In my SwiftUI view below, I would like my alert to update with the countdown variable which controls whether or not the Proceed button is active & also shows up in the text of the alert itself.
The current implementation does not update the value of countdown - it always remains as 5.
struct RedemptionView: View { @Environment(\.dismiss) var dismiss @State private var showQRCodeScanner = false @State private var showPasscodeView = false @State private var billAmount: String = "" @State private var isShowingRedemptionStepView = false @State private var showAlert = false @State fileprivate var countdown: Int = 5 var allowsDelitePointCollection: Bool var voucherTitle: String var discountId: Int var body: some View { VStack { DismissButton() VStack(spacing: 16) { Text("Scan the QR code provided by the staff, or pass your phone to them to enter the staff code.") .font(.subheadline) .multilineTextAlignment(.center) .padding(.horizontal) .fixedSize(horizontal: false, vertical: true) Button(action: { if !billAmount.isEmpty { showAlert = true startCountdown() } else { showQRCodeScanner = true } }) { Text("Scan QR Code") .font(.headline) .padding() .frame(maxWidth: .infinity) .background(Color.blue) .foregroundColor(.white) .cornerRadius(10) } .padding(.horizontal) } .padding(.bottom) Spacer() } .onTapGesture { hideKeyboard() } .padding(.top, 20) .sheet(isPresented: $showQRCodeScanner) { QRCodeScannerView(discountId: discountId, billAmount: billAmount, discountTitle: voucherTitle, isPresented: $isShowingRedemptionStepView) } .sheet(isPresented: $showPasscodeView) { PasscodeView(billAmount: billAmount, discountId: discountId, discountTitle: voucherTitle, isPresented: $isShowingRedemptionStepView) } .onChange(of: isShowingRedemptionStepView) { oldValue, newValue in if !newValue && oldValue { dismiss() } } .alert("Verify Bill Amount - \(priceToStrFormat(price: (Int(billAmount) ?? 0) * 100, useComma: false))", isPresented: $showAlert) { Button("Proceed\(countdown > 0 ? " In \(countdown)s" : "")") { if countdown == 0 { showQRCodeScanner = true } }.disabled(countdown > 0) Button("Cancel", role: .cancel) { } } message: { Text("Show Phone to Staff to verify bill amount. Proceed in \(countdown) seconds") } } private func startCountdown() { Timer.scheduledTimer(withTimeInterval: 1.0, repeats: true) { timer in if countdown > 0 { countdown -= 1 } else { timer.invalidate() } } } } 
