ios - 如何在按下按钮后将 View 中的特定信息添加到警报消息？

Question

我正在尝试编写一个代码，当用户触摸“添加到购物车”按钮时，当前显示的信息将在用户触摸“查看订单”按钮时显示在警报消息中。我已经尝试过这个问题的答案( How to save local data in a Swift app? )，但我发现它对我不起作用，从那以后我就一直被困住了。

"VIEW ORDERS" button's alert screen (left side). Alert screen after adding another item to cart (right side)

编辑:这台计算机上没有 xcode，所以我只是用 Paint 制作了屏幕。

Answer 1

使用以下代码作为警报 View Controller :

let alertController = UIAlertController(title: "\n", message: nil, preferredStyle: UIAlertControllerStyle.ActionSheet)

    let margin:CGFloat = 8.0
    let rect = CGRectMake(margin, margin, alertController.view.bounds.size.width - margin * 4.0, 100.0)
    let customView = UITextView(frame: rect)
    customView.text = "OREDERTEXT\nOREDERTEXT"
    customView.backgroundColor = UIColor.clearColor()
    customView.font = UIFont(name: "Helvetica", size: 15)

    alertController.view.addSubview(customView)

    let somethingAction = UIAlertAction(title: "Ok", style: UIAlertActionStyle.Default, handler: {(alert: UIAlertAction!) in print("something")

        print(customView.text)

    })

    alertController.addAction(somethingAction)

    self.presentViewController(alertController, animated: true, completion:{})

希望这对您有帮助。