ASAuthorizationAppleIDButton

if (@available(iOS 13.0, *)) {
     
        ASAuthorizationAppleIDButton *button = [ASAuthorizationAppleIDButton buttonWithType:ASAuthorizationAppleIDButtonTypeSignIn style:ASAuthorizationAppleIDButtonStyleBlack];
        button.frame = CGRectMake(0, 0, 60, 60);
        button.layer.masksToBounds = YES;
        button.layer.cornerRadius = 30;
        [button addTarget:self
                   action:@selector(signInWithApple:)
         forControlEvents:UIControlEventTouchUpInside];
        button.center = self.view.center;
        [self.view addSubview:button];
        
    }

- (void)signInWithApple:(ASAuthorizationAppleIDButton *)sender API_AVAILABLE(ios(13.0)){
    JMLog(@"Apple Login Click");
    
    if (@available(iOS 13.0, *)) {
        //基于用户的Apple ID授权用户，生成用户授权请求的一种机制
        ASAuthorizationAppleIDProvider *appleIDProvider = [ASAuthorizationAppleIDProvider new];
        if (_userId.length != 0) {
            //快速登录
            [appleIDProvider getCredentialStateForUserID:_userId completion:^(ASAuthorizationAppleIDProviderCredentialState credentialState, NSError * _Nullable error) {
                
            }];
        }
        else {
            //授权请求AppleID
            ASAuthorizationAppleIDRequest *request = appleIDProvider.createRequest;
            [request setRequestedScopes:@[ASAuthorizationScopeFullName, ASAuthorizationScopeEmail]];
            //由ASAuthorizationAppleIDProvider创建的授权请求 管理授权请求的控制器
            ASAuthorizationController *controller = [[ASAuthorizationController alloc] initWithAuthorizationRequests:@[request]];
            //设置授权控制器通知授权请求的成功与失败的代理
            controller.delegate = self;
            //设置提供 展示上下文的代理，在这个上下文中 系统可以展示授权界面给用户
            controller.presentationContextProvider = self;
            //在控制器初始化期间启动授权流
            [controller performRequests];
        }
    }
    else {
        // Fallback on earlier versions
    }
}

- (void)authorizationController:(ASAuthorizationController *)controller didCompleteWithAuthorization:(ASAuthorization *)authorization API_AVAILABLE(ios(13.0))
{
    if ([authorization.credential isKindOfClass:[ASAuthorizationAppleIDCredential class]])       {
        ASAuthorizationAppleIDCredential *credential = authorization.credential;
        
        NSString *state = credential.state;
        NSString *userID = credential.user;
        NSPersonNameComponents *fullName = credential.fullName;
        NSString *email = credential.email;
        NSString *authorizationCode = [[NSString alloc] initWithData:credential.authorizationCode encoding:NSUTF8StringEncoding]; // refresh token
        NSString *identityToken = [[NSString alloc] initWithData:credential.identityToken encoding:NSUTF8StringEncoding]; // access token
        ASUserDetectionStatus realUserStatus = credential.realUserStatus;
        
        JMLog(@"state: %@", state);
        JMLog(@"userID: %@", userID);
        JMLog(@"fullName: %@", fullName);
        JMLog(@"email: %@", email);
        JMLog(@"authorizationCode: %@", authorizationCode);
        JMLog(@"identityToken: %@", identityToken);
        JMLog(@"realUserStatus: %@", @(realUserStatus));
    }
}

- (void)authorizationController:(ASAuthorizationController *)controller didCompleteWithError:(NSError *)error API_AVAILABLE(ios(13.0))
{
    NSString *errorMsg = nil;
    switch (error.code) {
        case ASAuthorizationErrorCanceled:
            errorMsg = @"用户取消了授权请求";
            break;
        case ASAuthorizationErrorFailed:
            errorMsg = @"授权请求失败";
            break;
        case ASAuthorizationErrorInvalidResponse:
            errorMsg = @"授权请求响应无效";
            break;
        case ASAuthorizationErrorNotHandled:
            errorMsg = @"未能处理授权请求";
            break;
        case ASAuthorizationErrorUnknown:
            errorMsg = @"授权请求失败未知原因";
            break;
    }
    JMLog(@"errorMsg:%@", errorMsg);
}