In new Firebase, how to use multiple config file in xcode?

Question

Hey I am playing with the new firebase iOS SDK, in my project, I have only one target, I created two configurations, Debug and Release, with different bundler identifier， but se

Answer 1

Update: see Firebase official documentation https://firebase.google.com/docs/projects/multiprojects

Updated with an easier solution:

1. keep the same names for both GoogleService-Info.plist
2. put one GoogleService-Info.plist inside a subfolder, say "staging"
3. add references to both files in Xcode while linking them to corresponding targets
4. just use FIRApp.configure() in your AppDelegate, done 

---

My first attempt that didn't solve the issue:

I renamed the second GoogleService-Info.json to something else and used following code to configure Firebase from AppDelegate.

// Swift code
#if STAGING
    let firebasePlistFileName = "GoogleService-Staging-Info"
#else
    let firebasePlistFileName = "GoogleService-Info"
#endif
let firbaseOptions = FIROptions(contentsOfFile: NSBundle.mainBundle().pathForResource(firebasePlistFileName, ofType: "plist"))
FIRApp.configureWithOptions(firbaseOptions)

If I run the Staging target, I will receive Firebase's complaint about 'Could not locate configuration file: 'GoogleService-Info.plist'.'. But then it says ' Firebase Analytics v.3300000 started'.

As I checked on the Firebase dashboard, both production and staging apps have incoming user events being logged.

The above-mentioned configureWithOptions method is not documented in Firebase documentation, I figured it out by checking its source code. I'm not sure about what could be the downside of calling this. I would love to hear other approaches.