Once you’ve created the iOS app, Firebase will generate a configuration file for you. You will add this file in your Xcode project. This is how the iOS app can use your own Firebase backend. To do that, just download the configuration file (GoogleService-Info-plist) and replace the existing ios/NameOfApp/GoogleService-Info.plist in your Xcode project.

If you already had an app in Firebase, you can find and download this configuration file in Firebase Console -> Project Settings.

That’s it. Now, when you run your brand new iOS app template, the mobile app will use your own Firebase backend, as opposed to our default one. Make sure you add all the tables and the required data in your Firebase so that the app will have items to display (e.g. food categories, chat messages, etc.).

To quickly test the Swift firebase integration, try registering a new user and see if they show up in Firebase -> Authentication tab.

To finish up your integration, start adding data, such as users, messages, friendships, food items, real estate items, categories, whatever is the case for your specific app.