Hello,
I think I found a bug in the SDL/Android port.
The onTouch() method is not handling the MotionEvent.ACTION_CANCEL case.
http://developer.android.com/reference/android/view/MotionEvent.html :
“A pointer id remains valid until the pointer eventually goes up
(indicated by ACTION_UP or ACTION_POINTER_UP) or when the gesture is
canceled (indicated by ACTION_CANCEL).”
When the Java side receives ACTION_CANCEL, it should (at least)
interpret it as SDL FINGER_UP events.
Otherwise :
- Missing events FINGER_UP
- very small memory leak, because some SDL_AddFinger() are never
released with a SDL_DelFinger() - SDL_GetNumTouchFingers() reports a wrong count
It’s not obvious to trigger the ACTION_CANCEL (needs to tap with 3+
finger on the tablet).
I can’t reproduced it with Nexus7 but it happens with HTC ONE.
reported + some patch here:
https://bugzilla.libsdl.org/show_bug.cgi?id=2558
Cheers,
Sylvain