AudioManager Class

Reference

Definition

Namespace:: Android.Media

Assembly:: Mono.Android.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

AudioManager provides access to volume and ringer mode control.

[Android.Runtime.Register("android/media/AudioManager", DoNotGenerateAcw=true)]
public class AudioManager : Java.Lang.Object

[<Android.Runtime.Register("android/media/AudioManager", DoNotGenerateAcw=true)>]
type AudioManager = class
    inherit Object

Inheritance: Object

Object
AudioManager

Attributes: RegisterAttribute

Remarks

AudioManager provides access to volume and ringer mode control.

Java documentation for android.media.AudioManager.

Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.

Constructors

AudioManager(IntPtr, JniHandleOwnership)

A constructor used when creating managed representations of JNI objects; called by the runtime.

Fields

ActionAudioBecomingNoisy	Broadcast intent, a hint for applications that audio is about to become 'noisy' due to a change in audio outputs.
ActionHdmiAudioPlug	Broadcast Action: A sticky broadcast indicating an HDMI cable was plugged or unplugged.
ActionHeadsetPlug	Broadcast Action: Wired Headset plugged in or unplugged.
ActionMicrophoneMuteChanged	Broadcast Action: microphone muting state changed.
ActionScoAudioStateChanged	Obsolete. Sticky broadcast intent action indicating that the Bluetooth SCO audio connection state has changed.
ActionScoAudioStateUpdated	Sticky broadcast intent action indicating that the Bluetooth SCO audio connection state has been updated.
ActionSpeakerphoneStateChanged	Broadcast Action: speakerphone state changed.
AudiofocusGain	Obsolete. Used to indicate a gain of audio focus, or a request of audio focus, of unknown duration.
AudiofocusGainTransient	Obsolete. Used to indicate a temporary gain or request of audio focus, anticipated to last a short amount of time.
AudiofocusGainTransientExclusive	Obsolete. 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.
AudiofocusGainTransientMayDuck	Obsolete. 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").
AudiofocusLoss	Obsolete. Used to indicate a loss of audio focus of unknown duration.
AudiofocusLossTransient	Obsolete. Used to indicate a transient loss of audio focus.
AudiofocusLossTransientCanDuck	Obsolete. Used to indicate a transient loss of audio focus where the loser of the audio focus can lower its output volume if it wants to continue playing (also referred to as "ducking"), as the new focus owner doesn't require others to be silent.
AudiofocusNone	Obsolete. Used to indicate no audio focus has been gained or lost, or requested.
AudiofocusRequestDelayed	Obsolete. A focus change request whose granting is delayed: the request was successful, but the requester will only be granted audio focus once the condition that prevented immediate granting has ended.
AudiofocusRequestFailed	Obsolete. A failed focus change request.
AudiofocusRequestGranted	Obsolete. A successful focus change request.
AudioSessionIdGenerate	A special audio session ID to indicate that the audio session ID isn't known and the framework should generate a new value.
DirectPlaybackBitstreamSupported	Obsolete. Return value for `#getDirectPlaybackSupport(AudioFormat, AudioAttributes)`: direct playback supported.
DirectPlaybackNotSupported	Obsolete. Return value for `#getDirectPlaybackSupport(AudioFormat, AudioAttributes)`: direct playback not supported.
DirectPlaybackOffloadGaplessSupported	Obsolete. Return value for `#getDirectPlaybackSupport(AudioFormat, AudioAttributes)`: direct offload playback supported with gapless transitions.
DirectPlaybackOffloadSupported	Obsolete. Return value for `#getDirectPlaybackSupport(AudioFormat, AudioAttributes)`: direct offload playback supported.
EncodedSurroundOutputAlways	Obsolete. The surround sound formats are ALWAYS available, even if they are not detected by the hardware.
EncodedSurroundOutputAuto	Obsolete. The surround sound formats are available for use if they are detected.
