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TargetFinder Scanline turns Black on second init

April 8, 2013 - 12:18am #1

Hi

I am having a bit of an issue with the cloud targetfinder scan line.

I have an app where my cloud view opens and displays the targetfinder scanner etc. When I switch to another view I close down my AR completely. When I come back to my AR view and reinitialise everything the scanline is a black bar, as if it is displaying an invalid texture. The scanning key points display correctly, although ocassionally but not always they too display as black squares rather than with their correct textures.

It is very difficult to debug this since the targetfinder is all wrapped up behind TargetFinder.h, the textures seem to be generated procedurally and I can't tell when they are actually rendered in the QCAR render loop.

Any pointers would be much appreciated. 

TargetFinder Scanline turns Black on second init

April 8, 2013 - 2:24am #7

Ahh sorry I didn't see that there was a section specifically for IOS. Will repost now.

 

Thanks

TargetFinder Scanline turns Black on second init

April 8, 2013 - 2:21am #6

Ok. If it i about iOS, then it would be more effective to post this in the iOS section of the Forum;

may I ask you to repost your message (specifying that it occurs on iPhone 5) here:

https://developer.vuforia.com/forum/ar-technical-discussion/ios

 

TargetFinder Scanline turns Black on second init

April 8, 2013 - 2:07am #5

This on on IOS

iPhone 5. I have not tried other devices yet.

TargetFinder Scanline turns Black on second init

April 8, 2013 - 2:06am #4

Ok, thanks for confirming. Do you see this on a specific device (which model and Android version ? )   or in more devices ?

 

TargetFinder Scanline turns Black on second init

April 8, 2013 - 1:01am #3

Hi Allessandro

Yes it is destroyed. onDestroy() is definitely called. (by design) I want it shut down completely when i leave the view.

TargetFinder Scanline turns Black on second init

April 8, 2013 - 12:29am #2

Hi,

when you say "I close down my AR completely", do you mean your AR Activity is destroyed, or just paused ?

it would be good to check if the onDestroy() method is called (or otherwwise only the onPause() method is called); you could verify that via some Logs.

 

 

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