NmeaLocationDataSource class final

An NMEA location data source object.

This object will parse specific NMEA messages pushed into it. Valid GGA, GSA, GST, GSV, RMC, VTG messages are parsed and, depending upon the message type and contents, a LocationDataSourceLocationChangedEvent or NmeaLocationDataSourceSatellitesChangedEvent may be raised. The LocationDataSourceLocationChangedEvent will return a NmeaLocation object. The NmeaLocationDataSourceSatellitesChangedEvent will return an array of NmeaSatelliteInfo objects. This data source is based on NMEA version 4.11 (November 2018).

Inheritance

Constructors

NmeaLocationDataSource({SpatialReference? receiverSpatialReference, SpatialReference? outputSpatialReference, DatumTransformation? outputDatumTransformation})
Creates an NMEA data source object.
factory
NmeaLocationDataSource.withProvider(FutureOr<NmeaDataProvider> generateNmeaDataProvider(), {SpatialReference? receiverSpatialReference, SpatialReference? outputSpatialReference, DatumTransformation? outputDatumTransformation})
Creates an NMEA data source object with a function that provides NmeaDataProvider objects.
factory

Properties

error → ArcGISException?
An error that describes a problem encountered while starting or running the LocationDataSource.
no setterinherited
exception → Exception?
no setterinherited
hashCode → int
The hash code for this object.
no setterinherited
onErrorChanged → Stream<ArcGISException?>
Indicates that the LocationDataSource.error property has changed.
no setterinherited
onExceptionChanged → Stream<Exception?>
no setterinherited
onHeadingChanged → Stream<double>
Set the heading changed callback function for the location data source.
no setterinherited
onLocationChanged → Stream<ArcGISLocation>
Set the location changed callback function for the location data source.
no setterinherited
onSatellitesChanged → Stream<List<NmeaSatelliteInfo>>
Set the satellite info changed callback function for the location data source.
no setter
onSentenceReceived → Stream<String>
Sets the NMEA sentence received callback function for the location data source.
no setter
onStatusChanged → Stream<LocationDataSourceStatus>
Set the status changed callback function for the location data source.
no setterinherited
outputDatumTransformation → DatumTransformation?
The DatumTransformation to be used in the project operation.
no setter
outputSpatialReference → SpatialReference?
If set calls the GeometryEngine.project method to generate the output spatial reference.
no setter
receiverSpatialReference → SpatialReference
The SpatialReference to be assigned to the output NmeaLocation, the default is WGS84
no setter
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
status → LocationDataSourceStatus
The current status of the location data source.
no setterinherited

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
pushData(Uint8List? data) → void
Reads the input NMEA data creating a NmeaLocation. The NMEA location data source needs to be started before calling this method.
start() → Future<void>
Starts the location data source asynchronously and prepares to begin receiving location updates.
inherited
stop() → Future<void>
Stops the location data source asynchronously.
inherited
toString() → String
A string representation of this object.
inherited
updateHeading(double heading) → void
Updates the current heading angle, in degrees clockwise, relative to north.
inherited
updateLocation(ArcGISLocation location) → void
Updates the position of the current location.
inherited

Operators

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