> ## Documentation Index
> Fetch the complete documentation index at: https://primer.io/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# setCheckoutUiListener

Set the `PrimerHeadlessUniversalCheckoutUiListener` in order to receive different callbacks from Primer SDK.

```kotlin KOTLIN theme={"dark"}
fun setCheckoutUiListener(uiListener: PrimerHeadlessUniversalCheckoutUiListener)
```

## Parameters

<Expandable title="Parameters" defaultOpen>
  <ResponseField name="uiListener" type="PrimerHeadlessUniversalCheckoutUiListener" required>
    Set Primer SDK's [Headless Checkout Ui Listener](/sdk/android/v2.x.x/primer-headless-checkout/listeners/PrimerHeadlessUniversalCheckoutUiListener).
  </ResponseField>
</Expandable>