Android Setup

To integrate your plugin into the Android part of your app, follow these steps (from the firebase messaging plugin):

1. Using the Firebase Console add an Android app to your project: Follow the assistant, download the generated google-services.json file and place it inside android/app.

2. Add the classpath to the [project]/android/build.gradle file.

dependencies {
  // Example existing classpath
  classpath 'com.android.tools.build:gradle:3.5.3'
  // Add the google services classpath
  classpath 'com.google.gms:google-services:4.3.2'
}

3. Add the apply plugin to the [project]/android/app/build.gradle file.

// ADD THIS AT THE BOTTOM
apply plugin: 'com.google.gms.google-services'

If this section is not completed you will get an error like this:

java.lang.IllegalStateException:
Default FirebaseApp is not initialized in this process [package name].
Make sure to call FirebaseApp.initializeApp(Context) first.

When you are debugging on Android, use a device or AVD with Google Play services. Otherwise you will not be able to authenticate.When you are debugging on Android, use a device or AVD with Google Play services. Otherwise you will not be able to authenticate.