PSTCKPaymentCardTextField不在视图上显示

Question

试图将Paystack与我的应用程序集成。使用guide中描述的PSTCKPaymentCardTextField，但是当我运行应用程序时它在我的视图中不显示任何内容。

import UIKit
import Paystack


 class PaymentViewController: UIViewController, PSTCKPaymentCardTextFieldDelegate {

 let paymentTextField: PSTCKPaymentCardTextField = {
   let ptf = PSTCKPaymentCardTextField()
    return ptf
 }()

 func setupPaymentTextField() {
    let paymentFormWidth = self.view.frame.width - 30
    paymentTextField.frame = CGRect(x: 15, y: 15, width: paymentFormWidth, height: 44)
    paymentTextField.delegate = self
 }

 override func viewDidLoad() {
    super.viewDidLoad()
    view.backgroundColor = .white

    view.addSubview(paymentTextField)
    setupPaymentTextField()

  }

}

难道我做错了什么？请帮帮我。谢谢

注意：我是快速语言的新手

Answer 1

问题解决了！使用自动布局而不是使用paymentTextField.frame = CGRect(x: 15, y: 15, width: paymentFormWidth, height: 44)

func setupPaymentTextField() {
    paymentTextField.delegate = self

    paymentTextField.centerXAnchor.constraint(equalTo: view.centerXAnchor).isActive = true
    paymentTextField.centerYAnchor.constraint(equalTo: view.centerYAnchor).isActive = true
    paymentTextField.widthAnchor.constraint(equalTo: view.widthAnchor, constant: -30).isActive = true
    paymentTextField.heightAnchor.constraint(equalToConstant: 45).isActive = true
}