AVCaptureSessionInterruptionSystemPressureStateKey
A key to retrieve a state value that indicates the system pressure level and contributing factors that caused the interruption.
Declaration
let AVCaptureSessionInterruptionSystemPressureStateKey: StringDiscussion
If an interruption occurs and the value of AVCaptureSessionInterruptionReasonKey equals AVCaptureSession.InterruptionReason.videoDeviceNotAvailableDueToSystemPressure, the userInfo dictionary for the notification contains this key and a corresponding AVCaptureDevice.SystemPressureState value.