Android : Zxing library cannot be resolved

I am developing app with zxing library. I imported the zxing project into my work place. When i importing there were some problems i faced.

1. Compile the project by java 1.7. I done it.


2. CameraConfigurationUtils was missing. I copied from the library source.


3. Resource id's cannot be used to check in the switch case. I changed it to if else.

But finally there is a broblem in the 1. emailResult.getTos() was not resolved in EmailAddressResultHandler 2. Then i built the project there comes the problem R.java cannot be resolved throughout my application.

What i am doing wrong?