NoClassDefFoundError: @ FacebookSocialNetwork class

[anvesh523]

In below line at runtime app is going to crash ..... with NoClassDefFoundError " FacebookSocialNetwork fbNetwork = new FacebookSocialNetwork(this, fbScope); "

E/AndroidRuntime﹕ FATAL EXCEPTION: main java.lang.NoClassDefFoundError: com.github.gorbin.asne.facebook.FacebookSocialNetwork$1 at com.github.gorbin.asne.facebook.FacebookSocialNetwork.(FacebookSocialNetwork.java:87) at a2a.example.testapp.MainFragment.onCreateView(MainFragment.java:75) at android.support.v4.app.Fragment.performCreateView(Fragment.java:1962) at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1016) at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1197) at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:738) at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1562) at android.support.v4.app.FragmentController.execPendingActions(FragmentController.java:330) at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:511) at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1167) at android.app.Activity.performStart(Activity.java:5192) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2279) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2358) at android.app.ActivityThread.access$600(ActivityThread.java:156) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1340) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:153) at android.app.ActivityThread.main(ActivityThread.java:5299) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:511) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:833) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600) at dalvik.system.NativeStart.main(Native Method)