这是我第一次在大型项目中使用 PassKit 和 SwiftUI。我正在尝试实现 Apple Pay SwiftUI，但由于还没有本地方法可以做到这一点，我尝试将 PKPaymentAuthorizationViewController 包装在 UIViewControllerRepresentable 中，但我不确定我是否做得正确。
该视图显示正确，并且在单击它进行支付时似乎可以正常工作。我通过将视图绑定到 isPresentingApplePay 布尔值来控制显示窗口（见下文）。当窗口应该被关闭时，问题就会发生。点击cancel按钮不会关闭视图；有时它甚至不调用 paymentAuthorizationViewControllerDidFinish 委托函数。提交付款后也会发生同样的事情。有时会调用 didFinish 委托，但不会关闭视图。我尝试传递绑定变量 isPresentingApplePay 并将其从 didFinish 设置为false，但它没有做任何事情。让视图消失的唯一方法是点击苹果支付窗口之外的任何部分。
有谁知道我做错了什么？有什么我完全想念的吗？
通过将视图绑定在if statement
这是我的 PKPaymentAuthorizationViewController 包装器：
import Foundation
import PassKit
import SwiftUI
struct ApplePayController: UIViewControllerRepresentable {
@Environment(\.presentationMode) var presentationMode
@EnvironmentObject var userData: UserData
@Binding var purchase: Purchase
@Binding var isPresenting: Bool
let items: [PKPaymentSummaryItem]
func updateUIViewController(_ uiViewController: PKPaymentAuthorizationViewController, context: Context) {
}
typealias UIViewControllerType = PKPaymentAuthorizationViewController
func makeUIViewController(context: Context) -> PKPaymentAuthorizationViewController {
let applePayManager = ApplePayManager(items: items)
let apm = applePayManager.paymentViewController()!
apm.delegate = context.coordinator
return apm
}
func makeCoordinator() -> Coordinator {
Coordinator(self)
}
class Coordinator: NSObject, PKPaymentAuthorizationViewControllerDelegate {
var parent: ApplePayController
init(_ parent: ApplePayController) {
self.parent = parent
}
func paymentAuthorizationViewControllerDidFinish(_ controller: PKPaymentAuthorizationViewController) {
controller.dismiss(animated: true) {
self.parent.isPresenting = false
}
}
func paymentAuthorizationViewController(_ controller: PKPaymentAuthorizationViewController, didAuthorizePayment payment: PKPayment, handler completion: @escaping (PKPaymentAuthorizationResult) -> Void) {
print("did authorize payment")
}
func paymentAuthorizationViewControllerWillAuthorizePayment(_ controller: PKPaymentAuthorizationViewController) {
print("Will authorize payment")
}
}
class ApplePayManager: NSObject {
let currencyCode: String
let countryCode: String
let merchantID: String
let paymentNetworks: [PKPaymentNetwork]
let items: [PKPaymentSummaryItem]
init(items: [PKPaymentSummaryItem],
currencyCode: String = "USD",
countryCode: String = "US",
merchantID: String = "xxx.merchant.xxx",
paymentNetworks: [PKPaymentNetwork] = [PKPaymentNetwork.amex, PKPaymentNetwork.masterCard, PKPaymentNetwork.visa]) {
self.items = items
self.currencyCode = currencyCode
self.countryCode = countryCode
self.merchantID = merchantID
self.paymentNetworks = paymentNetworks
}
func paymentViewController() -> PKPaymentAuthorizationViewController? {
if PKPaymentAuthorizationViewController.canMakePayments(usingNetworks: paymentNetworks) {
let request = PKPaymentRequest()
request.currencyCode = self.currencyCode
request.countryCode = self.countryCode
request.supportedNetworks = paymentNetworks
request.merchantIdentifier = self.merchantID
request.paymentSummaryItems = items
request.merchantCapabilities = [.capabilityCredit, .capabilityDebit]
return PKPaymentAuthorizationViewController(paymentRequest: request)
}
return nil
}
}
}
这就是我在 UIView 中显示它的方式：
if isPresentingApplePay {
ApplePayController(purchase: self.$currentOrder.purchase, isPresenting: $isPresentingApplePay, items: self.createOrder(with: self.currentOrder.purchase)).environmentObject(self.userData)
}