WinRT not Scanning second and more qr code

Nov 25, 2014 at 10:34 PM

I use the ZXing library for the first time with use here's sample. I made my first app with Zxing for WinRT but i have a problem about qr code scanning. Actually my app scanning the first qr code than i am starting the camera preview because here's sample didn't do that. And my app not scanning any more qr codes. So result return null only once. Anybody can help me?

Thank you.