TMapview and changing marker's position

[John van de Waeter 4]

Hi All,

I have a TMapview and 12 markers.

The position (Lat/Long) of these markers change every 0.5 seconds.

Everytime I delete the Markers and add them with the new positions.

 

This works OK on Android, but on iOS the app crashes the iPhone after about an hour. The iPhone gets completely frozen, no response to Screen  Home-key and On/Off key anymore. After a while the iPhone automatically reboots.

 

The deleting of the markers is done by Marker.DisposeOf.   If I change to Marker.Remove, result is the same.

I guess it is a memory issue inside the mapview. No errors are thrown if I use a try... except.

 

Instead of recreating the Markers, I tried to set a new location using Marker.Descriptor.Position.Latitude:=..., but Delphi complains that "Left Side cannot be assigned to", so readonly.

 

Is it really necessary to delete/recreate a marker when it's position is changed?

 

Thanks,

John