I keep getting the error java.lang.NoClassDefFoundError: com.facebook.android.Facebook when running my application.
This occurs when calling:
facebook = new Facebook(APP_ID);
Addtional error message:
Could not find class 'com.facebook.android.Facebook', referenced from method com.example.example1.ShareOnFacebook.onCreate
I have add the facebook .jar file via Referenced libraries in Eclipse.
Has anyone encountered/solve this problem?
Just go to Project / Properties / Java Build Path / Order and Export and click on jar's checkbox. This will set jar as "exported". You can verify this in .classparh file: classpathentry exported="true" kind="lib" path="/my-jars/facebook-android-sdk-1.2.1.jar"
Don't forget to clean your project after that (Project / Clean...)
I heard that with the latest ADT you need to name your library folder "libs" and not "lib". But that didn't work for me.
So instead I had to resort to moving my jar file into the "assets" folder. That fixed my problem.
Completely retarded if you ask me.
I keep getting this issue too, the "Library Projects" (which should contain the com_facebook_android.jar) is not reflected in the "Package explorer" at all. But It is easily solved.
Right click on project>Properties>Android> Library -> remove the facebook library project added -> apply.
Then add the facebook library project again and click apply. This time "Library Projects" will come up in your Package Explorer on the right side.
Have you recently updated your ADT or Android SDK? Try deleting the reference to the facebook library or facebook jar and re-adding it.
They changed the way they handle external libraries references in the latest ADT updates, and it's thrown off a ton of my projects. Deleting the references and re-adding them seems to do the trick.
A solution that worked for me: the android-support-v4.jar file inside my project had a different version from the one inside facebook's project. So I copied facebook's support lib to my project libs folder and it worked like a charm.
