android - Facebookの公開後にインデックスにフラグメントが存在しないアクティビティ結果

Question

Facebook SDK 3 を使用しており、共有ボタンのあるフラグメントがあります。
最初の呼び出しでは機能します。
2 回目の呼び出しで、フラグメントがアクティビティから切り離された
06-24 10:24:47.430: W/FragmentActivity(2812): Activity result no fragment exists for index: 0x3face
後onActivityResult、そのアクティビティの前のフラグメントが表示されます。

これが私のコードです：

public class AboutFragment extends BaseFragment implements OnClickListener, Session.StatusCallback {

    private static final String GA_CATEGORY = "About";
    private static final List<String> PERMISSIONS = Arrays.asList("publish_actions");

    private Button mShareEmailButton;
    private Button mShareFacebookButton;
    private Button mConatctUsButton;
    private WebView mAboutText; 

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        super.onCreateView(inflater, container, savedInstanceState);

        View v = inflater.inflate(R.layout.fragment_about, container, false);

        mShareEmailButton = (Button) v.findViewById(R.id.buttonShareEmail);
        mShareFacebookButton = (Button) v.findViewById(R.id.buttonShareFacebook);
        mConatctUsButton = (Button) v.findViewById(R.id.buttonContactUs);
        mAboutText = (WebView) v.findViewById(R.id.webViewAbout);

        mAboutText.loadUrl("file:///android_asset/about.html"); 

        mShareEmailButton.setOnClickListener(this);
        mShareFacebookButton.setOnClickListener(this);
        mConatctUsButton.setOnClickListener(this);

        return v;
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.buttonShareEmail:
                GA_Handler.sendEvent(getActivity(), GA_CATEGORY, "Share_click", "Email");
                shareViaEmail();
                break;

            case R.id.buttonShareFacebook:
                GA_Handler.sendEvent(getActivity(), GA_CATEGORY, "Share_click", "FB");
                checkFacebookLogin();
                break;

            case R.id.buttonContactUs:
                GA_Handler.sendEvent(getActivity(), GA_CATEGORY, "Contact_us_click");
                ((BaseNavigationActivity)getActivity()).loadFragment(new ContactUsFragment());
                break;

            default:
                break;
        }
    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        boolean isFacebookResponse =
                Session.getActiveSession().onActivityResult(getActivity(), requestCode, resultCode, data);
        if (isFacebookResponse) {
          System.out.println("FB Response");
        }
    }

    /**
     * Login to FB if needed
     */
    public void checkFacebookLogin() {

        try {
            logInToFacebook();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }



    private void logInToFacebook() {
        String app_id = getString(R.string.app_id);

        Settings.addLoggingBehavior(LoggingBehavior.INCLUDE_ACCESS_TOKENS);

        Session session = new Session.Builder(getActivity().getApplicationContext())
                .setApplicationId(app_id)
                .build();
        session.addCallback(this);
        Session.setActiveSession(session);

        // Login
        if (!session.isOpened() && !session.isClosed()) {
            session.openForPublish(new Session.OpenRequest(this)
                    .setPermissions(PERMISSIONS)
                    .setCallback(this));
        } else {
            Session.openActiveSession(getActivity(), true, this);
        }
    }

    @Override
    public void call(Session session, SessionState state, Exception exception) {
        System.out.println("ABOUT:  " + state);
        if (state == SessionState.OPENED) {
            if(isAdded()){
                publishFeedDialog();
            }else{
                System.out.println("Home activity not attached");
            }
        }
    }

    /**
     * Publish to FB
     */
    private void publishFeedDialog() {
        Bundle params = new Bundle();
        params.putString("name", getString(R.string.fb_share_name));
        params.putString("caption", getString(R.string.fb_share_caption));
        params.putString("description", getString(R.string.fb_share_description));
        params.putString("link", getString(R.string.fb_share_link));
        params.putString("picture", getString(R.string.fb_share_picture));

        WebDialog feedDialog = (
                new WebDialog.FeedDialogBuilder(getActivity(),
                        Session.getActiveSession(), params)) //
                .setOnCompleteListener(new WebDialog.OnCompleteListener() {

                    Context appContext = getActivity().getApplicationContext();

                    @Override
                    public void onComplete(Bundle values, FacebookException error) {
                        if (error == null) {
                            // When the story is posted, echo the success
                            // and the post Id.
                            final String postId = values.getString("post_id");
                            if (postId != null) {
                                DebugToast.show(appContext, "Posted story, id: " + postId);
                            } else {
                                // User clicked the Cancel button
                                DebugToast.show(appContext, "Publish cancelled");
                            }
                        } else if (error instanceof FacebookOperationCanceledException) {
                            // User clicked the "x" button
                            DebugToast.show(appContext, "Publish cancelled");
                        } else {
                            // Generic, ex: network error
                            DebugToast.show(appContext, "Error posting story");
                        }

                        logOut();
                    }
                })
                .build();
        feedDialog.show();
    }

    /**
     * Disconnect from facebook
     */
    public void logOut() {
        Session session = Session.getActiveSession();
        if (!session.isClosed()) {
            session.closeAndClearTokenInformation();
        }
    }
}

正しく動作させるには？
別の解決策も受け入れられました
よろしくお願いします