Sign in with Apple ID 苹果登录 ios13+

【1】使用第三方登录而没有使用Apple登录时审核被拒邮件内容如下：

### Guideline 4.8 - Design - Sign in with Apple

We noticed that your app uses a third-party login service but does not offer Sign in with Apple.

**Next Steps**

To resolve this issue, please revise your app to offer Sign in with Apple as an equivalent login option.

**Resources**

To learn more, see the Sign in with Apple [Overview](https://developer.apple.com/sign-in-with-apple/).

【2】苹果登录实现步骤与注意事项
【注意】使用苹果登录首先需要在苹果开发者后台开启 App 的 Sign In with Apple 服务只有发布Appstore的应用才能使用苹果登录。企业版开发者账号不支持 Sign In with Apple （企业版开发者账号指的是用于企业内部分发App，不能用于发布 App Store 的账号，也就是价格为 299$ 的账号）

官方Demo https://developer.apple.com/documentation/authenticationservices/adding_the_sign_in_with_apple_flow_to_your_app

【图片指引】

appleid-001.png

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appleid-003.png

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appleid-005.png

appleid-006.png

appleid-007.png

appleid-008.png

【代码】

#import <AuthenticationServices/AuthenticationServices.h>
@interface LoginView ()<
ASAuthorizationControllerDelegate,
ASAuthorizationControllerPresentationContextProviding
>
@end
@implementation LoginView
#pragma mark - AppleIDLogin
- (void) setup {

    if (@available(iOS 13.0, *)) {

        /*
        // 创建一个 provider
        ASAuthorizationAppleIDProvider *appleIDProvider = [[ASAuthorizationAppleIDProvider alloc] init];
        UmUserModel *model = [UmUserModel getUmUserModel];
        if ( [AppleIDLogin isEqualToString:model.loginType] ) {

        }
        [appleIDProvider getCredentialStateForUserID:model.unionid completion:^(ASAuthorizationAppleIDProviderCredentialState credentialState, NSError * _Nullable error) {

          if ( credentialState == ASAuthorizationAppleIDProviderCredentialAuthorized ) {

          }
          else {

          }
        }];
        */

        ASAuthorizationAppleIDButton *signInButton = [ASAuthorizationAppleIDButton buttonWithType:ASAuthorizationAppleIDButtonTypeSignIn style:ASAuthorizationAppleIDButtonStyleBlack];
        signInButton.frame = self.view0.bounds;
        [self.view0 addSubview:signInButton];
        // 添加响应方法
        [signInButton addTarget:self action:@selector(signInButtonClicked:) forControlEvents:UIControlEventTouchUpInside];
    }
}

- (void) signInButtonClicked:(ASAuthorizationAppleIDButton *)signInButton  API_AVAILABLE(ios(13.0)){
    
    ASAuthorizationAppleIDProvider *appleIDProvider = [[ASAuthorizationAppleIDProvider alloc] init];
    ASAuthorizationAppleIDRequest *appleIDRequest = [appleIDProvider createRequest];    
    appleIDRequest.requestedScopes = @[ASAuthorizationScopeFullName, ASAuthorizationScopeEmail];// 要获取的内容
    
    // 登录使用的一种方式，后面单独讨论
//    ASAuthorizationPasswordProvider *passwordProvider = [ASAuthorizationPasswordProvider new];
//    ASAuthorizationPasswordRequest *passwordRequest = [passwordProvider createRequest];    
    
    // 系统提供的 Controller，必须使用，需要传入 requests 数组
    ASAuthorizationController *authController = [[ASAuthorizationController alloc] initWithAuthorizationRequests:@[appleIDRequest]];//, passwordRequest
    // 设置代理，接收登录成功/失败的回调
    authController.delegate = self;
    // 页面跳转相关的，通过一个代理方法传入一个 window

    authController.presentationContextProvider = self;
    // Controller 初始化期间，开始授权流程
    [authController performRequests];
}

#pragma mark - ASAuthorizationControllerDelegate
- (void)authorizationController:(ASAuthorizationController *)controller didCompleteWithError:(NSError *)error  API_AVAILABLE(ios(13.0)){
    // 登录失败
    NSLog(@"auth failed!, error:%@, code:%ld, description:%@", error, (long)error.code, error.description);
}

- (void)authorizationController:(ASAuthorizationController *)controller didCompleteWithAuthorization:(ASAuthorization *)authorization  API_AVAILABLE(ios(13.0)){
    // 登录成功    
    if ( [authorization.credential isKindOfClass:[ASAuthorizationAppleIDCredential class]] ) {
        
        ASAuthorizationAppleIDCredential *credential = (ASAuthorizationAppleIDCredential *)authorization.credential;
                
        // 还有其他的属性
        NSLog(@"appleid auth success!, %@", authorization.description);       
       // 登录后具体操作，如数据保存，APP自己的登录等
    }
}

#pragma mark - ASAuthorizationControllerPresentationContextProviding
- (ASPresentationAnchor)presentationAnchorForAuthorizationController:(ASAuthorizationController *)controller  API_AVAILABLE(ios(13.0)){
    // 返回一个 window，present 登录界面需要用到
    return [UIApplication sharedApplication].delegate.window;
}

#pragma mark AppleIDLogin end
@end