Considering the vast array of features included in Firebase, adding it to your project is surprisingly easy. Later versions of Android Studio even include an assistant that analyses the current project and provides fixes for common integration mistakes.
This guide however, will focus on the very straightforward steps required to integrate Firebase manually.
Google Services file
The next step is obtaining a
google-services.json file, so that the app knows which Firebase project to talk to. This can be done by visiting the project overview and clicking the Android icon.
This will bring up the “Add Firebase” wizard:
- Android package name: The only required part of this form, this is the package name used when creating your app. It will be visible in the
- App nickname: This is an optional “friendly” name you can use to better summarise the app.
- Debug signing certificate: This is not needed for most aspects of Firebase, but a guide does exist.
Once 1-3 of the fields have been filled in, the app can now be registered (4). Clicking this button will provide a download link for your
google-services.json file, as well as instructions on where to put it. Switch to “Project” view in the left Android Studio sidebar, then put the downloaded file inside the “app” folder.
Next, the Firebase library needs to be added to your project. Doing this is just 4 simple steps:
classpath 'com.google.gms:google-services:4.0.1'inside the
dependenciessection of your project level
build.gradle(file will have “(Project: yourappname)” next to it).
implementation 'com.google.firebase:firebase-core:16.0.3'inside the
dependenciessection of your app level
build.gradle(file will have “(Module: app)” next to it).
- Also add
apply plugin: 'com.google.gms.google-services'to the bottom of the app level
- Finally, press “Sync now” in the yellow bar at the top.
Note: As of writing, 16.0.3 is the latest Firebase version, and 4.0.1 the latest Google services version. If these are outdated, Android Studio will prompt you to update.
Finally, just run your app, and the “Add Firebase” wizard will confirm Firebase has been set up correctly:
That’s it, Firebase is fully set up! Your project settings (e.g. name) can be changed later if necessary.