我可以使用google drive sdk和iOS上的google登录sdk的身份validation信息吗？

我们已经有一个登录模块使用Google Sign-In sdk。 登录成功后，Google登录会提供GIDAuthentication对象。

现在我想使用google drive sdk访问用户的google驱动器，这需要GTMOAuth2Authentication来提供身份validation信息。 那么我可以使用GIDAuthentication为驱动器sdk构建GTMOAuth2Authentication吗？

手动分配accessToken值似乎不起作用（添加了驱动器范围）。

Answer 1

是的你可以！

使用以下步骤：

1. 按照以下步骤添加Google SignIn，按照以下步骤操作： https ： //developers.google.com/identity/sign-in/ios/start-integrating 。 确保为项目启用Google Drive API。

2. 初始化登录对象时，请不要忘记添加Google Drive API范围：

    func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool { // Initialize sign-in var configureError: NSError? GGLContext.sharedInstance().configureWithError(&configureError) assert(configureError == nil, "Error configuring Google services: \(configureError)") GIDSignIn.sharedInstance().delegate = self // Use here whatever auth scope you wish (eg, kGTLAuthScopeDriveReadonly, // kGTLAuthScopeDriveMetadata, etc..) // You can obviously append more scopes to allow access to more services, // other than Google Drive. GIDSignIn.sharedInstance().scopes.append(kGTLAuthScopeDrive) return true } 

3. 在AppDelegate （或其他一些可访问的地方）中，添加：

    var myAuth: GTMFetcherAuthorizationProtocol? = nil 

4. 在你signIn委托函数（假设这里它也在AppDelegate设置），添加以下代码：

    func signIn(signIn: GIDSignIn!, didSignInForUser user: GIDGoogleUser!, withError error: NSError!) { if (error == nil) { // Logged into google services successfully! // Save relevant details from user.authentication to refresh the token when needed. // Set GTMOAuth2Authentication authoriser for your Google Drive service myAuth = user.authentication.fetcherAuthorizer() } else { // Error signing into Google services } } 

5. 最后，无论您在何处设置GoogleServiceDrive，您都可以设置其授权人，只需设置：

    let service = GTLServiceDrive() service.authorizer = (UIApplication.sharedApplication().delegate as! AppDelegate).myAuth 

6. 现在您可以使用Google的示例代码

    if let authorizer = service.authorizer, canAuth = authorizer.canAuthorize where canAuth { // service is authorised and can be used for queries } else { // service is not authorised } 

Answer 2

 / Creates the auth controller for authorizing access to Google Drive. - (GTMOAuth2ViewControllerTouch *)createAuthController { GTMOAuth2ViewControllerTouch *authController; authController = [[GTMOAuth2ViewControllerTouch alloc] initWithScope:@"https://www.googleapis.com/auth/drive" clientID:kClientID clientSecret:kClientSecret keychainItemName:kKeychainItemName delegate:self finishedSelector:@selector(viewController:finishedWithAuth:error:)]; return authController; } // Handle completion of the authorization process, and updates the Drive service // with the new credentials. - (void)viewController:(GTMOAuth2ViewControllerTouch *)viewController finishedWithAuth:(GTMOAuth2Authentication *)authResult error:(NSError *)error { if (error != nil) { [self showAlert:@"Authentication Error" message:error.localizedDescription]; self.driveService.authorizer = nil; } else { self.driveService.authorizer = authResult; [self.navigationController dismissViewControllerAnimated:YES completion:nil]; } }-(void)loadDriveFiles { NSMutableArray *driveFiles = [[NSMutableArray alloc] init]; NSMutableArray *downloadFiles = [[NSMutableArray alloc] init]; GTLQueryDrive *query = [GTLQueryDrive queryForFilesList]; query.q = [NSString stringWithFormat:@"'%@' IN parents", @"root"]; [self.driveService executeQuery:query completionHandler:^(GTLServiceTicket *ticket, GTLDriveFileList *files, NSError *error) { if (error == nil) { for(id key in files.items) { NSString *titleStr = [key valueForKey:@"title"]; [driveFiles addObject:titleStr]; NSString *downloadStr = [key valueForKey:@"downloadUrl"]; [downloadFiles addObject:downloadStr]; } UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil]; FilesViewController *filesView = (FilesViewController *)[storyboard instantiateViewControllerWithIdentifier:@"filesView"]; [filesView initwithName:driveFiles anddownload:downloadFiles]; [self.navigationController pushViewController:filesView animated:YES]; } else { NSLog(@"An error occurred: %@", error); } }]; }