Question

我正在尝试将Facebook整合到我的Android应用中。使用Facebook登录按钮，我尝试登录。当我第一次安装应用程序时，它工作正常并成功登录。当我使用该按钮注销，然后再次尝试登录时，它会显示权限对话框，但SessionState返回状态已关闭。有什么建议？这是我的代码

    public class LoginActivity extends FragmentActivity{

    //  private Login login;
        private boolean isResumed = false;
        private BirthDayComp app;
        private int Login=0;
        private int LogOut=1;
    private int Count=LogOut+1;
    private boolean loged= false;
    private Fragment[] fragments = new Fragment[Count];
     private UiLifecycleHelper uiHelper;
        private Session.StatusCallback callback = new Session.StatusCallback() {
            @Override
            public void call(Session session, SessionState state, Exception exception) {
                onSessionStateChange(session, state, exception);
            }
        };
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.login_fragment);
        uiHelper = new UiLifecycleHelper(this, callback);
            uiHelper.onCreate(savedInstanceState);

            FragmentManager fm = getSupportFragmentManager();
            fragments[Login]=fm.findFragmentById(R.id.loginfb);
            fragments[LogOut]=fm.findFragmentById(R.id.logoutfb);
            FragmentTransaction transaction = fm.beginTransaction();
            transaction.commit();
        /*if (savedInstanceState == null) {
            login = new Login();
            getSupportFragmentManager()
            .beginTransaction()
            .add(android.R.id.content, login)
            .commit();
        } else {
            login = (Login) getSupportFragmentManager()
                    .findFragmentById(android.R.id.content);
        }*/
    }


     @Override
        public void onResume() {
            super.onResume();
            uiHelper.onResume();
            isResumed = true;
        }

        @Override
        public void onPause() {
            super.onPause();
            uiHelper.onPause();
           /* Session session = Session.getActiveSession();
            session.removeCallback(callback);*/
            isResumed = false;
        }

        @Override
        public void onActivityResult(int requestCode, int resultCode, Intent data) {
            super.onActivityResult(requestCode, resultCode, data);
           // uiHelper.onActivityResult(requestCode, resultCode, data);
          //  super.onActivityResult(requestCode, resultCode, data);
            Session session = Session.getActiveSession();
            int sanitizedRequestCode = requestCode % 0x10000;
            session.onActivityResult(this, sanitizedRequestCode, resultCode, data);
        }

        @Override
        public void onDestroy() {
            super.onDestroy();
            uiHelper.onDestroy();
        }

        @Override
        protected void onSaveInstanceState(Bundle outState) {
            super.onSaveInstanceState(outState);
            uiHelper.onSaveInstanceState(outState);
        }

        @Override
        protected void onResumeFragments() {
            super.onResumeFragments();
            Session session = Session.getActiveSession();

            if (session != null && session.isOpened()) {
                // if the session is already open, try to show the selection fragment
                /*if(app.getFb()!=true){
                    app.setFb(true);
                }*/

                showFragment(Login, false);
            } else {
                // otherwise present the splash screen and ask the user to login.
                //app.setFb(false);
                showFragment(Login, false);
            }
        }

        private void onSessionStateChange(Session session, SessionState state, Exception exception) {
            if (isResumed) {
                FragmentManager manager = getSupportFragmentManager();
                int backStackSize = manager.getBackStackEntryCount();
                for (int i = 0; i < backStackSize; i++) {
                    manager.popBackStack();
                }
                // check for the OPENED state instead of session.isOpened() since for the
                // OPENED_TOKEN_UPDATED state, the selection fragment should already be showing.
                session=Session.getActiveSession();

                state= session.getState();
                if (state.equals(SessionState.OPENED)) {
                    this.loged=true;
                    showFragment(Login, false);

                } else if (state.isClosed()) {
                    this.loged=false;
                    System.gc();
                    //session.closeAndClearTokenInformation();
                   // showFragment(Login, false);
                }
            }
        }

        private void showFragment(int fragmentIndex, boolean addToBackStack) {

            FragmentManager fm = getSupportFragmentManager();
            FragmentTransaction transaction = fm.beginTransaction();
            for (int i = 0; i < fragments.length; i++) {
                if (i == fragmentIndex) {
                    transaction.show(fragments[i]);
                } else {
                    transaction.hide(fragments[i]);
                }
            }
            if (addToBackStack) {
                transaction.addToBackStack(null);
            }
            transaction.commit();
        }




}

Answer 1

状态对我来说没问题。我根据需要打开和关闭状态。

Facebook 3.0 Android第二次登录尝试返回“会话状态关闭”

1 个答案: