Returns a description of the changes in each finger between the first and the last relevant TouchEvent in the list.
If the gesture is to be considered terminated, e.g. because there is "touchcancel" in the list, returns null.
null
Note that, deltaX/deltaY are the end X/Y coordinate minus the start X/Y coordinate. For natural scroll direction you should swap their signs.
deltaX
deltaY
If the change of x and y coordinate are both less than this, it is marked as not significant.
Returns a description of the changes in each finger between the first and the last relevant TouchEvent in the list.
If the gesture is to be considered terminated, e.g. because there is "touchcancel" in the list, returns
null.Note that,
deltaX/deltaYare the end X/Y coordinate minus the start X/Y coordinate. For natural scroll direction you should swap their signs.