---
title: "resolveRelativeAudioSourceReference(for:with:)"
framework: intents
role: symbol
role_heading: Instance Method
path: "intents/insetaudiosourceincarintenthandling/resolverelativeaudiosourcereference(for:with:)"
---

# resolveRelativeAudioSourceReference(for:with:)

Resolves the audio source using a relative qualifier.

## Declaration

```swift
optional func resolveRelativeAudioSourceReference(for intent: INSetAudioSourceInCarIntent, with completion: @escaping @Sendable (INRelativeReferenceResolutionResult) -> Void)
```

```swift
optional func resolveRelativeAudioSourceReference(for intent: INSetAudioSourceInCarIntent) async -> INRelativeReferenceResolutionResult
```

## Parameters

- `intent`: The intent object containing details about the user’s request. Use this object to get the initial information, if any, provided by the user.
- `completion`: The block to execute with the resolution. You must execute this block at some point during your implementation of this method. This block has no return value and takes the following parameter:

## Discussion

Discussion Implement this method to resolve the user’s request. The intent object passed to this method contains either an explicit audio source or a relative audio source, but not both. Use this method to determine whether the user selected the next or previous audio source and whether you can select that audio source in the user’s vehicle. Always strive toward a successful resolution.

## See Also

### Resolving the Intent Parameters

- [resolveAudioSource(for:with:)](intents/insetaudiosourceincarintenthandling/resolveaudiosource(for:with:).md)