Passing data with CCNotficationCenter

问题

I am new to Cocos2d-X.

CCNotificationCenter::sharedNotificationCenter()->addObserver(
            this,
            callfuncO_selector(test::printSomething),
            "hello",
            NULL);

and the callback function is

void PingoScreen::printSomething(CCObject *pObject) {
    CCString * myData = (CCString*)pObject;
    CCLog("The data posted is %s",myData);
}

Now i want to send a CCString parameter via notification so that

CCNotificationCenter::sharedNotificationCenter()->postNotification("hello",
                ccs(notificationData));

How can i do this ? What do i need to change in the notification definition ?

回答1:

Register Notification

CCNotificationCenter::sharedNotificationCenter()->addObserver(this, callfuncO_selector(GameScene::doSomething), "eventNotification", NULL);

Remove Notification

CCNotificationCenter::sharedNotificationCenter()->removeObserver(this, "eventNotification");

Post Notification

CCNotificationCenter::sharedNotificationCenter()->postNotification("eventNotification", myString);

Callback method

void GameScene::doSomething(CCObject *pObject) {
    CCString *myString = (CCString*)pObject;

    // XXX: Do something
}

来源：https://stackoverflow.com/questions/20537329/passing-data-with-ccnotficationcenter