android - 为什么 Facebook 登录 session 返回授权异常？

Question

我的 Facebook session 处理有两个问题，

1) 如果用户点击接受权限，则会返回 Facebook 访问 token 无效，并显示消息“ session 与当前存储的 session 不匹配”

2)如果我在显示对话框时按主页按钮，我无法按登录按钮，但当我按后退按钮时会显示

执行流程是否正确？ (失败后我应该删除 session 吗？)

感谢您的帮助

public class Home extends Fragment implements LoginListener {
    private final static String TAG = "Home";
    public View rootView;
    public ImageView HomeBg;
    public ImageView buttonLoginLogout;
    public TextView chi;
    public TextView eng;
    public ColorStateList oldColor;
    public SharedPreferences prefs;
    public EasyTracker tracker = null;
    public SharedPreferences.Editor editor;
    public ArrayList<String> permission;
    public ProgressDialog pd;
    public Home ctx;

    //Facebook login
    private Session.StatusCallback statusCallback = new SessionStatusCallback();

    @Override
    public void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState); 
        ctx = this;
    }

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

        tracker = EasyTracker.getInstance(getActivity());

        permission = new ArrayList<String>();
        permission.add("email");

        prefs = getActivity().getSharedPreferences("userInfo", 0);
        editor = prefs.edit();

        rootView = inflater.inflate(R.layout.home, container, false);
        buttonLoginLogout = (ImageView) rootView.findViewById(R.id.home_connectFB);

        //Facebook login
        Settings.addLoggingBehavior(LoggingBehavior.INCLUDE_ACCESS_TOKENS);

        Session session = Session.getActiveSession();
        if (session == null) {
            if (savedInstanceState != null) {
                session = Session.restoreSession(getActivity(), null, statusCallback, savedInstanceState);
            }
            if (session == null) {
                session = new Session(getActivity());
            }
            Session.setActiveSession(session);
            if (session.getState().equals(SessionState.CREATED_TOKEN_LOADED)) {
                session.openForRead(new Session.OpenRequest(this).setPermissions(permission).setCallback(statusCallback));
            }
        }

       updateView();
       return rootView;
    }

    @Override
    public void onStart() {
        super.onStart();
        Session.getActiveSession().addCallback(statusCallback);
        tracker.set(Fields.SCREEN_NAME, "hk7app/CX/" + Utility.getLocale(getActivity()) + "/Landing Page");
        tracker.send(MapBuilder.createAppView().build());
    }

    @Override
    public void onStop() {
        super.onStop();

        if (pd != null)
            pd.dismiss();

        Session.getActiveSession().removeCallback(statusCallback);
        EasyTracker.getInstance(getActivity()).activityStop(getActivity());
    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        Session.getActiveSession().onActivityResult(getActivity(), requestCode, resultCode, data);
    }

    @Override
    public void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        Session session = Session.getActiveSession();
        Session.saveSession(session, outState);
    }

    @SuppressWarnings("deprecation")
    private void updateView() {
        Log.d(TAG,"updateView");
        final Session session = Session.getActiveSession();
        if (session.isOpened()) {
            Request.executeMeRequestAsync(session,
                new Request.GraphUserCallback() {
                    @Override
                    public void onCompleted(GraphUser user,Response response) {
                        // TODO Auto-generated method stub
                        if (user != null) {
                            if (!user.getId().equals(prefs.getString("fbId",""))) {
                                editor.putString("fbId", user.getId());
                                editor.putString("fName", user.getFirstName());
                                editor.putString("lName", user.getLastName());
                                editor.putString("email", user.asMap().get("email").toString());
                                editor.commit();
                            }
                            if (prefs.getString("memId","").equals("") || prefs.getString("token","").equals("") || !user.getId().equals(prefs.getString("fbId",""))){
                                pd = ProgressDialog.show(getActivity(), getActivity().getResources().getString(R.string.sys_info),getActivity().getResources().getString(R.string.loading));
                                new APIHandler(getActivity(),tracker,"login").execute(ctx,session.getAccessToken()); // my backend
                            } else {
                                onLoginComplete("","");
                            }
                        }
                    }
            });               
        } else {
            buttonLoginLogout.setImageResource(R.drawable.landing_btn_connect_facebook);
            buttonLoginLogout.setOnClickListener(new View.OnClickListener() {
                public void onClick(View view) { onClickLogin(); }
            });
        }
    }

    private void onClickLogin() {
        tracker.send(MapBuilder.createEvent("menu_click","Fbconnect","connectFB_" + Utility.getLocale(getActivity()),null).build());
        Session session = Session.getActiveSession();
        if (!session.isOpened() && !session.isClosed()) {
            session.openForRead(new Session.OpenRequest(this).setPermissions(permission).setCallback(statusCallback));
        } else {
            Session.openActiveSession(getActivity(), this, true, statusCallback);
        }
    }

    private class SessionStatusCallback implements Session.StatusCallback {
        @Override
        public void call(Session session, SessionState state, Exception exception) {
            Log.d(TAG,"SessionStatusCallback");
            Log.d(TAG,""+exception);
            if (exception instanceof FacebookAuthorizationException){
                new AlertDialog.Builder(getActivity())
                .setTitle(ctx.getResources().getString(R.string.sys_info))
                .setMessage(R.string.facebook_permission_missing)
                .setPositiveButton(ctx.getResources().getString(R.string.close), null)
                .show();
            } else if (exception == null) {
                updateView();
            }
        }
    }


    @Override
    public void onResume() {
        super.onResume();
        AppEventsLogger.activateApp(getActivity(),getResources().getString(R.string.app_id));
    }

    @Override
    public void onLoginComplete(String memberId, String token) {    
        if (pd != null)
            pd.dismiss();

        if (!memberId.equals("") && !token.equals("")) {
            editor.putString("memId", memberId);
            editor.putString("token", token);
            editor.commit();
        }

        buttonLoginLogout.setImageResource(R.drawable.landing_btn_take_a_selfie);
        buttonLoginLogout.setOnClickListener(new View.OnClickListener() {
            public void onClick(View view) {
                 tracker.send(MapBuilder.createEvent("menu_click","TakeSelfie","Selfie_now_" + Utility.getLocale(getActivity()),null).build());
                ((LandingPage)getActivity()).tabHost.setCurrentTab(2);
            }
        });
    }

    @Override
    public void onLoginFailure(String errorMsg) {
        if (pd != null)
            pd.dismiss();

        Toast.makeText(getActivity(), errorMsg, Toast.LENGTH_LONG).show();
    }

}

Answer 1

尝试使用内置的FacebookSDK登录按钮，让您轻松登录并获取accessToken

将此 XML 包含在您的布局中

 <com.facebook.widget.LoginButton
    android:id="@+id/authButton"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="center_horizontal"
    android:layout_marginTop="30dp"
    />

并关注此link