readinessCoordinator(_:captureReadinessDidChange:)
Tells the delegate that the capture readiness state of a photo output changed.
Declaration
optional func readinessCoordinator(_ coordinator: AVCapturePhotoOutputReadinessCoordinator, captureReadinessDidChange captureReadiness: AVCapturePhotoOutput.CaptureReadiness)Parameters
- coordinator:
The delegate’s coordinator object.
- captureReadiness:
An updated capture readiness value.
Discussion
The system always performs this call on the main queue, so you can use it to update your user interface’s shutter button availability and appearance.