The custom input accessory view to display when the receiver becomes the first responder.
Mac Catalyst 13.0+Beta
This property is typically used to attach an accessory view to the system-supplied keyboard that is presented for UITextField and UITextView objects.
The value of this read-only property is nil. If you want to attach custom controls to a system-supplied input view (such as the system keyboard) or to a custom input view (one you provide in the inputView property), redeclare this property as read-write in a UIResponder subclass. You can then use this property to manage a custom accessory view. When the receiver becomes the first responder, the responder infrastructure attaches the accessory view to the appropriate input view before displaying it.
Updates the custom input and accessory views when the object is the first responder.
This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.