Android 100 API: stop Location Display

LageplanGöttingen — Sat, 11 Dec 2021 15:04:58 GMT

Hi,

I'm using

mapView.getLocationDisplay().setShowLocation(true);
mapView.getLocationDisplay().setAutoPanMode(LocationDisplay.AutoPanMode.RECENTER);
mapView.getLocationDisplay().startAsync();

to start the location service in my  100.2.1 Android app, and 
mapView.getLocationDisplay().stop();
mapView.getLocationDisplay().setShowLocation(false);
mapView.getLocationDisplay().setAutoPanMode(LocationDisplay.AutoPanMode.OFF)

to stop it. I stop the service every time I pause the app, 
and restart it only if the user clicks on the GPS button on my map.

However, it sometimes happens that when I stop the Location Display, then immediately pause and resume the app,
the location marker is still shown on the map (although it is no longer animated or moving).

This wouldn't really bother me that much, but unfortunately, if I now click on a POI on my map,
the MapView only briefly zooms to that POI (as expected), and then instantly zooms back to the 
location marker, even though the AutoPanMode is off and the LocationDisplay is not running! 
(mapView.getLocationDisplay().isStarted() = false!).

The same happens occasionally if I do not pause the app, but simply switch basemaps. 
I.e., I stop the Location Display (the location marker disappears), switch to a new basemap, and 
(sometimes) see the location marker on the map again, and the map keeps zooming back to this location.

Is this a bug in the API? Or what might cause this issue?

Thank you,

Claudia

Re: Android 100 API: stop Location Display

LageplanGöttingen — Sat, 11 Dec 2021 15:05:00 GMT

I eventually managed to find a solution.

I changed the order of my cancellation methods to

locationDisplay.setAutoPanMode(LocationDisplay.AutoPanMode.OFF);
locationDisplay.stop();

Now the map does no longer zoom to the location marker after stopping the service, which is great.


I still think there is a bug in the API, though. If I also put
locationDisplay.setShowLocation(false);
locationDisplay.setShowPingAnimation(false);
locationDisplay.setShowAccuracy(false);

BEFORE locationDisplay.stop() instead of after, it won't longer happen that there is still a static location
marker on the map after cancellation. But in return, the marker doesn't immediately show up when
the service is running and a new location was found. That's why I keep these three methods 
AFTER locationDisplay.stop(). I don't really care if sometimes the marker is still visible after stopping the LocationDisplay
as long as the map does not zoom to this point.

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Android 100 API: stop Location Display

Re: Android 100 API: stop Location Display