Returns the location of the touch that started the interaction.
- iOS 10.0+
- Mac Catalyst 13.0+
The coordinate space in which the touch location should be returned
CGPoint that represents the current location of the touch, translated into the requested coordinate space.
Use this method to establish the current location of the touch that triggered the preview interaction.
When the preview interaction is not running, calling this method returns an invalid point. You must therefore only call this method in response to one of the delegate callbacks specified in