Flutter Social SignIn Options

There have been many guides to get started with Google Sign using Firebase.

While this sample code will help you setup google_sign_in library without firebase.

Flutter Google SignIn with PHP

1. Create a GCP project at https://console.cloud.google.com/projectcreate

2. Next go to https://developers.google.com/identity/sign-in/web/sign-in and select Configure Project, client as Android. Enter Package name and SHA1

Generating SHA1 signing certificates.

1. Execute in terminal (assign a password and some other parameters)

   keytool -genkey -v -keystore ~/key.jks -keyalg RSA -keysize 2048 -validity 10000 -alias androiddebugkey

2. From the above step you will have a key.jks file for you.

3. In android/app/build.gradle under android add these settings:

   signingConfigs {
       debug {
           storeFile file('key.jks') 
           storePassword 'epynic'
           keyAlias 'androiddebugkey'
           keyPassword 'epynic'
       }
   }
   buildTypes {
       debug {
           signingConfig signingConfigs.debug
       }
   }
   

   storeFile file('/home/epynic/key.jks') - path to your key file generated in step 2

   storePassword 'epynic' & keyPassword 'epynic' the password used to generate the key in step 2.

4. In termial execute keytool -keystore key.jks -list -v and in the output you’ll have the SHA-1 fingerprint.

5. Find your package name at AndroidManifest.xml file, under the package= attribute.