I'm having the same issue. I have modified the ImageTargets somewhat to suit my needs a bit better, but the essentails are the same. - i use QCAR to detect, rather than track images.
The app works nicely on a Sony Tablet S, running Android 4.0.3, and a Nexus-7 running 4.2.2 as well as a Nexus-10 (can't remember which version), but while testing on a Samsung Galaxy Tab, The app dies just after initializing QCAR.
I don't have that tablet at hand, but a collegue is using it for testing, and this makes debugging a pain. I've tested it myself on the others. The app dies without an exeption, and no stacktrace is logged, thus i added some logging to indicate which functions are called in both the native and the java part.
I asked my collegue to record the logcat-log and send it to me, and in that, i found the very same error-message as has been reported by the others. But instead of dying immidiately, i got one more line:
I/QCARSampleGLView( 6172): Creating OpenGL ES 2.0 context
D/ScanFragmentRenderer( 6172): onSurfaceCreated()
I/QCAR ( 6172): Java_dk_libero_app_fragments_ScanFragmentRenderer_initRendering
D/ScanFragmentRenderer( 6172): onSurfaceChanged()
I/QCAR ( 6172): Java_dk_libero_app_fragments_ScanFragmentRenderer_updateRendering
I/QCAR ( 6172): Configure Video Background : Video (800,600), Screen (640,401), mSize (640,480)
D/DetectPuppetFragment( 6172): ScanFragment::updateRenderView
I/QCAR ( 6172): Java_dk_libero_app_fragments_ScanFragmentRenderer_updateRendering
I/QCAR ( 6172): Configure Video Background : Video (800,600), Screen (640,480), mSize (640,480)
I/QCAR ( 6172): Java_dk_libero_app_fragments_DetectPuppetFragment_setProjectionMatrix
D/MPLSensor( 191): setDelay : handle=4, delay=66667000
I/ ( 191): mpu3050_suspend: suspending sensors to 0000
I/WindowManager( 191): WIN DEATH: win
I/ActivityManager( 191): Process app.processName (pid 6172) (adj 0) has died.
W/ActivityManager( 191): Force removing r: app died, no saved state
The error apparantly happens right after the call to the native function "setProjectionMatrix".
Interestingly, i have previously had a similar issue, when using an imagedetection-algoritm implemented in OpenCV, also exiting the app just as the camera view appeared ready to start.
Even though it looks like you are using "FastCV" and not OpenCV, could these be related? Or does the Samsung Galaxy Tab, simply not like Computer-Vision as much as we do?
Cheers
Christian
Hi to all,
I am new to vuforia, I am working on tracking physical 3d object project using vuforia ObjectScanner, I scanned an object and uploaded my .od file in your target manager. then I downloaded and import in my project. It works fine in unity but Problem is when I create apk file and install in my Nexus9 device, camera not opened, black screen. Please Help me.