How to use CCNotificationCenter

Hi, I see this class, but I don’t understand your functionality.
This class is similar to android Toast Class?

No.
You can refer to samples/TestCpp/ExtensionsTest/NotificationCenterTest/NotificationCenterTest.cpp|.h.
Of course, you can run the corresponding test case to see the effect.

I don’t know that have test for CCNotificationCenter, thanks