我可以在 iOS 上使用来自 google 登录 sdk 的身份验证信息的 google drive sdk 吗? [英] Can I use google drive sdk with authentication info from google sign-in sdk on iOS?

问题描述

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

We already have a login module uses Google Sign-In sdk. Google Sign-In gives a GIDAuthentication object after login succeed.

现在我想使用 google drive sdk 访问用户的 google drive，它需要 GTMOAuth2Authentication 来提供身份验证信息.那么我可以使用 GIDAuthentication 为驱动 sdk 构建 GTMOAuth2Authentication 吗?

Now I want to access user's google drive with google drive sdk which needs a GTMOAuth2Authentication to provide authentication info. So can I use the GIDAuthentication to construct a GTMOAuth2Authentication for drive sdk?

手动分配 accessToken 值似乎不起作用(添加了驱动范围).

Manually assign the accessToken value seems not working(drive scope added).

推荐答案

可以！

使用以下步骤:

1. 按照以下说明添加 Google 登录的所有步骤:https://developers.google.com/identity/sign-in/ios/start-integrating.确保为您的项目启用 Google Drive API.

1. Follow all the steps to add Google SignIn as described in: https://developers.google.com/identity/sign-in/ios/start-integrating. Make sure you enable the Google Drive API for your project.

初始化登录对象时，别忘了添加 Google Drive API 作用域:

When initialising the sign-in object, don't forget to add the Google Drive API scope:

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
}

在您的 AppDelegate(或其他可访问的地方)中，添加:

In your AppDelegate (or some other accessible place), add:

var myAuth: GTMFetcherAuthorizationProtocol? = nil

在你的signIn委托函数中(假设这里也设置在AppDelegate中)，添加如下代码:

In you signIn delegate function (assuming here it is also set in AppDelegate), add the following code:

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
    }
}

最后，无论您在何处设置 GoogleServiceDrive，您也可以设置其授权者，只需设置:

Last, wherever you set your GoogleServiceDrive, you can also set its authoriser, simply by setting:

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

现在您可以使用 Google 提供的示例代码

Now you can use the example code by Google

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

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