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Help us understand the problem. What is going on with this article?

FirebaseのDatabaseで詰まったとこ

More than 3 years have passed since last update.

CocoaPodsにインストールしたりjsonファイルを入れたりと、コンソールで指示されたことを一通りやったあと

ViewController.swift
import UIKit
import Firebase

class ViewController:UIViewController{

    let ref = FIRDatabase.database().reference()

    override func viewDidLoad() {
        super.viewDidLoad()

みたいな感じに書こうとすると

Terminating app due to uncaught exception 'FIRAppNotConfigured', 
reason: 'Failed to get default FIRDatabase instance. 
Must call FIRApp.configure() before using FIRDatabase.'

というエラーが出てしまった。
FIRApp.configure()が呼ばれる前にFIRDatabaseを使おうとしてるのがいけないらしい

AppDelegate.swiftでFIRApp.configure()をdidFinishLaunchingWithOptionsに書いてたので

init()を追加して、その中に移すとちゃんと動いてくれた

AppDelegate.swift
    override init() {
         super.init()
         FIRApp.configure()
    }

turmeric
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