谷歌签署了对成员“下标”的模棱两可的引用

Question

application:openURL:options: 应用委托的方法。 该方法应该调用GIDSignIn实例的handleURL方法， 这将正确处理您的应用程序收到的 URL 在身份验证过程结束时。

直接从 firebase 指南文档复制，但仍有错误。

func application(application: UIApplication, openURL url: NSURL, options: [String: AnyObject]) -> Bool {
    return GIDSignIn.sharedInstance().handleURL(url as URL!, sourceApplication: 
        options[UIApplicationOpenURLOptionsSourceApplicationKey]  //Error is here
        //Ambiguous reference to member 'subscript' error is shown.

        as? String, annotation: options[UIApplicationOpenURLOptionsAnnotationKey])
}

Answer 1

如果您将多个 URL 方案与 Google 登录一起使用，请像这样使用它：

func application(application: UIApplication,
                 openURL url: NSURL,
                 options: [UIApplicationOpenURLOptionsKey : Any] = [:]) -> Bool {

    return GIDSignIn.sharedInstance().handle(url as URL!,
                                             sourceApplication: options[UIApplicationOpenURLOptionsKey.sourceApplication] as! String!,
                                             annotation: options[UIApplicationOpenURLOptionsKey.annotation])

}

Answer 2

您有一些问题。在 Swift 3 中，委托方法应具有以下签名：

func application(_ app: UIApplication, open url: URL, options: [UIApplicationOpenURLOptionsKey : Any] = [:]) -> Bool

整个方法是：

func application(_ app: UIApplication, open url: URL, options: [UIApplicationOpenURLOptionsKey : Any] = [:]) -> Bool {
    return GIDSignIn.sharedInstance().handleURL(url, sourceApplication: options[UIApplicationOpenURLOptionsKey.sourceApplication] as? String, annotation: options[UIApplicationOpenURLOptionsKey.annotation])
}