calculateDistanceX(MotionEvent) method in intercept touch events handling

Question

I'm new to android and trying to learn intercept touch events handling using this documentation, but i do not understand that calculateDistanceX(MotionEvent) method at all, and the more I searched about it the less i found. I'm completely confused.

Could anyone please explain it to me?

Thanks in advance.

Well, apparently, I didn't understand I should read the comments! thanks anyway :)) — MamadTell, Nov 10 '15 at 10:47

score 5 · Accepted Answer · answered Nov 09 '15 at 17:16

5

It says that the method calculateDistanceX() is left as an exercise for a user. One solution would be to cache the first MotionEvent and then the distance would be mFirstMotionEvent.getX() - currentMotionEvent.getX()

answered Nov 09 '15 at 17:16

Charles Durham

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calculateDistanceX(MotionEvent) method in intercept touch events handling

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