CODEWITHSUNDEEP
geolocationopenlayers-3
slevin
slevin

Reputation: 3886

Turn off Openlayers 3 Geolocation

So, my idea of turning off the Geolocation functionality in an Openlayers 3.9.0 map is to have a toggle button that when is clicked it stops the tracking and removes the feature from the geolocation layer

geolocation.setTracking('false');
featuresOverlay.getSource().clear();

and then to turn it on again it turns the tracking on, adds a feature to the geolocation layer, sets its coordinates and re-centers the map

geolocation.setTracking('true');
featuresOverlay.getSource().addFeature(positionFeature);
var coordinates = geolocation.getPosition();
positionFeature.setGeometry(coordinates ? new ol.geom.Point(coordinates) : null);
view.setCenter(coordinates);

Well, this technically does not count as turning on/off the geolocation because it removes all the visual elements, it does not actually turns on/off the API. Is there such a possibility, or the above are enough?

Upvotes: 3

Views: 1286

Answers (1)

Alvin Lindstam
Alvin Lindstam

Reputation: 3142

Sure it does, after one minor change.

Assuming that geolocation in your code references an instance of ol.Geolocation, calling geolocation.setTracking(false) will make the geolocation call clearWatch on the browsers geolocation API. The relevant code is here.

However, setTracking expects a boolean value. You send the string 'false', which is interpreted as a truthy value (since it's a non-empty string). Remove the quotation marks from the setTracking paramters, and it should work as expected.

Upvotes: 4

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