---
sourceDocument: Xanadu API Reference
sourceDocumentLink: https://servicenow-prod.fluidtopics.net/r/xanadu/api-reference

 Release :

    - xanadu

ft:locale :

    - en-US

ft:publication_title :

    - Xanadu API Reference

ft:clusterId :

    - crapiref

bundleId :

    - crapiref

workflow :

    - Creator


---

# Initialize the NowSDK in your application

# Initialize the NowSDK in your application {#ariaid-title1}

* Release version: Xanadu
* 
* Updated August 1, 2024
* 
* ![](https://www.servicenow.com/docs/portal-asset/ico-clock) 1 minute to read

In order to use the Mobile SDK in your application, you need to perform
SDK initialization, authorization, and logging.
As you use the NowSDK, it makes a request to configure the SDK and provides callbacks from
the SDK. Once the SDK is configured, an application can use the feature services and their
associated APIs. This setup/configuration helps to make an authenticated call to a ServiceNow instance.  
The following is an example of how to initialize the NowSDK in your Android application.

    //Helper class to encapsulate value needed to initialize the sdk
    data class NowSDKSettings(val instanceBaseURL : String, val clientId: String, val user: String?)

    class SampleApplication : Application(), NowSDKAuthorizationProviding, DevicePermissionDelegate {

        private val nowSdkSettings = NowSDKSettings(
            instanceBaseURL = "https://instance-name.service-now.com",
            clientId = "client_id",
            user = "user"
        )

        private val coroutineScope = CoroutineScope(Dispatchers.IO)

        private val nowSDKConfiguration = NowSDKConfiguration(this, this, NowLogLevel.Debug)

        override fun onCreate() {
            super.onCreate()
            NowSDK.configure(this, nowSDKConfiguration)
        }

        override fun requestAuthorization(
            instanceURL: URL,
            callback: Consumer<List<AuthorizationToken>?>
        ) {
            coroutineScope.launch {
                when {
                    nowSdkSettings.user.isNullOrBlank().not() -> authorizeWithJWT(
                        callback = callback,
                        user = nowSdkSettings.user,
                        clientId = nowSdkSettings.clientId
                    )

                    else -> authorizeWithGuest(callback = callback)
                }
            }
        }

        override fun canRequestPermission(permission: DevicePermission): Boolean {
            return true
        }

        private fun authorizeWithJWT(
            callback: Consumer<List<AuthorizationToken>?>,
            user: String?,
            clientId: String
        ) {
            //Get JWT token needed for the sdk initialization.
            val jwtToken ="jwt_token"

            callback.accept(listOf(AuthorizationToken(AuthorizationTokenType.JWT, jwtToken)))
        }

        private fun authorizeWithGuest(callback: Consumer<List<AuthorizationToken>?>) {
            callback.accept(
                listOf(
                    AuthorizationToken(
                        AuthorizationTokenType.Guest,
                        ""
                    )
                )
            )
        }
    }