swift中的PTKView子視圖

Question

我試圖在swift中實現PTKView子視圖中的Stripe授權卡。 我得到的錯誤：

reason: 'Can't add self as subview' 

這是我在迅速

import UIKit 
class PaymentViewController: UIViewController , PTKViewDelegate { 

    override func viewDidLoad() { 
     super.viewDidLoad() 
     var PaymentView : PTKView 
     var view : PTKView = PTKView(frame: CGRectMake(15,20,290,55)) 

     PaymentView = view 
     PaymentView.delegate = self; 
     view.addSubview(PaymentView) 

     } 

Answer 1

我加入self.view.addSubview（PaymentView） 代碼，它的伎倆