Swift / Firebase数据库无效令牌错误 [英] Swift/Firebase Database invalid token error

问题描述

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每次尝试启动一个新的项目，我都得到了这个，除了一次 - 但我已经放弃现在正在开始一个新的项目。读范读读范范内的预范预读信息中信息当信息亦亦或信息中内的信息中信息中亦亦信息中读亦读信息信息信息信息范范信息范范信息中范范中亦读预秘区：UIViewController {
var ref：FIRDatabaseReference！信范读范读亦读手段中读亦作中亦读范读上作中作范亦作中信息当中信息当中信息当作信息当中中的信讯亦读亦作信息当作信信中上的信息中读）
var val = snapshot.value！如？





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如何解决这个问题？

解决方案

这个错误消息表明令牌中的项目与项目不匹配你的应用程序正在连接。读信息范读将亦亦范范读范范范亦读范读亦读范读亦读信息中范读范讯亦范范内预秘范信息

有几种方法可以达到这个目的：

1. 已将您的GoogleService-Info.plist更改为指向其他项目，但您的应用程序仍然包含上次运行的缓存令牌。

我相信iOS模拟器共享应用程序之间的钥匙串，所以如果您有多个使用Firebase的应用程序，则一个应用程序可能正在拾取由另一个应用程序缓存的令牌。这个 only 发生在模拟器中，我们正在改变Firebase SDK以避免这种情况。

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Experiencing some rather odd issues with Firebase.. I have installed firebase through cocoaPods, included the GoogleService-Info.plist, etc - but when I try to read a value from Firebase, I get this error:

2016-06-16 12:10:04.598 MP[78421:13128189] [FirebaseDatabase] Authentication failed: invalid_token (Invalid claim 'aud' in auth token.)

I have gotten this every single time I have tried to start a new project, except from one time - but I have abandoned that project now, as I am starting a new one. Here is the simple code:

import UIKit
import Firebase
import FirebaseDatabase
class ViewController: UIViewController {
    var ref:FIRDatabaseReference!
    override func viewDidLoad() {
        super.viewDidLoad()
        ref = FIRDatabase.database().reference()
        ref.observeSingleEventOfType(.Value) { (snapshot:FIRDataSnapshot) in
            var val = snapshot.value! as? String
            print(val)
        }
    }
}

How can I fix this?

解决方案

This error message indicates that the project in the token doesn't match the project that your app is connecting to. From a post on the firebase-talk group:

There are a couple ways you may hit this:

1. You've changed your GoogleService-Info.plist to point at a different project, but your app still has a cached token from a previous run.

2. I believe the iOS Simulator shares the keychain between apps, so if you have multiple apps using Firebase, one app might be picking up the token cached by another app. This only happens in the simulator and we're working on changing the Firebase SDK to avoid this.

In either case, you can probably resolve the issue by doing an explicit signOut() call before initializing Firebase Database.

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