Step 2. Configure connection properties

In this step, you configure the "kotlin-ui-prototype" sample to connect to the OAuth 2.0 application you created in PingFederate, using OIDC login.

In Android Studio, open the sdk-sample-apps/android/kotlin-ui-prototype folder you cloned in the previous step.
In the Project pane, switch to the Android view.
In the Android view, navigate to app > kotlin+java > com.example.app > env, and open EnvViewModel.kt.

This file has the server environments the sample app uses. Each specifies the properties using the FROptionsBuilder.build method.
Update the PingFederate example configuration with your environment’s details:
```
// Example values for a PingFederate instance
val PingFederate = FROptionsBuilder.build {
    server {
        url = "<PingFederate Base URL>"
    }
    oauth {
        oauthClientId = "<PingFederate Client ID>"
        oauthRedirectUri = "org.forgerock.demo://oauth2redirect"
        oauthSignOutRedirectUri = "org.forgerock.demo://oauth2redirect"
        oauthScope = "openid profile email address"
    }
}
```
Replace the following string with the value you obtained when you registered an OAuth 2.0 application in PingFederate.
<PingFederate Client ID>

The client ID from your OAuth 2.0 application in PingFederate.

For example, sdkPublicClient

<PingFederate Base URL>

The Base URL of your PingFederate server.

How do I find my PingFederate Base URL?

To verify the base URL of your PingFederate server:

Log in to your PingFederate administration console.

Navigate to System Server Protocol Settings.

Make a note of the Base URL value.

For example, https://pingfed.example.com

Do not use the admin console URL.

The sample code adds /.well-known/openid-configuration after the base URL value to form the .well-known endpoint of your server. The SDK reads the OAuth 2.0 paths it requires from this endpoint.
The result resembles the following:
```
val PingFederate = FROptionsBuilder.build {
    server {
        url = "https://pingfed.example.com"
    }
    oauth {
        oauthClientId = "sdkPublicClient"
        oauthRedirectUri = "org.forgerock.demo://oauth2redirect"
        oauthSignOutRedirectUri = "org.forgerock.demo://oauth2redirect"
        oauthScope = "openid profile email address"
    }
}
```

In the init object, check that PingFederate is in the list of server configurations available to the sample app:

For example:

init {
    servers.add(PingAM)
    servers.add(PingAdvancedIdentityCloud)
    servers.add(PingOne)
    servers.add(PingFederate)
}

With the sample configured, you can proceed to Step 3. Test the app.

Ping SDKs

Step 2. Configure connection properties