Scanner

[MichealSBingham]

1. Show some type of loading indicator while scanner is scanning.

2. // DELETE THIS LINE OF CODE WHEN THERE IS AN ERROR scanner.startScan()

[MichealSBingham]

    scanner.prepareScan(self.view){ (swapLink) in

        self.nameLabel.isHidden = true
        self.bioLabel.isHidden = true
        self.verifiedIcon.isHidden = true
        self.profilePic.isHidden = true
        self.animateInSwapView()
        self.loadingSymbol = loadingOverlay.showLoadingSymbol(view: self.view, shouldCenter: true)

         self.view.addSubview(self.loadingSymbol!)
 ///  ..........  continue other stuff

   SwapUser().swap(with: username, authorizeOnViewController: self, completion: { (error, user) in

            DispatchQueue.main.async {

                self.loadingSymbol?.isHidden = true
              ///  ... .. continue other stuff

// add this too

               func showLoadingSymbol(view: UIView, shouldCenter: Bool = false) -> UIImageView {

    let image = UIImage(named: "LoadingSymbol")
    let loadingSymbol = UIImageView(image: image!)
//    loadingSymbol.frame = CGRect(x: 171, y: 318, width: 35, height: 35)

    if shouldCenter{

        loadingSymbol.center = (view.superview?.center)!

    } else {

         loadingSymbol.frame = CGRect(x: view.frame.size.width/2-20, y: view.frame.size.height/2, width: 35, height: 35)
    }