PWA JavaScript struggling with GPS geolocation coordinates

I am experiencing issues with the GPS coordinates being stuck when using geolocation in a Progressive Web App (PWA). Sometimes, the coordinates get stuck at the previous location, even if the user has moved since then.

I suspect that this is due to the GPS tracking the last known location rather than updating to the current one.

Is there a way to refresh the GPS and only send data once it has a valid, updated connection?

Below is the code for the geolocation:

   if ("geolocation" in navigator && navigator.geolocation != null) {
                try {
                    navigator.geolocation.getCurrentPosition(position => {
                        //if geolocation has a valid connection
                        console.log(position);
                        $('#geolocation_form_latitude').val(position.coords.latitude);
                        $('#geolocation_form_longitude').val(position.coords.longitude);
                        $('#geolocation_form').submit();

                    }, error => {
                        $('#geolocation_form').submit();
                    })
                }
                catch (e) {
                    $('#geolocation_form').submit();
                }
     }

Answer №1

Mobile operating systems frequently employ caching techniques for battery conservation purposes - this helps reduce the need to activate power-intensive radios like GPS and WiFi. As a result, most mobile browsers may exhibit outdated location behavior because they rely on the OS's location services.

Try utilizing the options available in the HTML5 geolocation API to improve the accuracy of location data. It is worth noting that Safari and Chrome on iOS provide additional properties in the returned geolocation object, as mentioned in Chrome developer documentation - an example being the "Cache Age" key displayed on this test page, which can be used to verify the freshness of location data.

maximumAge This parameter represents a positive long value indicating the maximum age in milliseconds of a cached position that can be accepted as valid. When set to 0, it means the device cannot utilize a cached position and must try to fetch the current location. Alternatively, setting it to Infinity mandates returning a cached position regardless of its age. Default: 0.

enableHighAccuracy A boolean value that signals the application's desire for optimal results. If true and if the device can provide a more accurate position, it will do so. However, bear in mind that this may lead to slower response times or increased power consumption (especially with a GPS chip on a mobile device). Conversely, setting it to false allows the device to conserve resources by responding more swiftly and/or consuming less power. Default: false.

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