---
title: "ARKitSession.Event.dataProviderStateChanged(dataProviders:newState:error:)"
framework: arkit
role: symbol
role_heading: Case
path: "arkit/arkitsession/event/dataproviderstatechanged(dataproviders:newstate:error:)"
---

# ARKitSession.Event.dataProviderStateChanged(dataProviders:newState:error:)

An event that represents a state change of one or more of the data providers associated with a session.

## Declaration

```swift
case dataProviderStateChanged(dataProviders: [any DataProvider], newState: DataProviderState, error: ARKitSession.Error?)
```

## Parameters

- `dataProviders`: The data providers whose state has changed.
- `newState`: The new data provider state, which triggered the event.
- `error`: An ARKitSession.Error associated with the state change, if any. This is only applicable to DataProviderState.stopped updates.