SwiftUI-Firebase，登录苹果，自定义按钮

Question

我想用自己的设计创建自己的SignInWithAppleButton，当然要遵循指导原则。

我在将startSignInWithAppleFlow函数从Swift转换为SwiftUI时遇到问题。

struct ContentView: View {

var body: some View {
...
AuthButton(title: "Connect with Apple", iconName: "appleIcon") {
authViewModel.signInWithApple()
}
...
}
}
struct AuthButton: View {
let title: String
let iconName: String
let action: () -> Void
var body: some View {
Button {
action()
} label: {
RoundedRectangle(cornerRadius: 16)
.fill(.clear)
.frame(height: 80)
.overlay(
Text(title)
.font(.regular16)
.foregroundColor(.black)
)
.overlay(
HStack {
HorizontalSpacer(width: 32)
Image(iconName)
.resizable()
.frame(width: 30, height: 30, alignment: .center)
Spacer()
}
)
}
.buttonStyle(AuthButtonStyle())
}
}
class AuthenticationViewModel: ObservableObject {
func signInWithApple() {
Unclear what should be here!
}
private func randomNonceString(length: Int = 32) -> String {
precondition(length > 0)
let charset: [Character] =
Array("0123456789ABCDEFGHIJKLMNOPQRSTUVXYZabcdefghijklmnopqrstuvwxyz-._")
var result = ""
var remainingLength = length
while remainingLength > 0 {
let randoms: [UInt8] = (0 ..< 16).map { _ in
var random: UInt8 = 0
let errorCode = SecRandomCopyBytes(kSecRandomDefault, 1, &random)
if errorCode != errSecSuccess {
fatalError(
"Unable to generate nonce. SecRandomCopyBytes failed with OSStatus (errorCode)"
)
}
return random
}
randoms.forEach { random in
if remainingLength == 0 {
return
}
if random < charset.count {
result.append(charset[Int(random)])
remainingLength -= 1
}
}
}
return result
}
private func sha256(_ input: String) -> String {
let inputData = Data(input.utf8)
let hashedData = SHA256.hash(data: inputData)
let hashString = hashedData.compactMap {
String(format: "%02x", $0)
}.joined()
return hashString
}
}

Answer 1

看起来您正处于文档的第2步。

您的功能如下所示：

func signInWithApple() {
let nonce = randomNonceString()
currentNonce = nonce
let appleIDProvider = ASAuthorizationAppleIDProvider()
let request = appleIDProvider.createRequest()
request.requestedScopes = [.fullName, .email]
request.nonce = sha256(nonce)
let authorizationController = ASAuthorizationController(authorizationRequests: [request])
authorizationController.delegate = self
authorizationController.performRequests()
}