Contents

setActionQueue(_:action:)

Sets the action to perform on the specified dispatch queue when the control’s value changes.

Declaration

@nonobjc func setActionQueue(_ actionQueue: DispatchQueue, action: @escaping (Int) -> ())

Parameters

  • actionQueue:

    A dispatch queue on which to call the action.

  • action:

    The action to perform in response to changes to the control’s value.

Discussion

If the action modifies a property of the camera system, the specified dispatch queue must represent the camera system’s same exclusive execution context (see isSameExclusiveExecutionContext(other:)).