In my issue ,I want to customize DefaultTrackableEventHandler Class. exactly when trackable image is founded some values in other classes must be changed . for that I try to modify the OnTrackingFound() function. I add these lines to that function.
GameManager gameManager = Singleton
in vuforia7 I don't have any problem and it works correctly. but when I upgrade vuforia to 8.1 either it dose not understand GameManager class or any other classes that I defined.
finally my question is that "how can I modify and customize OnTrackingFound() and OntrackingLost() Functions in vuforia 8.1"?
sorry I'm not good in English
I hope You understand my question