Sets the preferred audio data source for the port.
SDKs
- iOS 7.0+
- Mac Catalyst 13.0+Beta
- tvOS 9.0+
Framework
- AVFoundation
Declaration
func setPreferredDataSource(_ dataSource: AVAudioParameters
dataSourceThe data source to be used.
Return Value
true if a request was successfully made, or false otherwise.
Discussion
Requests a change of data source; to determine whether the change takes effect, use the selected property. (See “Configuring the Audio Session” in the AVAudio class reference for details.)
If the port is in use, changing this setting will likely result in a route reconfiguration.
Set a preferred data source only after setting the audio session’s category and mode and activating the session.