EncodedSurroundOutputManual	Obsolete. Surround sound formats are available according to the choice of user, even if they are not detected by the hardware.
EncodedSurroundOutputNever	Obsolete. The surround sound formats are NEVER available, even if they are detected by the hardware.
EncodedSurroundOutputUnknown	Obsolete. The mode for surround sound formats is unknown.
Error	A default error code.
ErrorDeadObject	An error code indicating that the object reporting it is no longer valid and needs to be recreated.
ExtraAudioPlugState	Extra used in `#ACTION_HDMI_AUDIO_PLUG` to communicate whether HDMI is plugged in or unplugged.
ExtraEncodings	Extra used in `#ACTION_HDMI_AUDIO_PLUG` to define the audio encodings supported by the connected HDMI device.
ExtraMaxChannelCount	Extra used in `#ACTION_HDMI_AUDIO_PLUG` to define the maximum number of channels supported by the HDMI device.
ExtraRingerMode	The new ringer mode.
ExtraScoAudioPreviousState	Extra for intent `#ACTION_SCO_AUDIO_STATE_UPDATED` containing the previous bluetooth SCO connection state.
ExtraScoAudioState	Extra for intent `#ACTION_SCO_AUDIO_STATE_CHANGED` or `#ACTION_SCO_AUDIO_STATE_UPDATED` containing the new bluetooth SCO connection state.
ExtraVibrateSetting	Obsolete. The new vibrate setting for a particular type.
ExtraVibrateType	Obsolete. The vibrate type whose setting has changed.
FxBack	Obsolete. Back sound
ModeCallRedirect	Obsolete. A telephony call is established and its audio is being redirected to another device.
ModeCallScreening	Obsolete. Call screening in progress.
ModeCommunicationRedirect	Obsolete. An audio/video chat or VoIP call is established and its audio is being redirected to another device.
NumStreams	Obsolete. This member is deprecated.
PlaybackOffloadGaplessSupported	Obsolete. Return value for `#getPlaybackOffloadSupport(AudioFormat, AudioAttributes)`: offload playback supported with gapless transitions
PlaybackOffloadNotSupported	Obsolete. Return value for `#getPlaybackOffloadSupport(AudioFormat, AudioAttributes)`: offload playback not supported
PlaybackOffloadSupported	Obsolete. Return value for `#getPlaybackOffloadSupport(AudioFormat, AudioAttributes)`: offload playback supported
PropertyOutputFramesPerBuffer	Used as a key for `#getProperty` to request the native or optimal output buffer size for this device's low latency output stream, in decimal PCM frames.
PropertyOutputSampleRate	Used as a key for `#getProperty` to request the native or optimal output sample rate for this device's low latency output stream, in decimal Hz.
PropertySupportAudioSourceUnprocessed	Used as a key for `#getProperty` to determine if the unprocessed audio source is available and supported with the expected frequency range and level response.
PropertySupportMicNearUltrasound	Used as a key for `#getProperty` to determine if the default microphone audio source supports near-ultrasound frequencies (range of 18 - 21 kHz).
PropertySupportSpeakerNearUltrasound	Used as a key for `#getProperty` to determine if the default speaker audio path supports near-ultrasound frequencies (range of 18 - 21 kHz).
RingerModeChangedAction	Sticky broadcast intent action indicating that the ringer mode has changed.
ScoAudioStateConnected	Obsolete. Value for extra `#EXTRA_SCO_AUDIO_STATE` or `#EXTRA_SCO_AUDIO_PREVIOUS_STATE` indicating that the SCO audio channel is established
ScoAudioStateConnecting	Obsolete. Value for extra EXTRA_SCO_AUDIO_STATE or EXTRA_SCO_AUDIO_PREVIOUS_STATE indicating that the SCO audio channel is being established
ScoAudioStateDisconnected	Obsolete. Value for extra EXTRA_SCO_AUDIO_STATE or EXTRA_SCO_AUDIO_PREVIOUS_STATE indicating that the SCO audio channel is not established
ScoAudioStateError	Obsolete. Value for extra EXTRA_SCO_AUDIO_STATE indicating that there was an error trying to obtain the state
StreamAccessibility	Obsolete. Used to identify the volume of audio streams for accessibility prompts
UseDefaultStreamType	Suggests using the default stream type.
VibrateSettingChangedAction	Obsolete. Broadcast intent action indicating that the vibrate setting has changed.

