---
title: "run(_:)"
framework: arkit
role: symbol
role_heading: Instance Method
path: "arkit/arkitsession/run(_:)"
---

# run(_:)

Runs a session with the data providers you supply.

## Declaration

```swift
final func run(_ dataProviders: [any DataProvider]) async throws
```

## Parameters

- `dataProviders`: The providers that supply data during this session.

## Discussion

Discussion If you call this method without previously calling the requestAuthorization(for:) method, and if any of the data providers you supply require authorization, the system prompts the user for authorization when you call run(_:). If you call this method on an already-running session, ARKit stops the previous providers unless they’re also in the new array of providers. This method either throws an ARKitSession.Error or asserts when there’s a problem with the data providers you supply. Potential problems include: Passing a data provider that’s already in use in another session Passing a data provider that’s stopped Passing a data provider that’s not supported in the current context, such as in Simulator When this method throws an error, its session stops all of the associated data providers.

## See Also

### Starting and stopping a session

- [init()](arkit/arkitsession/init().md)
- [stop()](arkit/arkitsession/stop().md)
- [ARKitSession.Error](arkit/arkitsession/error.md)