Android and Facebook SDK

Question

I'm using Facebook SDK in Android. I'm trying to create an app that uses facebook without having facebook SDK reside in some Activity or Fragment. i.e - I have a button that after I click it, I want to allow to share some image.

I got it to open the facebook SDK, ask for permission but it is stuck on Session.OPENING and then I can't request permissions -and thus can't publish.

My code is as follows (I didn't post the variables and helper function as they don't add info). It resided in a class and not inside an activity.

At this time I will call PostToFacebook once (it will try to open the session) and then I will call it again - so it will try to post. I will fix this duplicate later.

public void postToFacebook(byte[] ImageToPost, Activity activity, Bundle savedInstanceState) {

    Session session = Session.getActiveSession();

    if (session != null){
        SessionState state = session.getState();
        Log.d("facebook","in PostToFacebook. session: " + state.name());

        if (!state.isOpened()) {
            Log.d("facebook","Session is not open - aborting publish");
            return;
        }

        // Check for publish permissions    
        List<String> permissions = session.getPermissions();
        if (!isSubsetOf(PERMISSIONS, permissions)) {
            pendingPublishReauthorization = true;
            Session.NewPermissionsRequest newPermissionsRequest = new Session.NewPermissionsRequest(activity, PERMISSIONS);
            session.requestNewPublishPermissions(newPermissionsRequest);
            return;
        }

        Bundle postParams = new Bundle();
        postParams.putString("name", "Name of post");
        postParams.putString("caption", "Caption of post [testing]");
        postParams.putString("description", "The Facebook SDK for Android makes it easier and faster to develop Facebook integrated Android apps.");
        postParams.putString("link", "some link");
        postParams.putString("picture", "https://raw.github.com/fbsamples/ios-3.x-howtos/master/Images/iossdk_logo.png");

        Request.Callback callback= new Request.Callback() {
            public void onCompleted(Response response) {
                Log.d("facebook","Callback after onCompleted");

                JSONObject graphResponse = response
                                           .getGraphObject()
                                           .getInnerJSONObject();
                String postId = null;
                try {
                    postId = graphResponse.getString("id");
                } catch (JSONException e) {
                    Log.i(TAG,
                        "JSON error "+ e.getMessage());
                }
                FacebookRequestError error = response.getError();
                if (error != null) {
                    Toast.makeText(MainMirrorActivity.context
                         .getApplicationContext(),
                         error.getErrorMessage(),
                         Toast.LENGTH_SHORT).show();
                    } else {
                        Toast.makeText(MainMirrorActivity.context
                             .getApplicationContext(), 
                             postId,
                             Toast.LENGTH_LONG).show();
                }
            }
        };

        Request request = new Request(session, "me/feed", postParams, 
                              HttpMethod.POST, callback);

        RequestAsyncTask task = new RequestAsyncTask(request);
        task.execute();
    } else { 
        // open new session
        Log.d("facebook","opening a new session");
        if (savedInstanceState != null) {
            session = Session.restoreSession(activity, null, statusCallback, savedInstanceState);
        }
        if (session == null) {
            session = new Session(activity);
        }
        Session.setActiveSession(session);
        //SessionState state = session.getState();
        if (session.getState().equals(SessionState.CREATED_TOKEN_LOADED)) {
            Log.d("facebook","openForRead");
            session.openForRead(new Session.OpenRequest(activity).setCallback(statusCallback));
        }

        if (!session.isOpened() && !session.isClosed()) {
            Log.d("facebook","openForRead if session not open and not closed");
            session.openForRead(new Session.OpenRequest(activity).setCallback(statusCallback));
        } else {
            Log.d("facebook","openActiveSession");
            Session.openActiveSession(activity, true, statusCallback);
        }
    }
}

When I'm checking the status it is always stuck on OPENING.

Many Thanks!

P.S - the code seems to almost work, so it might help someone anyway.

Answer 1

I'm assuming that the code you have posted is the first point at which the session object is initialised. First I would try in your else block, when your getActiveSession == null

Session session = Session.openActiveSessionFromCache(getApplicationContext());

instead of

session = new Session(activity);

as your call to get a session. But I don't think that's your primary problem.

Attach a callback to the session so that you can perform actions once the state has completed opening.

After your null check, I would assume the possibility that the session is not yet ready, and attach a callback for when it is ready

    if(session.isOpened()){
            doSomething(session);
        } else {
            session.addCallback(new Session.StatusCallback() {
                @Override
                public void call(Session session, SessionState state, Exception exception) {
                    if(session.isOpened()){
                        doSomething(session);
                    }

                }
            });
        }