ios - Facebook SDK [Firebase Ref.,Swift] 中缺少 FBSessionStateOpen

Question

我正在尝试连接 firebase 和 facebook 作为引用 https://www.firebase.com/docs/ios/guide/login/facebook.html#section-authenticating

FacebookSDK 3.21.1版本

这是我遇到的问题

state.value == FBSessionStateOpen.value 

FBSessionStateOpen 是未解析的标识符

我已经创建了 Bridge-Header 其中包含

#import <FacebookSDK/FacebookSDK.h> 

我看到在FacebookSDK.framework中已经在FBSession.h中包含了FBSessionStateOpen

typedef NS_ENUM(NSUInteger, FBSessionState) {
    ...
    /*! Open session state indicating user has logged in or a cached token is available */
    FBSessionStateOpen                      = 1 | FB_SESSIONSTATEOPENBIT,
    ...
};

完整代码 来自 firebase

let ref = Firebase(url: "https://<YOUR-FIREBASE>.firebaseio.com")
FBSession.openActiveSessionWithReadPermissions(["public_profile"], allowLoginUI: true,
     completionHandler: { session, state, error in

    if error != nil {
        println("Facebook login failed. Error \(error)")
    } else if state.value == FBSessionStateOpen.value {
        let accessToken = session.accessTokenData.accessToken
        ref.authWithOAuthProvider("facebook", token: accessToken,
            withCompletionBlock: { error, authData in

            if error != nil {
                println("Login failed. \(error)")
            } else {
                println("Logged in! \(authData)")
            }
        })
    }
}

Answer 1

我已尝试将语句更改为并且有效!

来自

state.value == FBSessionStateOpen.value 

到

state.hashValue == FBSessionState.Open.hashValue

虽然我不确定它是否应该是这样。