Android Facebook SDK 3.0 Session State Discovery

Question

I connect Facebook Login using my documentation. I encounter a problem when when I click the Facebook login widget, the session changes to “Opening” and the application crashes

My layout for Facebook button

<com.facebook.widget.LoginButton android:id="@+id/authButton" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:layout_centerHorizontal="true" /> 

Fragment

 public class FacebookFragment extends Fragment { private static final String TAG = "FacebookFragment"; private UiLifecycleHelper uiHelper; private Session.StatusCallback callback = new Session.StatusCallback() { @Override public void call(final Session session, final SessionState state, final Exception exception) { onSessionStateChange(session, state, exception); } }; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.activity_main, container, false); LoginButton authButton = (LoginButton) view.findViewById(R.id.authButton); authButton.setFragment(this); authButton.setReadPermissions(Arrays.asList("user_likes", "user_status")); return view; } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); uiHelper = new UiLifecycleHelper(getActivity(), callback); uiHelper.onCreate(savedInstanceState); } @Override public void onResume() { super.onResume(); Session session = Session.getActiveSession(); if (session != null && (session.isOpened() || session.isClosed()) ) { onSessionStateChange(session, session.getState(), null); } uiHelper.onResume(); } @Override public void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); uiHelper.onActivityResult(requestCode, resultCode, data); } @Override public void onPause() { super.onPause(); uiHelper.onPause(); } @Override public void onDestroy() { super.onDestroy(); uiHelper.onDestroy(); } @Override public void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); uiHelper.onSaveInstanceState(outState); } private void onSessionStateChange(Session session, SessionState state, Exception exception) { if (state.isOpened()) { Log.i(TAG, "Logged in..."); } else if (state.isClosed()) { Log.i(TAG, "Logged out..."); } else Log.i(TAG, session.toString()); } 

}

and in action I performed the required onActivityResult and extracted the fragment

 protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); if(savedInstanceState == null) { // Add the fragment on initial activity setup mainFragment = new FacebookFragment(); getSupportFragmentManager() .beginTransaction() .add(android.R.id.content, mainFragment) .commit(); } else { // Or set the fragment from restored state info mainFragment = (FacebookFragment) getSupportFragmentManager() .findFragmentById(android.R.id.content); } } @Override public void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); Session.getActiveSession().onActivityResult(this, requestCode, resultCode, data); } 

I thought that maybe the problem lies in Key Hash, but I completely followed the directions for the answer to this question Key hash for the Android-Facebook application

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Any guidance on how to get Open status would be greatly appreciated.

Answer 1

The problem was using android: clearTaskOnLaunch = "true" in the action that the facebook login was doing. Failed to call the OnActivityResult function. I was able to get an exception when I ran the application in debug mode.

Answer 2

Add session.addCallback(callback) to your onResume() :

 super.onResume(); Session session = Session.getActiveSession(); session.addCallback(callback);