title: java.lang.NoClassDefFoundError: com.facebook.android.Facebook
body: <p>I keep getting the error java.lang.NoClassDefFoundError: com.facebook.android.Facebook when running my application.</p>
  
  <p>This occurs when calling:</p>
  
  <p>facebook = new Facebook(APP_ID);</p>
  
  <p>Addtional error message: </p>
  
  <p>Could not find class 'com.facebook.android.Facebook', referenced from method com.example.example1.ShareOnFacebook.onCreate</p>
  
  <p>I have add the facebook .jar file via Referenced libraries in Eclipse.  </p>
  
  <p>Has anyone encountered/solve this problem?</p>