Good to know: account linking is useful if you wish to use AIS (Account Information Service) or skip authentication steps when initiating payments via the in-app payments module.
Initialize Account Linking
Firstly, you will need to integrate kevin. API and fetch account linking state.
AccountSessionConfiguration can be configured with following properties:
setPreselectedCountry - allows to set a default country to be selected in the bank selection screen. If this parameter is not specified, the selection will be based on the SIM card information. In case the SIM card information is not available, the SDK will use the device locale. If the SIM card information and device locale are unavailable, the SDK will select the first country from the country filter (or fall back to the first bank on the list).
setPreselectedBank - allows to specify a default bank that will be preselected in the bank selection screen.
setCountryFilter - allows only certain countries to be supported.
setBankFilter - allows to filter banks and show only selected ones to the user. It requires a list of bank IDs that should be shown.
setDisableCountrySelection - if set to true, country selection will be disabled, and only preselected country banks will be available to choose from.
setSkipBankSelection - if set to true, and bank selection step will be skipped, and the user will be redirected to the bank SCA immediately.
Example:
// initialize configuration with state fetched from the API val config = AccountSessionConfiguration.Builder("state") .setPreselectedCountry(KevinCountry.LITHUANIA) .setCountryFilter(listOf( KevinCountry.LITHUANIA, KevinCountry.ESTONIA, KevinCountry.LATVIA ) ) .setBankFilter(listOf("SWEDBANK_LT","SEB_LT","LUMINOR_LT","REVOLUT_LT" ) ) .setPreselectedBank("SOME_BANK_ID") .build()linkAccount.launch(config)
Initialize Account Linking callback
Fragment or Activity
If you intend to call account linking from Activity or Fragment, registerForActivityResult can be used for that:
classSampleFragment : Fragment() {privateval viewModel: SampleViewModelbyviewModels()privateval linkAccount =registerForActivityResult(AccountSessionContract()) {when (it) {is SessionResult.Success -> {// get linkingType by calling it.value.linkingType// get account token by calling it.value.authorizationCode// get bank info by calling it.value.bank }is SessionResult.Canceled -> {// handle user cancellation }is SessionResult.Failure -> {// handle linking session failure } } }overridefunonCreateView( inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle? ): View {observeChanges()return FragmentSampleBinding.inflate(inflater).apply { linkAccountButton.setDebounceClickListener {// fetch account linking state from kevin. API viewModel.initializeAccountLinking() } }.root }privatefunobserveChanges() {// observe returned state here lifecycleScope.launchWhenStarted { viewModel.state.onEach { state ->openAccountLinkingSession(state) }.launchIn(this) } }privatefunopenAccountLinkingSession(state: String) {val config = AccountSessionConfiguration.Builder(state) .setPreselectedCountry(KevinCountry.LITHUANIA) .build() linkAccount.launch(config) }}
Jetpack Compose
The same solution is available on Jetpack Compose:
@ComposablefunSampleWindow(viewModel: SampleViewModel) {val linkAccount =rememberLauncherForActivityResult(AccountSessionContract()) { result ->when (it) {is SessionResult.Success -> {// get linkingType by calling it.value.linkingType// get account token by calling it.value.authorizationCode// get bank info by calling it.value.bank }is SessionResult.Canceled -> {// handle user cancellation }is SessionResult.Failure -> {// handle linking session failure } } }LaunchedEffect(viewModel) { viewModel.state.onEach { state ->val config = AccountSessionConfiguration.Builder(state) .setPreselectedCountry(KevinCountry.LITHUANIA) .build() linkAccount.launch(config) }.launchIn(this) }Scaffold {Button( text ="Link Account", onClick = { // fetch account linking state from kevin. API viewModel.initializeAccountLinking() } ) }}
Custom solutions
For non Fragment, Activity or Jetpack Compose windows please use custom ActivityResultRegistry: