usingIt.swift

class ViewController: UIViewController {
    @IBOutlet var printerConnectionStatus: UILabel!
    var printManager = PrintManager.sharedInstance
    override func viewDidLoad() {
        super.viewDidLoad()
        printManager.connectionDelegate = self
        if printManager.isConnected {
            printerConnectionStatus.text = “Connected”
        } else {
            printerConnectionStatus.text = “Not Connected”
        }
    }
    @IBAction func printTestLabel(_ sender: Any) {
        printManager.printBarcode(for: “This is a test”)
    }
}
extension ViewController: EAAccessoryManagerConnectionStatusDelegate {
    func changeLabelStatus() {
        if printManager.isConnected {
            printerConnectionStatus.text = “Connected”
        } else {
            printerConnectionStatus.text = “Not Connected”
        }
    }
}