Properties

ActivePlaybackConfigurations	Returns the current active audio playback configurations of the device
ActiveRecordingConfigurations	Returns the current active audio recording configurations of the device.
AllowedCapturePolicy	Return the capture policy. -or- Specifies whether the audio played by this app may or may not be captured by other apps or the system.
AvailableCommunicationDevices	Returns a list of audio devices that can be selected for communication use cases via `#setCommunicationDevice(AudioDeviceInfo)`.
BluetoothA2dpOn	Obsolete. Checks whether a Bluetooth A2DP audio peripheral is connected or not. -or- This member is deprecated.
BluetoothScoOn	Checks whether communications use Bluetooth SCO. -or- Request use of Bluetooth SCO headset for communications.
Class	Returns the runtime class of this `Object`. (Inherited from Object)
CommunicationDevice	Returns currently selected audio device for communication.
EncodedSurroundMode	Gets the surround sound mode.
Handle	The handle to the underlying Android instance. (Inherited from Object)
IsBluetoothScoAvailableOffCall	Indicates if current platform supports use of SCO for off call use cases.
IsCallScreeningModeSupported	Indicates if the platform supports a special call screening and call monitoring mode.
IsHapticPlaybackSupported	Return if audio haptic coupled playback is supported or not.
IsMusicActive	Checks whether any music is active.
IsRampingRingerEnabled	Returns the current user setting for ramping ringer on incoming phone call ringtone.
IsVolumeFixed	Indicates if the device implements a fixed volume policy.
JniIdentityHashCode	(Inherited from Object)
JniPeerMembers
MicrophoneMute	Checks whether the microphone mute is on or off. -or- Sets the microphone mute on or off.
Microphones	Returns a list of `MicrophoneInfo` that corresponds to the characteristics of all available microphones.
Mode	Returns the current audio mode. -or- Sets the audio mode.
PeerReference	(Inherited from Object)
RingerMode	Returns the current ringtone mode. -or- Sets the ringer mode.
Spatializer	Return a handle to the optional platform's `Spatializer`
SpeakerphoneOn	Checks whether the speakerphone is on or off. -or- Sets the speakerphone on or off.
ThresholdClass	This API supports the Mono for Android infrastructure and is not intended to be used directly from your code.
ThresholdType	This API supports the Mono for Android infrastructure and is not intended to be used directly from your code.
WiredHeadsetOn	Obsolete. Checks whether a wired headset is connected or not. -or- Sets audio routing to the wired headset on or off.

