I\'m trying to add ZXing to my project (add a button which calls the scanner upon press). I found this: http://groups.google.com/group/android-developers/browse_thread/threa
if you use the zxing first time,I recommend this project*1*,it's a part of zxing, all you need is import the project and run it.This project is an attempt to make working with QR codes in Android a bit easier.
With strongly recommend to bigenner.good luck.
At last,thanks Sean Owen;