Listeners

Now that the location tracking is set up, you can subscribe to locations and events and use the data locally on your device or send it directly to your own backend server.

To do that, you need to set the location and event listener to true using the below method. By default the status will set false and needs to be set true in order to stream the location and events updates to the same device or other devices.

Roam.toggleListener(locations: true,events: true,callBack: ({user}) {
                          //Do something with user
                          print(user);
                        });

You can also get the current status of listeners with the below method.

Roam.getListenerStatus(callBack: ({user}) {
                      //Do something with user
                      print(user);
                    });

Subscribe Location and Trip Status

Now that you have enabled the location listener, use the below method to subscribe to your own or other user's location updates and events.

//subscribe to own location updates
Roam.subscribeLocation();

//subscribe to other user's location updates
Roam.subscribeUserLocation("ROAM-USER-ID");

//subscribe to trip status
Roam.subscribeTripStatus("ROAM-TRIP-ID");

You should set the location and event listener to false if you do not need to stream the user location.

Toggle Event Flags

To listen to events on the server-side, you should enable events for the user using the method below.

Roam.toggleEvents(location: true,geofence: true,trips: true,movingGeofence: true,callBack: ({user}) {
                          //Do something with user
                          print(user);
                        });

Trips V1

NOTE: Trips V1 is supported only up to 0.0.X. Trips V2 support starts from 0.1.X versions.

Use the below code to create a trip directly from the SDK. Set Boolean value true to create offline trip and false to create online trip.

Roam.createTrip(isOffline: false,callBack: ({trip}) {
                          //Do something with trip
                          print(trip);
                        });

Use the below code to start the trip with the previously created trip id.

Roam.startTrip(tripId: <TRIP-ID>);

Use the below code to pause the trip with the previously started trip id.

Roam.pauseTrip(tripId: <TRIP-ID>);

To resume the trip.

Roam.resumeTrip(tripId: <TRIP-ID>);

To end the trip.

Roam.endTrip(tripId: <TRIP-ID>);

To get the trip summary.

Roam.getTripSummary(tripId: <TRIP-ID>);

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Trips V2

Quick Trip

A RoamTrip object must be passed for quickTrip. Set isLocal Boolean value true to create offline trip and false to create online trip. Stops can be added using the stop property of the RoamTrip object. Tracking mode for the trip can be set using the trackingMode parameter.

RoamTrip quickTrip = RoamTrip(isLocal: false);
                        
RoamTripStops stop = RoamTripStops(radius, [longitude,latitude]);
quickTrip.stop.add(stop);

Roam.startTrip(({roamTripResponse}) {
                          print(roamTripResponse?.toJson());
                          //do something with roamTripResponse object
                        }, ({error}) {
                          print(error?.toJson());
                        },
                        roamTrip: quickTrip,
                        roamTrackingMode: RoamTrackingMode.ACTIVE);

Roam has three default tracking modes along with a custom version.

RoamTrackingMode.ACTIVE

RoamTrackingMode.BALANCED

RoamTrackingMode.PASSIVE

Custom Tracking for android

RoamTrackingMode.time(updateInterval, desiredAccuracy: DesiredAccuracy.HIGH);

RoamTrackingMode.distance(distanceFilter, stopDuration, desiredAccuracy: DesiredAccuracy.HIGH);

Custom Tracking for iOS

RoamTrackingMode.customIOS(activityType, desiredAccuracyIOS, allowBackgroundLocationUpdates, pausesLocationUpdatesAutomatically, showsBackgroundLocationIndicator, accuracyFilter, distanceFilter, updateInterval);

Create Planned Trip

Use the below code to create a trip using the RoamTrip class. Set Boolean isLocal value true to create offline trip and false to create online trip. Stops can be added using the stop property of the RoamTrip object.

RoamTrip roamTrip = RoamTrip(isLocal: false);

RoamTripStops stop = RoamTripStops(radius, [longitude,latitude]);

roamTrip.stop.add(stop);

Roam.createTrip(roamTrip, ({roamTripResponse}) {
                          print(roamTripResponse?.toJson());
                          //do something with roamTripResponse object
                        }, ({error}) {
                          String errorString = jsonEncode(error?.toJson());
                          print(errorString);
                        });

Start Planned Trip

To start a previously created trip, pass the trip id in startTrip method

Roam.startTrip(({roamTripResponse}) {
 	print(roamTripResponse?.toJson());
	//do something with roamTripResponse object
 }, ({error}) {
 	print(error?.toJson());
 },
 tripId: tripId);

Update Trip

To update an existing trip, create a RoamTrip object with isLocal boolean value and tripID.

RoamTrip updateTrip = RoamTrip(tripId: tripId);
updateTrip.isLocal = false;
updateTrip.description = "changed description";
Roam.updateTrip(updateTrip, ({roamTripResponse}) {
 	print(roamTripResponse?.toJson());
 	//do something with roamTripResponse object
 }, ({error}) {
  	print(error?.toJson());
 });

Pause Trip

To pause a running trip, pass the trip id to pauseTrip() method.

Roam.pauseTrip(tripId, ({roamTripResponse}) {
  	print(roamTripResponse?.toJson());
//do something with roamTripResponse object
}, ({error}) {
 print(error?.toJson());

Resume Trip

To resume a paused trip, pass the trip id to resumeTrip() method.

Roam.resumeTrip(tripId, ({roamTripResponse}) {
  	print(roamTripResponse?.toJson());
	//do something with roamTripResponse object
}, ({error}) {
 	print(error?.toJson());
});

End Trip

To end an existing trip, pass the trip id and bool value to stop tracking in endTrip() method.

Roam.endTrip(tripId, false, ({roamTripResponse}) {
  	print(roamTripResponse?.toJson());
	//do something with roamTripResponse object
 }, ({error}) {
 	print(error?.toJson());
});

Delete Trip

To delete a trip, pass the trip id in deleteTrip() method.

Roam.deleteTrip(tripId, ({roamDeleteTripResponse}) {
  	print(roamDeleteTripResponse?.toJson());
	//do something with roamDeleteTripResponse object
 }, ({error}) {
 	print(error?.toJson());
});

Sync Trip

To sync an offline trip, pass the trip id in the syncTrip method.

Roam.syncTrip(tripId, ({roamSyncTripResponse}) {
 	 print(roamSyncTripResponse?.toJson());
}, ({error}) {
 print(error?.toJson());
});

Get Trip

To get details of a trip, pass the trip id in getTrip() method.

Roam.getTrip(tripId, ({roamTripResponse}) {
  	print(roamTripResponse?.toJson());
	//do something with roamTripResponse object
 }, ({error}) {
 	print(error?.toJson());
});

Get Active Trips

To get active trips, pass bool value as true for offline trips and false for online trips.

Roam.getActiveTrips(false, ({roamActiveTripResponse}) {
 	print(roamActiveTripResponse?.toJson());
}, ({error}) {
 print(error?.toJson());
});

Get Trip Summary

To get the trip summary with route coordinates, pass trip id in the getTripSummary() method.

Roam.getTripSummary(tripId, ({roamTripResponse}) {
 print(roamTripResponse?.toJson());
}, ({error}) {
 	 print(error?.toJson());
});

Subscribe Trip

To subscribe to the real-time status of any ongoing trip, pass the trip id in the subscribeTrip() method.

Roam.subscribeTrip(tripId);

Unsubscribe Trip

Roam.unsubscribeTrip(tripId);