ios - Firebase 未配置 iOS

Question

当我尝试将命令 FIRApp.configure() 添加到 ViewController 中的 viewDidLoad() 方法时，我不断得到:

libc++abi.dylib:以 NSException 类型的未捕获异常终止

这是我的代码:

import UIKit
import Firebase
import FirebaseDatabase


class ViewController: UIViewController {
@IBOutlet weak var usernameTextField: UITextField!
override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
//        if UserDefaults.standard().string(forKey: "username") != nil {
//            performSegue(withIdentifier: "userInfoSegue", sender: self) }
    FIRApp.configure()
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

Answer 1

您应该在 AppDelegate 中调用此方法。

从文档中我们可以看出，configure应该在应用启动后调用。所以将它放在 application(_:didFinishLaunchingWithOptions:) 中是最有意义的，因为该方法在应用程序启动时被调用!

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
    FIRApp.configure()
    return true
}