---
title: "setAggregatedIOPreference(_:)"
framework: avfaudio
role: symbol
role_heading: Instance Method
path: "avfaudio/avaudiosession/setaggregatediopreference(_:)"
---

# setAggregatedIOPreference(_:)

Sets the audio session’s aggregated I/O configuration preference.

## Declaration

```swift
func setAggregatedIOPreference(_ inIOType: AVAudioSession.IOType) throws
```

## Parameters

- `inIOType`: The aggregated I/O preference that you want to use.

## Discussion

Discussion Starting with iOS 10, AVCaptureSession has changed its default audio input configuration on iPhone and iPad devices that support the Live Photos feature. This change allows taking a Live Photo without interrupting background audio playback. Configure your preferred audio input behavior by setting your aggregated I/O preference. Apps that use AVCaptureSession in its default audio input configuration (usesApplicationAudioSession = true, automaticallyConfiguresApplicationAudioSession = true), and that need to guarantee the same behavior as previous versions of iOS, should opt-out of this new behavior by setting the aggregated I/O preference to AVAudioSession.IOType.aggregated. Apps that don’t use AVCaptureSession, or that use a capture session in its nondefault configuration, can ignore this preference. In these cases, there’s no change in behavior from previous versions of iOS.

## See Also

### Setting the aggregated I/O preference

- [AVAudioSession.IOType](avfaudio/avaudiosession/iotype.md)