I've found this code from Raghav Sood's Pro Android Augmented Reality book. I've tried to execute the code as it is written in the book but yet i am facing so much of difficulties.i've tried cleaning and building of project. Put the checkbox tick in the project's property dialogue box. Checked import Android.R presence in my code. Even i uninstalled my AndroidSDK and reinstalled it with different set of Android versions and APIs. Uninstalled and reinstalled Eclipse.I've found this code from Raghav Sood's Pro And