现在我正在通过 facebook 登录。为此,我使用的是 android sdk 3.0。在我的应用程序中,我必须获取用户的电子邮件 ID。我正在使用以下代码获取电子邮件 ID,但我无法获取。如果我做错了,你能给我任何建议吗?每次我要去别的地方。
loginButton = (LoginButton) findViewById(R.id.authButton);
    // for error on login
    loginButton.setOnErrorListener(new OnErrorListener() {
        public void onError(FacebookException error) {
            Log.i(TAG, "Error " + error.getMessage());
        }
    });
    // loginButton.setLoginBehavior(SessionLoginBehavior.SUPPRESS_SSO);
    // set permission list, Don't forget to add email
    loginButton.setReadPermissions(Arrays.asList("basic_info", "email"));
    // session state call back event
    loginButton.setSessionStatusCallback(new Session.StatusCallback() {
        @Override
        public void call(Session session, SessionState state,
                Exception exception) {
            if (session.isOpened()) {
                Log.i(TAG, "Access Token" + session.getAccessToken());
                Request.executeMeRequestAsync(session,
                        new Request.GraphUserCallback() {
                            @Override
                            public void onCompleted(GraphUser user,
                                    Response response) {
                                if (user != null) {
                                    Log.d(TAG, "User ID " + user.getId());
                                    Log.d(TAG,
                                            "Email "
                                                    + user.asMap().get(
                                                            "email"));
                                }
                            }
                        });
            } else {
                Log.d("session is not valid", ""
                        + Session.getActiveSession().getState());
            }
        }
    });