Google Sign in
The keystore that you intend to use to sign the Android app will be used in this step. You might have already created this keystore in previous sections. After generating a signing key, the next step is to add SHA-1 and SHA-256 certificates to the firebase project. You go to the Firebase console > project > project settings > Add fingerprint
Here you add your SHA-1 and SHA-256 certificates, that you generated from your signing key and from the Google play console.
To generate SHA-1 and SHA-256 certificates from the key: https://developers.google.com/android/guides/client-auth#using_keytool_on_the_certificate
To get SHA-1 and SHA-256 certificates from the Google play console: https://developers.google.com/android/guides/client-auth#using_play_app_signing
You might also want to set the project name and email in Firebase > Settings > General > Public settings
Enable Google Sign-In for your Firebase project
To allow users to sign in using Google Sign-In, you must first enable the Google Sign-In provider for your Firebase project:
- In the Firebase console, open the Authentication section.
- On the Sign in method tab, enable the Google provider.
- Click Save.
After adding the certificates, download the google-services.json. Place it at following place:
- Android:
Project_HOME > android > app > google-services.json
Also download the GoogleServices-Info.plist for iOS and place it here:
- iOS:
Project_HOME > ios > Runner > GoogleServices-Info.plist
For iOS you need to provide a URL scheme for Google sign in, open the GoogleService-Info.plist configuration file, and look for the REVERSED_CLIENT_ID key. Copy the value of that key, and paste it into the URL Schemes box on the configuration page
Project_HOME > ios > Runner > Info Tab > URL Types section > Google Login Scheme
On completing above mentioned steps, google sign in is functional.(No additional work is required).
You might need to copy your PlayStore sha1 in your firebase as well to get the google login working.
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