Sets the preferred audio data source for the port.
SDKs
- iOS 7.0+
- Mac Catalyst 13.0+
- tvOS 9.0+
Framework
- AVFoundation
Declaration
func setPreferredDataSource(_ dataSource: AVAudioParameters
dataSourceThe data source to use.
Return Value
true if a request was successfully made, otherwise false.
Discussion
Call this method to request a change to the audio session’s preferred data source. To determine whether the change has taken effect, inspect the selected property. (For details, see Configuring the Audio Session in the AVAudio class reference).
If the port is in use, changing this setting is likely to result in a route reconfiguration.
Set a preferred data source only after setting the audio session’s category and mode, and activating the session.