By danhanly
on Fri, 08/09/2013 - 08:57
Hi.
I can scan any of my targets, but when I close the trackable, and try to scan another one, the scan lines disappear and I get the below error:
NullReferenceException at StateManagerImpl.RemoveDisabledTrackablesFromQueue (System.Collections.Generic.LinkedList`1& trackableIDs) [0x00000] in <filename unknown>:0 at QCARManagerImpl.UpdateTrackers (FrameState frameState) [0x00000] in <filename unknown>:0 at QCARManagerImpl.Update (ScreenOrientation counterRotation, CameraDeviceMode deviceMode, .VideoModeData& videoMode) [0x00000] in <filename unknown>:0 at QCARBehaviour.Update () [0x00000] in <filename unknown>:0
It's not isolated to any particular trackable, but it is always the second trackable i.e. once a trackable has already appeared, the next one crashes.
Can anybody help with this?
Null Reference Exception on Recognition of Second Target
Which plaform/device/sdk ? and any other details that you can think of that someone might need to help you.
..and does it happen with the Vuforia CR sample/database?
N
Null Reference Exception on Recognition of Second Target
I don't know what I did, but it's fixed.
Basically, what I think happened is that when our trackable content was closed (via a little X button), it was reregistering the CloudRecoBehaviour even handler.
Null Reference Exception on Recognition of Second Target
Good to hear :)
Thanks for the update.
N