setPreferredDataSource(_:)
Sets the preferred audio data source for the port.
Declaration
func setPreferredDataSource(_ dataSource: AVAudioSessionDataSourceDescription?) throwsParameters
- dataSource:
The data source to use.
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 selectedDataSource property. (For details, see Configuring standard audio behaviors in the AVAudioSession 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.