iOS:使用Facebook和谷歌,Google Plus登录

Question

早上好,

我正在尝试实施Facebook登录(工作正常)以及同一视图中的google plus登录.我正在关注官方网站(谷歌)的指南,但Facebook按钮和谷歌加号按钮之间存在问题:

Facebook告诉我要输入以下代码:

-(BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation{

    return [FBAppCall handleOpenURL:url
                  sourceApplication:sourceApplication];
}

Google还告诉我要做以下事情:

- (BOOL)application: (UIApplication *)application
            openURL: (NSURL *)url
  sourceApplication: (NSString *)sourceApplication
         annotation: (id)annotation {
    return [GPPURLHandler handleURL:url
                  sourceApplication:sourceApplication
                         annotation:annotation];
}

并且我不能使用相同的名称具有相同的功能,并且我无法将一个功能集成到另一个中.这就是为什么我需要你的帮助,因为我不知道如何在这些指导方针之间处理这个问题.

提前致谢.

Answer 1

在返回之前,您必须检查[url scheme].示例代码如下.

-(BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation 
{ 
    NSLog("%@", [url scheme]); 

    if([[url scheme] isEqualToString:FACEBOOK_SCHEME]) 
    {  

        return [FBAppCall handleOpenURL:url sourceApplication:sourceApplication];

    }
    else if([[url scheme] isEqualToString:GOOGLE_PLUS_SCHEME]) 
    {  

        return [GPPURLHandler handleURL:url sourceApplication:sourceApplication annotation:annotation]; 

    }
}

希望它能解决你的问题..

Answer 2

这是Swift中的版本.

首先,您应该了解如何查看Google和Facebook返回网址之间的区别.检测算法是:

1. Facebook网址格式:fb1106884526040279://authorize/...带有fb1106884526040279您的应用ID.所以你只需要检查这个url是否以你的app id开头,是否等于authorize(字符串后面//和第一个/)

2. 谷歌网址格式:com.googleusercontent.apps.803921065829-m34o26vcj57oirk1oa8pqve5o22qdihn所以你只需要检查这个网址是否以com.googleusercontent.apps.

底座上面的解释,我已经泛化为GoogleAuth和FacebookAuthutils的类的一些小方法,如注销,查询登录...

这是 Google Authentication Utils

import Google

class GoogleAuth {

    static func getInstance() -> GIDSignIn {
        return GIDSignIn.sharedInstance()
    }

    static func isLogin() -> Bool {
        return getInstance().hasAuthInKeychain()
    }

    static func signOut() {
        getInstance().signOut()
    }

    static func isValidatedWithUrl(url: NSURL) -> Bool {
        return url.scheme.hasPrefix(NSBundle.mainBundle().bundleIdentifier!) || url.scheme.hasPrefix("com.googleusercontent.apps.")
    }
}

其次是 Facebook Authentication Utils

import FBSDKLoginKit

class FacebookAuth {
    static func isLogin() -> Bool {
       return FBSDKAccessToken.currentAccessToken() != nil
    }

    static func signOut() {
       FBSDKLoginManager().logOut()
    }

    static func isValidatedWithUrl(url: NSURL) -> Bool {
        return url.scheme.hasPrefix("fb\(FBSDKSettings.appID())") && url.host == "authorize"
    }
}

这是主要部分.在AppDelegate,您调用isValidateWithUrl方法来检查此网址是来自Google还是Facebook.

func application(application: UIApplication, openURL url: NSURL, options: [String: AnyObject]) -> Bool {
        print("step 2 of OAuth2. Url: \(url)")

        // url from google
        if GoogleAuth.isValidatedWithUrl(url) {
            return GIDSignIn.sharedInstance().handleURL(
                    url,
                    sourceApplication: options[UIApplicationOpenURLOptionsSourceApplicationKey] as? String,
                    annotation: options[UIApplicationOpenURLOptionsAnnotationKey])
        }
        // url from facebook
         else if FacebookAuth.isValidatedWithUrl(url) {
             return FBSDKApplicationDelegate.sharedInstance().application(application,
                    openURL: url,
                    sourceApplication: options[UIApplicationOpenURLOptionsSourceApplicationKey] as! String,
                    annotation: options [UIApplicationOpenURLOptionsAnnotationKey])
        }
        // application hasn't supported this url yet
        else {
              return false
        }
    }

希望这有帮助:)