如何更新徽章文字

Question

使用MIBadgeButton_Swift将徽章添加到我的购物车图标这里是我的代码

badgeButton.badgeString = "\(cart.count)"
badgeButton.badgeTextColor = .whiteColor()
badgeButton.badgeEdgeInsets = UIEdgeInsetsMake(7, 0, -7, 34)

但是当我将新物品添加到购物车时，徽章不会增加。它不会更新徽章 Demo 弹出后，购物车文字不会更新

更新

 func showAlertForRow(tt: String) {
    let alert = SCLAlertView()
    let txt = alert.addTextField("Quantity")
    txt.keyboardType = UIKeyboardType.NumberPad
    txt.text = "\(1)"
    alert.addButton("Add to cart") {
        let ff: Best!
        let indexPath = self.tableView?.indexPathForSelectedRow
        ff = self.best[indexPath!.row]

        let app = UIApplication.sharedApplication().delegate as! AppDelegate
        let context = app.managedObjectContext

        let entity = NSEntityDescription.entityForName("Cart", inManagedObjectContext: context)
        let cartt = Cart(entity: entity!, insertIntoManagedObjectContext: context)

        print()
        cartt.name = ff.name!

        cartt.price = Double(ff.price!)
        cartt.rest_id = "\(ff.rest_id)"
        cartt.longg = ff.longg
        cartt.latt = ff.latt
        cartt.item_id = "\(ff.item_id)"
        cartt.quantity = Int(txt.text!)
        cartt.restName = ff.restName
        cartt.cookTime = "\(ff.cookTime)"

        var lt = String(ff.latt)
        var lg = String(ff.longg)
        var urlo = "https://maps.googleapis.com/maps/api/distancematrix/json?origins=\(lt),\(lg)&destinations=\(LATITUDE!),\(LONGITUDE!)&mode=driving&language=pl-PLe"

        print(urlo)
        var url = NSURL(string: urlo)
        let session = NSURLSession.sharedSession()
        session.dataTaskWithURL(url!) {
            (data, response, error) in
            let jsonObj = JSON(data: data!)
            let yy = jsonObj["rows"][0]["elements"][0]["distance"]["value"].int
            var converted:Int?

            if yy <= 5000{
                converted = (yy! / 1000) * 80
            }else{
                converted = (yy! / 1000) * 65
            }

            print("CONVERTED IS \(converted!)")

            if converted < 400{
                converted = 400
            }

            cartt.delivery = converted

            print("TOTALAMT\(converted)")

            }.resume()



        if let imageUrl = ff.imageString{
            cartt.imageUrl = imageUrl
        }
        //img is from the outlet

        //save
        context.insertObject(cartt)

        do{
            try context.save()
            print(cartt.longg)
            print("saved")

        }catch{
            print("could not save ahaha")
        }
        self.navigationController?.popViewControllerAnimated(true)

    }
    dispatch_async(dispatch_get_main_queue()) {
        self.badgeButton.badgeString = "\(self.cart.count)"
        print("IT GOT HERE")
        self.updateBadge()
    }
    let imagBu = UIImage(named: "shopping_cart_loaded.png")
    alert.showSuccess("", subTitle: "Add \(tt) to cart", circleIconImage: imagBu, closeButtonTitle: "Close")
}