Different onesignal_app_id depending on environment

[note89]

I would like to have different onesignal_app_id depending on environment production/develop
I want to have this to have a debug environment to not send unexpected notifications to users while developing.

    defaultConfig {
        ...
        manifestPlaceholders = [manifestApplicationId: "${applicationId}",
                                onesignal_app_id: "YOUR_ONESIGNAL_ID",
                                onesignal_google_project_number: "YOUR_GOOGLE_PROJECT_NUMBER"]
    }

I have tried some different approaches but I'm not really sure what the manifestPlaceholders do.
i have something called buildTypes and it has three modes (debug, staging, release), can I put something in there ?
or do something in AndroidManifest ?

Cheers!

[jkasten2]

@note89 You can try some of the suggestions in this issue.
OneSignal/OneSignal-Android-SDK#9