Methods

AbandonAudioFocus(AudioManager+IOnAudioFocusChangeListener)	Abandon audio focus.
AbandonAudioFocusRequest(AudioFocusRequestClass)	Abandon audio focus.
AddOnCommunicationDeviceChangedListener(IExecutor, AudioManager+IOnCommunicationDeviceChangedListener)	Adds a listener for being notified of changes to the communication audio device.
AddOnModeChangedListener(IExecutor, AudioManager+IOnModeChangedListener)	Adds a listener to be notified of changes to the audio mode.
AddOnPreferredMixerAttributesChangedListener(IExecutor, AudioManager+IOnPreferredMixerAttributesChangedListener)
AdjustStreamVolume(Stream, Adjust, VolumeNotificationFlags)	Adjusts the volume of a particular stream by one step in a direction.
AdjustSuggestedStreamVolume(Adjust, Stream, VolumeNotificationFlags)	Adjusts the volume of the most relevant stream, or the given fallback stream.
AdjustVolume(Adjust, VolumeNotificationFlags)	Adjusts the volume of the most relevant stream.
AdjustVolumeGroupVolume(Int32, Adjust, VolumeNotificationFlags)	Adjusts the volume of a particular group associated to given id by one step in a direction.
ClearCommunicationDevice()	Cancels previous communication device selection made with `#setCommunicationDevice(AudioDeviceInfo)`.
ClearPreferredMixerAttributes(AudioAttributes, AudioDeviceInfo)	Clears the current preferred mixer attributes that were previously set via `#setPreferredMixerAttributes(AudioAttributes, AudioDeviceInfo, AudioMixerAttributes)`
Clone()	Creates and returns a copy of this object. (Inherited from Object)
DispatchMediaKeyEvent(KeyEvent)	Sends a simulated key event for a media button.
Dispose()	(Inherited from Object)
Dispose(Boolean)	(Inherited from Object)
Equals(Object)	Indicates whether some other object is "equal to" this one. (Inherited from Object)
FromContext(Context)
GenerateAudioSessionId()	Return a new audio session identifier not associated with any player or effect.
GetAudioDevicesForAttributes(AudioAttributes)	Get the audio devices that would be used for the routing of the given audio attributes.
GetAudioHwSyncForSession(Int32)	Retrieves the Hardware A/V synchronization ID corresponding to the given audio session ID.
GetDevices(GetDevicesTargets)	Returns an array of `AudioDeviceInfo` objects corresponding to the audio devices currently connected to the system and meeting the criteria specified in the `flags` parameter.
GetDirectPlaybackSupport(AudioFormat, AudioAttributes)	Returns a bitfield representing the different forms of direct playback currently available for a given audio format.
GetDirectProfilesForAttributes(AudioAttributes)	Returns a list of direct `AudioProfile` that are supported for the specified `AudioAttributes`.
GetHashCode()	Returns a hash code value for the object. (Inherited from Object)
GetParameters(String)	Gets a variable number of parameter values from audio hardware.
GetPlaybackOffloadSupport(AudioFormat, AudioAttributes)	Returns whether offloaded playback of an audio format is supported on the device or not and when supported whether gapless transitions are possible or not.
GetPreferredMixerAttributes(AudioAttributes, AudioDeviceInfo)	Returns current preferred mixer attributes that is set via `#setPreferredMixerAttributes(AudioAttributes, AudioDeviceInfo, AudioMixerAttributes)`
GetProperty(String)	Returns the value of the property with the specified key.
GetRouting(Mode)	Obsolete. Returns the current audio routing bit vector for a specified mode.
GetStreamMaxVolume(Stream)	Returns the maximum volume index for a particular stream.
GetStreamMinVolume(Stream)	Returns the minimum volume index for a particular stream.
GetStreamVolume(Stream)	Returns the current volume index for a particular stream.
GetStreamVolumeDb(Stream, Int32, Int32)	Returns the volume in dB (decibel) for the given stream type at the given volume index, on the given type of audio output device.
GetSupportedMixerAttributes(AudioDeviceInfo)	Returns the `AudioMixerAttributes` that can be used to set as preferred mixer attributes via `#setPreferredMixerAttributes( AudioAttributes, AudioDeviceInfo, AudioMixerAttributes)`.
GetVibrateSetting(VibrateType)	Obsolete. Returns whether the user's vibrate setting for a vibrate type.
GetVolumeGroupIdForAttributes(AudioAttributes)	Returns the volume group id associated to the given `AudioAttributes`.
IsOffloadedPlaybackSupported(AudioFormat, AudioAttributes)	Returns whether offloaded playback of an audio format is supported on the device.
IsStreamMute(Stream)	Returns the current mute state for a particular stream.
IsSurroundFormatEnabled(Int32)	Gets whether a certain surround format is enabled or not.
IsVolumeGroupMuted(Int32)	Returns the current mute state for a particular volume group associated to the given id.
JavaFinalize()	Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. (Inherited from Object)
LoadSoundEffects()	Load Sound effects.
LoadSoundEffectsAsync()
Notify()	Wakes up a single thread that is waiting on this object's monitor. (Inherited from Object)
NotifyAll()	Wakes up all threads that are waiting on this object's monitor. (Inherited from Object)
PlaySoundEffect(SoundEffect, Single)	Plays a sound effect (Key clicks, lid open/close.
PlaySoundEffect(SoundEffect)	Plays a sound effect (Key clicks, lid open/close.
