Android : Integrate ZXing QR code scanner without multiple application refrence

I am Sajid here as a android developer. I have one issue when start to scan, before coming camera screen the multiple application refrence icons are coming with my application which I dont want to choose, because I want directly scan without other other application refrence. In my point of view when I am scaning the camera activity should come direcly without other application refrence.

Can any one help me please.

The below link codes I am using: Integrate ZXing QR code scanner without installing BarCode Scanner