Package com.stytch.sdk.consumer.oauth

The OAuth.kt interface provides methods for authenticating a user via a native Google OneTap prompt or any of the following third-party OAuth providers, provided you have configured them within your Stytch Dashboard:

• Amazon

• BitBucket

• Coinbase

• Discord

• Facebook

• Github

• GitLab

• Google

• LinkedIn

• Microsoft

• Slack

• Twitch

Google OneTap

In order to use Google OneTap, you must register an activity result listener in your activity to listen for the intent returned by Google, which you will use to authenticate the request with Stytch.

First, define a unique identifier for the activity result, which you will use to both start the Google OneTap flow and listen for the activity result:

const val GOOGLE_OAUTH_REQUEST=123

Second, in your activity, add a listener for that unique identifier in onActivityResult, like so:

class MyActivity : AppCompatActivity() {
    public override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
        super.onActivityResult(requestCode, resultCode, data)
        when (requestCode) {
            GOOGLE_OAUTH_REQUEST -> data?.let { viewModel.authenticateGoogleOneTapLogin(it) }
        }
    }
}

Third, begin the Google OneTap flow by calling the StytchClient.oauth.googleOneTap.start() method making sure to provide the unique identifier created above.

Lastly, in your viewmodel for this example, you can authenticate the request by calling the StytchClient.oauth.googleOneTap.authenticate() method.

Third Party OAuth

In order to use Third-party OAuth flows, there are a few settings you need to configure in your application.

First, ensure you have added the relevant manifest placeholders in your application's build.gradle file (as explained in the /README.md).

Second, similar to the Google OneTap configuration, you must specify a unique identifier for the activity result:

const val THIRD_PARTY_OAUTH_REQUEST = 456

Third, in your activity, add a listener for that unique identifier in onActivityResult, like so:

class MyActivity : AppCompatActivity() {
    public override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
        super.onActivityResult(requestCode, resultCode, data)
        when (requestCode) {
            THIRD_PARTY_OAUTH_REQUEST -> data?.let { viewModel.authenticateThirdPartyOAuth(resultCode, it) }
        }
    }
}

To begin a Third-party OAuth flow, call the StytchClient.oauth.[PROVIDER].start() method, ensuring you pass in the unique third-party OAuth identifier defined previously. This will spawn a new (manager) activity that opens the user's default browser to begin the authentication flow. When the authentication flow has concluded, a new receiver activity intercepts the result, and returns it to the manager activity, which ultimately returns a response to your activity. This helps keep the backstack in order.

Once your listener has retrieved the resultCode and Intent from the activity listener, you can pass both to the StytchClient.oauth.authenticate() method to complete the authentication flow.