AudioManagerCompat

const val AUDIOFOCUS_GAIN = 1: Int

Used to indicate a gain of audio focus, or a request of audio focus, of unknown duration.

const val AUDIOFOCUS_GAIN_TRANSIENT = 2: Int

Used to indicate a temporary gain or request of audio focus, anticipated to last a short amount of time. Examples of temporary changes are the playback of driving directions, or an event notification.

const val AUDIOFOCUS_GAIN_TRANSIENT_EXCLUSIVE = 4: Int

Used to indicate a temporary request of audio focus, anticipated to last a short amount of time, during which no other applications, or system components, should play anything. Examples of exclusive and transient audio focus requests are voice memo recording and speech recognition, during which the system shouldn't play any notifications, and media playback should have paused.

const val AUDIOFOCUS_GAIN_TRANSIENT_MAY_DUCK = 3: Int

Used to indicate a temporary request of audio focus, anticipated to last a short amount of time, and where it is acceptable for other audio applications to keep playing after having lowered their output level (also referred to as "ducking"). Examples of temporary changes are the playback of driving directions where playback of music in the background is acceptable.

java-static fun abandonAudioFocusRequest(
    audioManager: AudioManager,
    focusRequest: AudioFocusRequestCompat
): Int

Abandon audio focus. Causes the previous focus owner, if any, to receive focus.

java-static fun getStreamMaxVolume(audioManager: AudioManager, streamType: Int): @IntRange(from = 0) Int

Returns the maximum volume index for a particular stream.

java-static fun getStreamMinVolume(audioManager: AudioManager, streamType: Int): @IntRange(from = 0) Int

Returns the minimum volume index for a particular stream.

java-static fun isVolumeFixed(audioManager: AudioManager): Boolean

Indicates if the device implements a fixed volume policy.

Some devices may not have volume control and may operate at a fixed volume, and may not enable muting or changing the volume of audio streams. This method will return true on such devices.

Compatibility: It returns false on API level below 21 even if the device has fixed volume.

java-static fun requestAudioFocus(
    audioManager: AudioManager,
    focusRequest: AudioFocusRequestCompat
): Int

Requests audio focus. See the AudioFocusRequestCompat for information about the options available to configure your request, and notification of focus gain and loss.