usage

val usage: Int
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Defines the context in which the stream is used, providing information about why the sound is playing and what the sound is used for. Usage information is more expressive than a stream type and allows platforms or routing policies to refine volume or routing decisions Defaults to AudioAttributes.USAGE_ASSISTANCE_NAVIGATION_GUIDANCE

See also

<a href="https://source.android.com/devices/audio/attributes#using">Using attributes</a>