UserSettingsFragment.java 文件源码

private void fetchUserInfo() {
    final Session currentSession = getSession();
    if (currentSession != null && currentSession.isOpened()) {
        if (currentSession != userInfoSession) {
            Request request = Request.newMeRequest(currentSession, new Request.GraphUserCallback() {
                @Override
                public void onCompleted(GraphUser me, Response response) {
                    if (currentSession == getSession()) {
                        user = me;
                        updateUI();
                    }
                    if (response.getError() != null) {
                        loginButton.handleError(response.getError().getException());
                    }
                }
            });
            Bundle parameters = new Bundle();
            parameters.putString(FIELDS, REQUEST_FIELDS);
            request.setParameters(parameters);
            Request.executeBatchAsync(request);
            userInfoSession = currentSession;
        }
    } else {
        user = null;
    }
}