I am building an app using Phonegap in visual studio 2013 , I try to use this plugin of QR code reader:
But with no success, but the app doesn't recognize it.
How can I implement a QR-Code Scanner in my application?
Since you're using build.phonegap.com, you need to use their version of the plugins.
You can use this plugin by editing you config.xml
<gap:plugin name="com.phonegap.plugins.barcodescanner" version="1.1.0" />