Add google siginIn in android app
Steps-
Step 1 - Configure a google project in google console. form here - https://console.cloud.google.com/getting-started?pli=1
Step 2 - Select newlly project in google console from top dropdown
Step 3 - Select APIs and Services in left pennal -> Create Cradantail -> OAuth Client Id
Step 4 - Selelct Application type as Android
Step 5 - Give App anme
Step 6 - Enter project SHA and package name and cerate
Note - You can search for how to to get SHA from android studio .