ios - 未配置 Firebase 应用

Question

这是随机开始发生的，我无法通过它。我的应用程序在调试区域启动时崩溃。

2016-10-29 14:31:57.606 gigMe[2285:73317] Firebase automatic screen reporting is enabled. Call +[FIRAnalytics setScreenName:setScreenClass:] to set the screen name or override the default screen class name. To disable automatic screen reporting, set the flag FirebaseAutomaticScreenReportingEnabled to NO in the Info.plist

2016-10-29 14:31:57.783 gigMe[2285] [Firebase/Core][I-COR000003] The default Firebase app has not yet been configured. Add [FIRApp configure] to your application initialization. Read more: gives google address that i cant post on here

2016-10-29 14:31:57.911 gigMe[2285:73317] * Terminating app due to uncaught exception 'FIRAppNotConfigured', reason: 'Failed to get default FIRDatabase instance. Must call FIRApp.configure() before using FIRDatabase.' * First throw call stack:

我真的一点都不明白，因为我没有弄乱任何与数据库有关的事情，这是我的didFinishLaunchingWithOptions 方法:

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    // Override point for customization after application launch.
    print("wtf")
    FIRApp.configure()

    return true
}

我也没有在调试器中打印任何内容。有人知道发生了什么吗？

Answer 1

这不是 FIRApp.configure() 错误。您可能会在您的任何类中声明一个具有某些类函数的全局变量，例如

class viewCon : UIViewController{

let ref = FIRDatabase.database().reference() // or a Storage reference
    // This might be the error
   }

发生这种情况的原因是，您正在尝试使用类函数/属性初始化变量，而该类函数/属性可能尚未配置。所以试试这个:-

 class viewCon : UIViewController{

    let ref : FIRDatabaseReference! 
       // This might be the error or a Storage reference

     override func viewDidLoad(){

       super.viewDidLoad()
       ref =  FIRDatabase.database().reference()
      }
  }

为了支持上述理论，尝试在 let ref = FIRDatabase.database().reference() 和 FIRApp.configure() 上使用断点，看看哪一个得到先叫。如果 let ref = FIRDatabase.database().reference() 首先被调用，你一定会遇到这个错误，因为 ref 正在尝试访问尚未配置的 FIRDatabase 类..