How to trigger a seque programmatically?

Question

I have a TableViewController which presents (push) a ViewController (ScannerViewController) with this code: Bar Code Scanner

There is the following method:

func captureOutput(_ captureOutput: AVCaptureOutput!, didOutputMetadataObjects metadataObjects: [Any]!, from connection: AVCaptureConnection!) {
    captureSession.stopRunning()

    if let metadataObject = metadataObjects.first {
        let readableObject = metadataObject as! AVMetadataMachineReadableCodeObject;

        AudioServicesPlaySystemSound(SystemSoundID(kSystemSoundID_Vibrate))
        found(code: readableObject.stringValue);
    }

    dismiss(animated: true)   
}

Instead of dismiss(animated: true) I'd like to trigger a seque. The method in the TableViewController is:

@IBAction func unwindWithSelectedCode(segue: UIStoryboardSegue) {

    if let scannerViewController = segue.source as? ScannerViewController,
        let selectedCode = scannerViewController.code {
        myCode = selectedCode
    }
}

Normally I have a button which I connect to ViewControllers Exit sign on the top of the VC in the storyboard and call the method above. But I have no button. So how can I call the seque method programmatically without a button?

Answer 1

try this

self.performSegue(withIdentifier: "unwindSegueIdentifier", sender: self)

replace unwindSegueIdentifier with your identifier