B4J Question [SOLVED] jGoogleMaps: Markers are displayed multiple times

[rwblinn]

Hi,

when building a google map first time, with two markers, the markers are displayed multiple times (see picture). By clicking on zoom, the map gets refreshed and the two markers are displayed correctly.
When rebuilding the map again with different markers, the markers are build correctly.

Have tried to init the cameraposition twice with different zoomlevels, but that did not solve the issue.

Any ideas?

 

[eurojam]

Hi Rob,
do you have a code fraqment to reproduce that?

best
stefan

 

[rwblinn]

Hi,

Via trial-and-error solved by setting the cameraposition twice with different zoom levels.

...
Utils.SetCameraPostion(MapTrack, llStart.Latitude, llStart.Longitude, ZoomLevel / 4)
Utils.SetCameraPostion(MapTrack, llStart.Latitude, llStart.Longitude, ZoomLevel)
...

Defined in a Utils Module

#If B4J
Sub SetCameraPostion(mMap As GoogleMap, mLat As Double, mLon As Double, mZoomLevel As Float)
   Log("SetCameraposition: Zoomlevel=" & mZoomLevel)
   Dim cp As CameraPosition
   cp.Initialize(mLat, mLon, mZoomLevel)
   mMap.MoveCamera(cp)
End Sub
#End If

 

[jmon]

Yes I think that's a Web view refresh bug. There is the same bug if you delete the markers they still appear until you zoom out.

 

[Magma]

Just found a better solution !!!!!

USE .visible /// first false / then change position / then make it visible again!!!!

Sub bam_tick
    boom.Enabled=False
    mark(hr).Visible=false
    Dim NewPosition As LatLng
    NewPosition.Initialize(ooo,15)
    ooo=10+NewPosition.Latitude+0.0001
    m(1).Position=NewPosition
     Sleep(50)
     mark(hr).Visible=True
    boom.Enabled=True
End Sub

YES!