See Also: UITouch Members
This object encapsulates a touch or a finger movement on the screen.
UIViews by default only handle a single touch event at once. If you want your view to handle multiple touches, you must set the UIView.MultipleTouchEnabled to true.
iOS creates a T:UIKit.UIEvent object any time a finger touches the screen, moves or is removed from the screen. The UIKit.UIEvent encapsulates all of the touches that are taking place on the screen at this point, even those that do not belong to this view. In addition to the UIKit.UIEvent, there is an Foundation.NSSet containing UIKit.UITouch objects that represent the state of each finger on the screen for this particular view.