The MultiTouchGestureDetector Detects scaling, rotating and moving transformation gestures using the supplied MotionEvents. The OnMultiTouchGestureListener callback will notify users when a particular gesture event has occurred, besides, SimpleOnMultiTouchGestureListener is offered as a helper class that you can extend if you don’t care about all of the reported events. This class should only be used with MotionEvents reported via touch.
MultiTouchGestureDetector

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