RegisterAudioDeviceCallback(AudioDeviceCallback, Handler)	Registers an `AudioDeviceCallback` object to receive notifications of changes to the set of connected audio devices.
RegisterAudioPlaybackCallback(AudioManager+AudioPlaybackCallback, Handler)	Register a callback to be notified of audio playback changes through `AudioPlaybackCallback`
RegisterAudioRecordingCallback(AudioManager+AudioRecordingCallback, Handler)	Register a callback to be notified of audio recording changes through `AudioRecordingCallback`
RegisterMediaButtonEventReceiver(ComponentName)	Obsolete. Register a component to be the sole receiver of MEDIA_BUTTON intents.
RegisterMediaButtonEventReceiver(PendingIntent)	Obsolete. Register a component to be the sole receiver of MEDIA_BUTTON intents.
RegisterRemoteControlClient(RemoteControlClient)	Obsolete. Registers the remote control client for providing information to display on the remote controls.
RegisterRemoteController(RemoteController)	Obsolete. Registers a `RemoteController` instance for it to receive media metadata updates and playback state information from applications using `RemoteControlClient`, and control their playback.
RemoveOnCommunicationDeviceChangedListener(AudioManager+IOnCommunicationDeviceChangedListener)
RemoveOnModeChangedListener(AudioManager+IOnModeChangedListener)
RemoveOnPreferredMixerAttributesChangedListener(AudioManager+IOnPreferredMixerAttributesChangedListener)
RequestAudioFocus(AudioFocusRequestClass)	Request audio focus.
RequestAudioFocus(AudioManager+IOnAudioFocusChangeListener, Stream, AudioFocus)	Request audio focus.
SetCommunicationDevice(AudioDeviceInfo)	Selects the audio device that should be used for communication use cases, for instance voice or video calls.
SetEncodedSurroundMode(Int32)	Sets the surround sound mode.
SetHandle(IntPtr, JniHandleOwnership)	Sets the Handle property. (Inherited from Object)
SetParameters(String)	Sets a variable number of parameter values to audio hardware.
SetPreferredMixerAttributes(AudioAttributes, AudioDeviceInfo, AudioMixerAttributes)	Configures the mixer attributes for a particular `AudioAttributes` over a given `AudioDeviceInfo`.
SetRouting(Mode, Route, Route)	Obsolete. Sets the audio routing for a specified mode
SetStreamMute(Stream, Boolean)	Mute or unmute an audio stream.
SetStreamSolo(Stream, Boolean)	Solo or unsolo a particular stream.
SetStreamVolume(Stream, Int32, VolumeNotificationFlags)	Sets the volume index for a particular stream.
SetSurroundFormatEnabled(Int32, Boolean)	Sets and persists a certain surround format as enabled or not.
SetVibrateSetting(VibrateType, VibrateSetting)	Obsolete. Sets the setting for when the vibrate type should vibrate.
ShouldVibrate(VibrateType)	Obsolete. Returns whether a particular type should vibrate according to user settings and the current ringer mode.
StartBluetoothSco()	Start bluetooth SCO audio connection.
StopBluetoothSco()	Stop bluetooth SCO audio connection.
ToArray<T>()	(Inherited from Object)
ToString()	Returns a string representation of the object. (Inherited from Object)
UnloadSoundEffects()	Unload Sound effects.
UnregisterAudioDeviceCallback(AudioDeviceCallback)	Unregisters an `AudioDeviceCallback` object which has been previously registered to receive notifications of changes to the set of connected audio devices.
UnregisterAudioPlaybackCallback(AudioManager+AudioPlaybackCallback)	Unregister an audio playback callback previously registered with `#registerAudioPlaybackCallback(AudioPlaybackCallback, Handler)`.
UnregisterAudioRecordingCallback(AudioManager+AudioRecordingCallback)	Unregister an audio recording callback previously registered with `#registerAudioRecordingCallback(AudioRecordingCallback, Handler)`.
UnregisterFromRuntime()	(Inherited from Object)
UnregisterMediaButtonEventReceiver(ComponentName)	Obsolete. Unregister the receiver of MEDIA_BUTTON intents.
UnregisterMediaButtonEventReceiver(PendingIntent)	Obsolete. Unregister the receiver of MEDIA_BUTTON intents.
UnregisterRemoteControlClient(RemoteControlClient)	Obsolete. Unregisters the remote control client that was providing information to display on the remote controls.
UnregisterRemoteController(RemoteController)	Obsolete. Unregisters a `RemoteController`, causing it to no longer receive media metadata and playback state information, and no longer be capable of controlling playback.
Wait()	Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>. (Inherited from Object)
Wait(Int64, Int32)	Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>, or until a certain amount of real time has elapsed. (Inherited from Object)
Wait(Int64)	Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>, or until a certain amount of real time has elapsed. (Inherited from Object)

Explicit Interface Implementations

IJavaPeerable.Disposed()	(Inherited from Object)
IJavaPeerable.DisposeUnlessReferenced()	(Inherited from Object)
IJavaPeerable.Finalized()	(Inherited from Object)
IJavaPeerable.JniManagedPeerState	(Inherited from Object)
IJavaPeerable.SetJniIdentityHashCode(Int32)	(Inherited from Object)
IJavaPeerable.SetJniManagedPeerState(JniManagedPeerStates)	(Inherited from Object)
IJavaPeerable.SetPeerReference(JniObjectReference)	(Inherited from Object)

Extension Methods

JavaCast<TResult>(IJavaObject)	Performs an Android runtime-checked type conversion.
JavaCast<TResult>(IJavaObject)
GetJniTypeName(IJavaPeerable)

Applies to

Udostępnij za pośrednictwem