我在import Foundation
import UIKit
func setupHeader(vc: UIViewController) {
let headerFiller: UIView = {
let view = UIView()
view.translatesAutoresizingMaskIntoConstraints = false
view.backgroundColor = supaGray
return view
}()
let header: UIView = {
let view = UIView()
view.translatesAutoresizingMaskIntoConstraints = false
view.backgroundColor = supaGray
return view
}()
let logOutButton: UIButton = {
let button = UIButton()
button.translatesAutoresizingMaskIntoConstraints = false
button.setTitle("Log Out", for: .normal)
button.setTitleColor(.blue, for: .normal)
button.titleLabel?.adjustsFontSizeToFitWidth = true
button.titleLabel?.textAlignment = .left
button.addTarget(self, action: #selector(handleLogOutButton), for: .touchUpInside)
return button
}()
func handleLogOutButton() {
}
vc.view.addSubview(header)
header.topAnchor.constraint(equalTo: vc.view.safeAreaLayoutGuide.topAnchor).isActive = true
header.leftAnchor.constraint(equalTo: vc.view.leftAnchor).isActive = true
header.rightAnchor.constraint(equalTo: vc.view.rightAnchor).isActive = true
header.heightAnchor.constraint(equalToConstant: 40).isActive = true
header.addSubview(logOutButton)
logOutButton.centerYAnchor.constraint(equalTo: header.centerYAnchor, constant: -5).isActive = true
logOutButton.leftAnchor.constraint(equalTo: header.leftAnchor, constant: 7).isActive = true
logOutButton.widthAnchor.constraint(equalTo: header.widthAnchor, multiplier: 0.17).isActive = true
logOutButton.heightAnchor.constraint(equalToConstant: 40).isActive = true
vc.view.addSubview(headerFiller)
headerFiller.topAnchor.constraint(equalTo: vc.view.topAnchor).isActive = true
headerFiller.leftAnchor.constraint(equalTo: vc.view.leftAnchor).isActive = true
headerFiller.rightAnchor.constraint(equalTo: vc.view.rightAnchor).isActive = true
headerFiller.bottomAnchor.constraint(equalTo: header.topAnchor).isActive = true
}
中包含以下代码，并且在完成沙盒购买后，我确认它可以运行SKPaymentTransactionObserver。
.purchased我的func paymentQueue(_ queue: SKPaymentQueue,
updatedTransactions transactions: [SKPaymentTransaction]) {
for transaction in transactions {
switch transaction.transactionState {
case .purchasing, .deferred: break
case .purchased, .restored:
Settings.didPurchase = true
DispatchQueue.main.async {
tableView.reloadData()
}
SKPaymentQueue.default().finishTransaction(transaction)
case .failed: // other code here
}
}
}
的数据源包括以下功能：
UITableView在调试时，我确认在调用func numberOfSections(in tableView: UITableView) -> Int {
return Settings.didPurchase ? 3 : 4
}
之后会调用此函数，并在购买后返回tableView.reloadData()。但是，视图不会更新为包括额外的部分。仅当我关闭整个视图并在购买完成后重新加载它时，它才会更新，在这种情况下，它会触发另一个表视图重新加载，看起来应该是这样。
我的理论是，因为当我打电话给3时UITableView并不是顶层视图（Apple发出警告，说购买成功，这涵盖了它），所以它不会更新查看，认为它不可见。但是，这合理吗？无论哪种方式，如何修复我的代码，以便在用户完成购买后按预期方式更新视图？