topic Re: Subscribe to location chances using LocationDisplay in Kotlin Maps SDK Questions

Subscribe to location chances using LocationDisplay

padmalcom — Mon, 04 Dec 2023 14:29:29 GMT

Hi, we want to react to location changes. We currently collect mapView.locationDisplay.location which works well but the flow is also collected when the location remains the same - and we want to catch changes. Is there a way to do that using the API? Or do we have to validate changes manually using a variable to compare the previous location state to the current?

Re: Subscribe to location chances using LocationDisplay

ChanganShi1 — Wed, 06 Dec 2023 21:48:21 GMT

You may construct a new SystemLocationDataSource to replace the default one. In the new SystemLocationDataSource, you could specify the minimum time updating interval and distance tolerance, which will filter out the locations not changed much beyond the tolerance.

Re: Subscribe to location chances using LocationDisplay

padmalcom — Thu, 07 Dec 2023 07:32:40 GMT

Thank you @ChanganShi1, that is a very nice solution. Nevertheless, we found a Flow based way to avoid events when the position does not change:

mapView.locationDisplay.location.distinctUntilChangedBy {

it?.position

}.collect { ... }