iOS-蘋果登陸授權（AppleID SignIn）

why do it

如果你的App中包含或涉及到第三方登錄（例如：QQ登陸、微信登陸等），就必須接入蘋果登陸，如果不適配蘋果推出的Sign In With Apple審核將會被拒絕。

what is Sign In With Apple

其實和平時的一些第三方登陸一樣，通過授權，可以拿到用戶名，郵箱地址，用戶ID等信息，接入 Sign In With Apple 後， 應用程式或網站中顯示“ 通過Apple登錄”按鈕，意味著可以使用他們已有的Apple ID進行點擊或登錄，而無需填寫表格，驗證電子郵件地址和選擇密碼等操作；提供了一種新的，更私密的方式登陸。

接入 Sign In With Apple

一、首先手機必須是iOS 13（包含iOS 13）以上的iOS系統

二、項目 Bundle ID（Bundle identifier）勾選 Sign In With Apple 功能，然後保存

三、Xcode 配置 Singing & Capabilities

四、添加 AuthenticationServices.framework 庫

五、代碼集成

引入頭文件 #import <AuthenticationServices/AuthenticationServices.h>

添加代理 <ASAuthorizationControllerDelegate, ASAuthorizationControllerPresentationContextProviding>

添加“ 通過Apple登錄”按鈕 ，必須用系統的按鈕樣式，在iOS 13中提供了此按鈕樣式的創建方法，

if (@available(iOS 13.0, *)) {
     ASAuthorizationAppleIDButton *abtn = [ASAuthorizationAppleIDButton
                                           buttonWithType:ASAuthorizationAppleIDButtonTypeSignIn
                                           style:ASAuthorizationAppleIDButtonStyleBlack];
     [abtn addTarget:self action:@selector(signInWithApple) forControlEvents:UIControlEventTouchUpInside];
     //  圓角設置
     //  abtn.cornerRadius = 0;
     abtn.frame = CGRectMake((ScreenWidth - 200)/2, (ScreenHeight - 100)/2, 200, 40);
     [self.view addSubview:abtn];
 }

ASAuthorizationAppleIDButtonType

typedef NS_ENUM(NSInteger, ASAuthorizationAppleIDButtonType) {
    ASAuthorizationAppleIDButtonTypeSignIn,   /// 通過Apple登錄
    ASAuthorizationAppleIDButtonTypeContinue, /// 通過Apple繼續
    ASAuthorizationAppleIDButtonTypeSignUp ,  /// 通過Apple註冊
    ASAuthorizationAppleIDButtonTypeDefault = ASAuthorizationAppleIDButtonTypeSignIn,  /// 通過Apple登錄
}

ASAuthorizationAppleIDButtonStyle

typedef NS_ENUM(NSInteger, ASAuthorizationAppleIDButtonStyle) {
    ASAuthorizationAppleIDButtonStyleWhite,        ///白色背景黑色字體樣式，無邊框
    ASAuthorizationAppleIDButtonStyleWhiteOutline,  ///白色背景黑色字體樣式，有黑邊框
    ASAuthorizationAppleIDButtonStyleBlack,         ///黑色背景白色字體樣式，無邊框
}

ASAuthorizationAppleIDButtonStyleWhite（深色背景下使用）

ASAuthorizationAppleIDButtonStyleWhiteOutline（淺色背景下使用）

ASAuthorizationAppleIDButtonStyleBlack（淺色背景下使用）

點擊“ 通過Apple登錄”按鈕執行方法

 if (@available(iOS 13.0, *)) {
     ASAuthorizationAppleIDProvider *provider = [[ASAuthorizationAppleIDProvider alloc] init];
     ASAuthorizationAppleIDRequest *request = [provider createRequest];
     request.requestedScopes = @[ASAuthorizationScopeFullName, ASAuthorizationScopeEmail];
     ASAuthorizationController *vc = [[ASAuthorizationController alloc] initWithAuthorizationRequests:@[request]];
     vc.delegate = self;
     vc.presentationContextProvider = self;
     [vc performRequests];
 }

授權的代理方法

#pragma mark - ASAuthorizationControllerDelegate

- (void)authorizationController:(ASAuthorizationController *)controller didCompleteWithError:(NSError *)error API_AVAILABLE(ios(13.0)) {
    NSString *errorMsg = nil;
    switch (error.code) {
        case ASAuthorizationErrorCanceled:
            errorMsg = @"用戶取消了授權請求";
            break;
        case ASAuthorizationErrorFailed:
            errorMsg = @"授權請求失敗";
            break;
        case ASAuthorizationErrorInvalidResponse:
            errorMsg = @"授權請求響應無效";
            break;
        case ASAuthorizationErrorNotHandled:
            errorMsg = @"未能處理授權請求";
            break;
        case ASAuthorizationErrorUnknown:
            errorMsg = @"授權請求失敗未知原因";
            break;
    }
    NSLog(@"%@", errorMsg);
}

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

#pragma mark - ASAuthorizationControllerPresentationContextProviding
- (ASPresentationAnchor)presentationAnchorForAuthorizationController:(ASAuthorizationController *)controller API_AVAILABLE(ios(13.0)) {
    return [UIApplication sharedApplication].keyWindow;
}
- (NSString *)documentPath{
    NSString *documentPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
    return documentPath;
}

運行效果