How can you integrate the front-facing camera of iPhone 4/iPod Touch with ZXing?

[Kofi]

I want to use the front-facing camera of an iPhone 4/iPod Touch
instead of the rear-view camera to scan bar codes using the ZXing app.
I was wondering if someone can help or show me how to integrate the
front-facing camera and ZXing iPhone app?

I added these lines of code to the RootViewController.mm file:

widController.SourceType = UIImagePickerControllerSourceTypeCamera; //
Camera
widController.cameraDevice =
UIImagePickerControllerCameraDeviceFront; //Activate front-facing
camera for iDevice

But it was giving me errors, so I wasn't sure if I have to make other
changes to another external file.

I was wondering if someone can show me the changes I have to make in
order to activate the front-facing camera for ZXing?

[Romain]

I you are using ZXingWidget, it does not user UIImagePickerController
anymore. You you take a llok at how to make a AVCaptureInput to use
the front facing camera