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

# Callbacks

> Configure navigation, analytics, and experience callbacks

Userpilot SDK provides three types of callbacks to help you handle navigation, analytics, and experience lifecycle events within your app

## Navigation Listener

Navigation Listener is called when a deep link is triggered from an experience or notification. It holds the custom deep link URL to be handled by the client app.

Parameters:

```js theme={null}
url: string
```

## Analytics Listener

Analytics Listener is called when an event is triggered by the client app.

Parameters:

```js theme={null}
analytic: string
value: string
properties: Map<string, any>
```

## Analytics Listener

Called when an analytics event is triggered by the Userpilot SDK.
Use this to mirror or log SDK-level events into your analytics system.

Parameters:

```js theme={null}
analytic: "Identify" | "Screen" | "Event"

value: String — Event value, if any.

properties: Map<String, Any> — Additional metadata for the event.
```

## Experience Listener

Called when an experience or its step changes state. Includes two callback types:

**onExperienceStateChanged**
Triggered when the overall state of an experience changes.

```js theme={null}
experienceId?: Int — Unique ID of the experience (optional)

experienceType: "Flow" | "Survey" | "NPS"

experienceState: "Started" | "Completed" | "Dismissed" | "Skipped" | "Submitted"
```

**onExperienceStepStateChanged**
Triggered when the state of a specific step within an experience changes.

```js theme={null}
stepId: Int — Unique identifier of the step

experienceId: Int — ID of the parent experience

experienceType: "Flow" | "Survey" | "NPS"

stepState: "Started" | "Completed" | "Dismissed" | "Skipped" | "Submitted"

step?: Int — Step index (optional)

totalSteps?: Int — Total number of steps in the experience (optional)
```

**Note:** Both callbacks are sent under the same event name: UserpilotExperienceEvent

```js theme={null}
useEffect(() => {
  const eventEmitter = new NativeEventEmitter(
    NativeModules.UserpilotReactNative
  )
  const listeners = [
    eventEmitter.addListener('UserpilotAnalyticsEvent', (event) =>
      console.log('Analytics Event:', JSON.stringify(event, null, 2))
    ),
    eventEmitter.addListener('UserpilotExperienceEvent', (event) =>
      console.log('Experience Event:', JSON.stringify(event, null, 2))
    ),
    eventEmitter.addListener('UserpilotNavigationEvent', (event) => {
      console.log('Navigation Event', JSON.stringify(event, null, 2))
      if (event?.url) handleDeepLink(event.url)
    }),
  ]
  return () => listeners.forEach((listener) => listener.remove())
}, [])
```

<Frame>
  [**For any questions or concerns please reach out to support@userpilot.com**](mailto:support@userpilot.com)
</Frame>