The rectangle, in the source view’s coordinate system, that responds to a 3D Touch by a user and remains visually sharp while surrounding content blurs.
- iOS 9.0+
- tvOS 9.0+
Use this property if you want to specify a preview indication area that is different than the bounds of the view in the
source property. Set this property’s value in your object’s
The default value of this property corresponds to the bounds of the view in the
For example, if your source view is a table view, you can set the
source property to the frame of the row under the user’s touch. The row then remains visually sharp when a user presses it, while surrounding content blurs, thereby indicating to the user that it is the row being touched that has a preview available.
You can change the value of this property at runtime.