[SOLVED] Expo Google-Sign-In DEVELOPER

Expo Google-Sign-In DEVELOPER_ERROR

I developed a React Native app, and I am using Expo Google-Sign-In for my Firebase authentication. I receive the error "DEVELOPER_ERROR" when I attempt authentication on my standalone APK on Android.

Initially, I was using "Expo Google", however that is now deprecated and my sign-in button did not do anything on my standalone APK. With Expo Google method, I found that I had to set the androidStandaloneAppClientId. Even after that, the sign-in got stuck at the Google homepage after authentication. I tried the solution of using a custom redirect URI, as in

redirectUrl: ${AppAuth.OAuthRedirect}:/oauth2redirect/google

but that resulted in another error: redirect_uri mismatch.

I switched to the Expo Google-Sign-In library instead, and that is giving me a DEVELOPER_ERROR every time I try to authenticate.

After that, I have tried:

downloading the google-services.json and using it in my app
setting the SHA1 fingerprint in google-services.json and in Firebase
setting the certificateHash inside android.configuration.certificate hash inside my app.json to my SHA1 fingerprint.
checking and making sure package names are set properly

I tried anything else I may have failed to mention from the existing threads involving DEVELOPER_ERROR in Expo Google-Sign-In.

The variables I mention in my code below are from the following:

SHA1 was generated and used to create my credential, and is the fingerprint used in my OAuth Android Client ID.

The client ID I reference throughout my files is the ID of my OAuth Web client ID. However, I also tried using the Android one and that did not change anything.

"CurrentKey" in api_key is the API key from my Firebase project.

This is a link to my Google Credentials page.

https://i.sstatic.net/MVfO2.jpg

/* My app.json: */

{
  "expo": {
    "name": "AssistiveNote",
    "privacy": "public",
    "description": "A note app for people who have trouble reading text.",
    "slug": "assistivenote",

    "sdkVersion": "33.0.0",
    "version": "2.0.0",
    "orientation": "portrait",
    "icon": "./screens/images/icon.png",


    "ios": {
      "bundleIdentifier": "com.danyalbabar.assistivenote"
    },

    "android": {
      "versionCode": 2,
      "package": "com.danyalbabar.assistivenote",
      "googleServicesFile": "./google-services.json",
      "permissions": [ " " ],
      "config": {
        "googleSignIn": {
            "certificateHash": "XXXX"
        }
      }
    }

  }
}

My google-services.json:

  {
  "project_info": {
    "project_number": "XXXX",
    "firebase_url": "https://era-gvision.firebaseio.com",
    "project_id": "era-gvision",
    "storage_bucket": "era-gvision.appspot.com"
  },
  "client": [
    {
      "client_info": {
        "mobilesdk_app_id": "XXXX",
        "android_client_info": {
          "package_name": "com.danyalbabar.assistivenote"
        }
      },
      "oauth_client": [
        {
          "client_id": "XXXX",
          "client_type": 3
        }
      ],
      "api_key": [
        {
          "current_key": "XXXX"
        }
      ],
      "services": {
        "appinvite_service": {
          "other_platform_oauth_client": [
            {
              "client_id": "XXXX",
              "client_type": 3
            }
          ]
        }
      }
    }
  ],
  "configuration_version": "1"
}

Solution

Overall it seemed like there was a lot of broken behaviour with this API and it is now deprecated. I moved on to use email/password authentication at the time, but there are now updated Expo APIs that are implemented in new ways.

https://docs.expo.io/guides/authentication/