error in zxing api

I have downloaded zxing apis from net and included all the 6 needed frameworks, but still I am getting error like:

• 'AVCaptureDevice' undeclared (first use i开发者_运维百科n this function).

• 'AVCaptureTorchModeOn' undeclared (first use in this function)

Plz guide me how it will solve.

Thanks.

---

You need to add the AVFoundation framework. If you have already done this, check that it is enabled for the target you are building.