Instance Method

previousLocation(in:)

Returns the previous location of the receiver in the coordinate system of the given view.

Declaration

func previousLocation(in view: UIView?) -> CGPoint

Parameters

view

The view object in whose coordinate system you want the touch located. A custom view that is handling the touch may specify self to get the touch location in its own coordinate system. Pass nil to get the touch location in the window’s coordinates.

Return Value

This method returns the previous location of a UITouch object in the coordinate system of the specified view. Because the touch object might have been forwarded to a view from another view, this method performs any necessary conversion of the touch location to the coordinate system of the specified view.

See Also

Getting the Location of a Touch

func location(in: UIView?)

Returns the current location of the receiver in the coordinate system of the given view.

var view: UIView?

The view to which touches are being delivered, if any.

var window: UIWindow?

The window in which the touch initially occurred.

var majorRadius: CGFloat

The radius (in points) of the touch.

var majorRadiusTolerance: CGFloat

The tolerance (in points) of the touch’s radius.

func preciseLocation(in: UIView?)

Returns a precise location for the touch, when available.

func precisePreviousLocation(in: UIView?)

Returns a precise previous location for the touch, when available.