How to fix ApiException 10 in Flutter for Android

Issue #188

Get error com.google.android.gms.common.api.ApiException: 10 with google_sign_in package.

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

Certain Google Play services (such as Google Sign-in and App Invites) require you to provide the SHA-1 of your signing certificate so we can create an OAuth2 client and API key for your app

console.developers.google.com/apis/credentials

Credentials -> OAuth client id
If we specify SHA1 in firebase, then console.developers.google.com will generate an Android oauth for us

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keytool -list -v -keystore {keystore_name} -alias {alias_name}

Use correct keystore for debug and release

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buildTypes {
release {
// TODO: Add your own signing config for the release build.
// Signing with the debug keys for now, so `flutter run --release` works.
signingConfig signingConfigs.release
}
debug {
signingConfig signingConfigs.debug
}
}

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