MapPolyline class Null safety

Creates a polyline by connecting multiple geographical coordinates through group of points.

 late MapZoomPanBehavior _zoomPanBehavior;
 late List<MapLatLng> _polyLines;
 late MapShapeSource _mapSource;

  @override
  void initState() {
    _polyLines = <MapLatLng>[
      MapLatLng(13.0827, 80.2707),
      MapLatLng(14.4673, 78.8242),
      MapLatLng(14.9091, 78.0092),
      MapLatLng(16.2160, 77.3566),
      MapLatLng(17.1557, 76.8697),
      MapLatLng(18.0975, 75.4249),
      MapLatLng(18.5204, 73.8567),
      MapLatLng(19.0760, 72.8777),
    ];

    _mapSource = MapShapeSource.asset(
      'assets/india.json',
      shapeDataField: 'name',
    );

    _zoomPanBehavior = MapZoomPanBehavior(
        zoomLevel: 3, focalLatLng: MapLatLng(15.3173, 76.7139));
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: Text('Polyline')),
      body: SfMaps(
        layers: [
          MapShapeLayer(
            source: _mapSource,
            sublayers: [
              MapPolylineLayer(
                polylines: List<MapPolyline>.generate(
                  1,
                  (int index) {
                    return MapPolyline(
                      points: _polyLines,
                    );
                  },
                ).toSet(),
              ),
            ],
            zoomPanBehavior: _zoomPanBehavior,
          ),
        ],
      ),
    );
  }
Inheritance

Constructors

MapPolyline({required List<MapLatLng> points, List<double>? dashArray, Color? color, double? width, StrokeCap? strokeCap, VoidCallback? onTap})
Creates a MapPolyline.
const

Properties

color Color?
Color of the polyline. [...]
final
dashArray List<double>?
Apply dash pattern for the polyline. [...]
final
hashCode int
The hash code for this object. [...]
read-only, inherited
onTap VoidCallback?
Callback to receive tap event for this polyline. [...]
final
points List<MapLatLng>
The geolocation coordinates of the polyline to be drawn. [...]
final
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited
strokeCap StrokeCap?
Applies stroke cap to the start and end of the MapPolyline. You can set StrokeCap.round to get a semi-circle or StrokeCap.square to get a semi-square at the edges of the polyline. [...]
final
width double?
Width of the polyline. [...]
final

Methods

debugDescribeChildren() List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children. [...]
@protected, inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node. [...]
override
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
inherited
toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) DiagnosticsNode
Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep. [...]
inherited
toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) String
A string representation of this object. [...]
inherited
toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug}) String
Returns a string representation of this node and its descendants. [...]
inherited
toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) String
Returns a one-line detailed description of the object. [...]
inherited
toStringShort() String
A brief description of this object, usually just the runtimeType and the hashCode. [...]
inherited

Operators

operator ==(Object other) bool
The equality operator. [...]
inherited