1. Create project in Google Filebase(https://console.firebase.google.com/):
2. Creat a Web Client ID on Google Console page:https://console.developers.google.com/apis/credentials?project=mts-service-tips-“Create credentials” -> “OAuth client ID”

   

   -“Web application” -> “Create”

   

3. Copy the Client ID of the Web application you just created to put in your Android gradle file: GOOGLE_WEB_CLIENT_ID=588682943670-9du92ps4tu9j477aqikdq201bpds8d65.apps.googleusercontent.com
4. Copy Client ID from Android Client,

   put in IAM > Providers > accounts.google.com

   

How to generate SHA certificate fingerprints

reference:https://developers.google.com/android/guides/client-auth

Command: keytool -exportcert -list -v -alias -keystore

Debug: keytool -exportcert -list -v -alias androiddebugkey -keystore ~/.android/debug.keystore

Probably you will get: SHA1: BB:94:85:A2:BD:F1:33:96:91:3F:18:01:F3:DF:F0:FD:5D:BE:DF:12

Release: keytool -exportcert -list -v -alias androiddebugkey -keystore ~/repo/ebuilder/customer_journey/android/app/andriod.release.keystore