NoClassDefFoundError in facebook integeration

Question

I am using facebook integration API in my code. I have created sha1 key for Facebook,I got my APIID ,but the problem is that when I am trying to add facebook library in my project it's adding fine ,but when I am running it, its giving me NoClassDefFoundError error and library is not adding properly, where am I doing wrong?

Here is the image:

Here my facebook library is not adding properly, What should I do ?

Answer 1

Your facebook SDK library project and your Current Android project both should be in same directory. Try moving your facebook sdk library to your project's folder then it will 100% work properly.

For future reference always remember that your library project must me in same folder where your appliction is.

Answer 2

Try this:

Go to Project/Properties/Java Build Path/Order and Export -- Make sure there's a check in front of Android Dependencies and the support library, if you use it.Mark all checkboxes and Click on Apply and clean the project.

Hope this helps.

Answer 3

Move your Facebook SDK library to your project's work space then it will 100% work properly.I think they both are not in the same directory , and you are suggested to check the other imports of any other project of your work space and put the Facebook SDK same as the others.