarkerColor ↔ Color?
default Marker color
getter/setter pair
defaultMarkerIcon ↔ IconData?
default Marker icon
getter/setter pair
defaultPolygonBorderColor ↔ Color?
default Polygon border color
getter/setter pair
defaultPolygonBorderStroke ↔ double?
default Polygon border stroke
getter/setter pair
defaultPolygonFillColor ↔ Color?
default Polygon fill color
getter/setter pair
defaultPolygonIsFilled ↔ bool?
default flag if Polygon is filled (default is true)
getter/setter pair
defaultPolylineColor ↔ Color?
default Polyline color
getter/setter pair
defaultPolylineStroke ↔ double?
default Polyline stroke
getter/setter pair
filterFunction ↔ FilterFunction?
user defined callback function called during parse for filtering
getter/setter pair
hashCode → int
The hash code for this object.
no setterinherited
markerCreationCallback ↔ MarkerCreationCallback?
user defined callback function that creates a Marker object
getter/setter pair
markers → List<Marker>
list of Marker objects created as result of parsing
final
onCircleMarkerTapCallback ↔ (void Function(Map<String, dynamic>)?)
user defined callback function called when the CircleMarker is tapped
getter/setter pair
onMarkerTapCallback ↔ (void Function(Map<String, dynamic>)?)
user defined callback function called when the Marker is tapped
getter/setter pair
polygonCreationCallback ↔ PolygonCreationCallback?
user defined callback function that creates a Polygon object
getter/setter pair
polygons → List<Polygon>
list of Polygon objects created as result of parsing
final
polyLineCreationCallback ↔ PolylineCreationCallback?
user defined callback function that creates a Polyline object
getter/setter pair
polylines → List<Polyline>
list of Polyline objects created as result of parsing
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
setDefaultCircleMarkerColor ← Color
set default CircleMarker color
no getter
setDefaultMarkerColor ← Color
set default Marker color
no getter
setDefaultMarkerIcon ← IconData
set default Marker icon
no getter
setDefaultPolygonBorderColorStroke ← Color
set default Polygon border color
no getter
setDefaultPolygonBorderStroke ← double
set default Polygon border stroke
no getter
setDefaultPolygonFillColor ← Color
set default Polygon fill color
no getter
setDefaultPolygonIsFilled ← bool
set default Polygon setting whether polygon is filled
no getter
setDefaultPolylineColor ← Color
set default Polyline color
no getter
setDefaultPolylineStroke ← double
set default Polyline stroke
no getter

Methods

createDefaultCircleMarker(LatLng point, Map<String, dynamic> properties) → CircleMarker
default callback function for creating Polygon
createDefaultMarker(LatLng point, Map<String, dynamic> properties) → Marker
default callback function for creating Marker
createDefaultPolygon(List<LatLng> outerRing, List<List<LatLng>>? holesList, Map<String, dynamic> properties) → Polygon
default callback function for creating Polygon
createDefaultPolyline(List<LatLng> points, Map<String, dynamic> properties) → Polyline
default callback function for creating Polyline
defaultFilterFunction(Map<String, dynamic> properties) → bool
the default filter function returns always true - therefore no filtering
defaultTappableMarker(Map<String, dynamic> properties, void onMarkerTap(Map<String, dynamic>)) → Widget
default function for creating tappable Marker
markerTapped(Map<String, dynamic> map) → void
default callback function called when tappable Marker is tapped
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
parseGeoJson(Map<String, dynamic> g) → void
main GeoJson parsing function
parseGeoJsonAsString(String g) → void
parse GeJson in String format
setDefaultCircleMarkerTapCallback(dynamic onTapFunction(Map<String, dynamic> f)) → void
set default CircleMarker tap callback function
setDefaultMarkerTapCallback(dynamic onTapFunction(Map<String, dynamic> f)) → void
set default Marker tap callback function
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited