[英]How to return data from firebase cloud function and return async response?
[英]SwiftUI return Bool from authorizationController async
我如何從使用 authorizationController 的 apple function 登錄中返回 Bool? 我一直在看 withCheckedThrowingContinuation 但沒有運氣。 我還看到了一些使用完成處理程序的示例,但我想使用異步。
func signInWithApple(withState state: SignInState) async -> Bool {
let request = signInWithAppleRequest(withState: state)
let authorizationController = ASAuthorizationController(authorizationRequests: [request])
authorizationController.delegate = self
authorizationController.performRequests()
}
func authorizationController(controller: ASAuthorizationController, didCompleteWithAuthorization authorization: ASAuthorization) {
//...
let credential = OAuthProvider.credential(withProviderID: "apple.com", idToken: idTokenString, rawNonce: nonce)
switch state {
case .signIn:
Task {
authenticationState = .authenticating
do {
let result = try await Auth.auth().signIn(with: credential)
if result.additionalUserInfo?.isNewUser == true {
self.isNewUser = true
}
return true
} catch {
self.authenticationState = .unauthenticated
print(error.localizedDescription)
return false
}
}
case .reauth:
Task {
if let user = Auth.auth().currentUser {
do {
try await user.reauthenticate(with: credential)
return true
} catch {
print(error.localizedDescription)
return false
}
}
}
}
}
}
我沒有你所有的類型,所以這里有一個至少可以編譯的延續的簡單例子。
class 必須繼承自NSObject
並采用ASAuthorizationControllerDelegate
。
延續設置在執行請求的同一 scope 中。
最重要的規則是: continuation 必須恰好恢復一次
import AuthenticationServices
class Authorization: NSObject, ASAuthorizationControllerDelegate {
private var continuation : CheckedContinuation<ASAuthorization,Error>?
func signInWithApple() async throws -> ASAuthorization {
return try await withCheckedThrowingContinuation { continuation in
self.continuation = continuation
let appleIDProvider = ASAuthorizationAppleIDProvider()
let request = appleIDProvider.createRequest()
request.requestedScopes = [.fullName, .email]
let authorizationController = ASAuthorizationController(authorizationRequests: [request])
authorizationController.delegate = self
authorizationController.performRequests()
}
}
func authorizationController(controller: ASAuthorizationController, didCompleteWithAuthorization authorization: ASAuthorization) {
continuation?.resume(returning: authorization)
}
func authorizationController(controller: ASAuthorizationController, didCompleteWithError error: Error) {
continuation?.resume(throwing: error)
}
}
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