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

Question

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来提供身份验证信息.那么我可以使用GIDAuthentication它为驱动程序sdk构建GTMOAuth2Authentication吗？

手动分配accessToken值似乎不起作用(添加驱动器范围).

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 (e.g., 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. 在您AppDelegate(或其他一些可访问的地方),添加:

   var myAuth: GTMFetcherAuthorizationProtocol? = nil
   

4. 在signIn委托函数中(假设此处也设置了AppDelegate),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 
   }