Android example source code file (AudioManager.java)
The AudioManager.java Android example source code/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.media;
import android.annotation.SdkConstant;
import android.annotation.SdkConstant.SdkConstantType;
import android.content.ComponentName;
import android.content.Context;
import android.database.ContentObserver;
import android.os.Binder;
import android.os.Handler;
import android.os.IBinder;
import android.os.Looper;
import android.os.Message;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.provider.Settings;
import android.util.Log;
import android.view.KeyEvent;
import java.util.Iterator;
import java.util.HashMap;
/**
* AudioManager provides access to volume and ringer mode control.
* <p>
* Use <code>Context.getSystemService(Context.AUDIO_SERVICE) to get
* an instance of this class.
*/
public class AudioManager {
private final Context mContext;
private final Handler mHandler;
private static String TAG = "AudioManager";
private static boolean DEBUG = false;
private static boolean localLOGV = DEBUG || android.util.Config.LOGV;
/**
* Broadcast intent, a hint for applications that audio is about to become
* 'noisy' due to a change in audio outputs. For example, this intent may
* be sent when a wired headset is unplugged, or when an A2DP audio
* sink is disconnected, and the audio system is about to automatically
* switch audio route to the speaker. Applications that are controlling
* audio streams may consider pausing, reducing volume or some other action
* on receipt of this intent so as not to surprise the user with audio
* from the speaker.
*/
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
public static final String ACTION_AUDIO_BECOMING_NOISY = "android.media.AUDIO_BECOMING_NOISY";
/**
* Sticky broadcast intent action indicating that the ringer mode has
* changed. Includes the new ringer mode.
*
* @see #EXTRA_RINGER_MODE
*/
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
public static final String RINGER_MODE_CHANGED_ACTION = "android.media.RINGER_MODE_CHANGED";
/**
* The new ringer mode.
*
* @see #RINGER_MODE_CHANGED_ACTION
* @see #RINGER_MODE_NORMAL
* @see #RINGER_MODE_SILENT
* @see #RINGER_MODE_VIBRATE
*/
public static final String EXTRA_RINGER_MODE = "android.media.EXTRA_RINGER_MODE";
/**
* Broadcast intent action indicating that the vibrate setting has
* changed. Includes the vibrate type and its new setting.
*
* @see #EXTRA_VIBRATE_TYPE
* @see #EXTRA_VIBRATE_SETTING
*/
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
public static final String VIBRATE_SETTING_CHANGED_ACTION = "android.media.VIBRATE_SETTING_CHANGED";
/**
* @hide Broadcast intent when the volume for a particular stream type changes.
* Includes the stream, the new volume and previous volumes
*
* @see #EXTRA_VOLUME_STREAM_TYPE
* @see #EXTRA_VOLUME_STREAM_VALUE
* @see #EXTRA_PREV_VOLUME_STREAM_VALUE
*/
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
public static final String VOLUME_CHANGED_ACTION = "android.media.VOLUME_CHANGED_ACTION";
/**
* The new vibrate setting for a particular type.
*
* @see #VIBRATE_SETTING_CHANGED_ACTION
* @see #EXTRA_VIBRATE_TYPE
* @see #VIBRATE_SETTING_ON
* @see #VIBRATE_SETTING_OFF
* @see #VIBRATE_SETTING_ONLY_SILENT
*/
public static final String EXTRA_VIBRATE_SETTING = "android.media.EXTRA_VIBRATE_SETTING";
/**
* The vibrate type whose setting has changed.
*
* @see #VIBRATE_SETTING_CHANGED_ACTION
* @see #VIBRATE_TYPE_NOTIFICATION
* @see #VIBRATE_TYPE_RINGER
*/
public static final String EXTRA_VIBRATE_TYPE = "android.media.EXTRA_VIBRATE_TYPE";
/**
* @hide The stream type for the volume changed intent.
*/
public static final String EXTRA_VOLUME_STREAM_TYPE = "android.media.EXTRA_VOLUME_STREAM_TYPE";
/**
* @hide The volume associated with the stream for the volume changed intent.
*/
public static final String EXTRA_VOLUME_STREAM_VALUE =
"android.media.EXTRA_VOLUME_STREAM_VALUE";
/**
* @hide The previous volume associated with the stream for the volume changed intent.
*/
public static final String EXTRA_PREV_VOLUME_STREAM_VALUE =
"android.media.EXTRA_PREV_VOLUME_STREAM_VALUE";
/** The audio stream for phone calls */
public static final int STREAM_VOICE_CALL = AudioSystem.STREAM_VOICE_CALL;
/** The audio stream for system sounds */
public static final int STREAM_SYSTEM = AudioSystem.STREAM_SYSTEM;
/** The audio stream for the phone ring */
public static final int STREAM_RING = AudioSystem.STREAM_RING;
/** The audio stream for music playback */
public static final int STREAM_MUSIC = AudioSystem.STREAM_MUSIC;
/** The audio stream for alarms */
public static final int STREAM_ALARM = AudioSystem.STREAM_ALARM;
/** The audio stream for notifications */
public static final int STREAM_NOTIFICATION = AudioSystem.STREAM_NOTIFICATION;
/** @hide The audio stream for phone calls when connected to bluetooth */
public static final int STREAM_BLUETOOTH_SCO = AudioSystem.STREAM_BLUETOOTH_SCO;
/** @hide The audio stream for enforced system sounds in certain countries (e.g camera in Japan) */
public static final int STREAM_SYSTEM_ENFORCED = AudioSystem.STREAM_SYSTEM_ENFORCED;
/** The audio stream for DTMF Tones */
public static final int STREAM_DTMF = AudioSystem.STREAM_DTMF;
/** @hide The audio stream for text to speech (TTS) */
public static final int STREAM_TTS = AudioSystem.STREAM_TTS;
/** Number of audio streams */
/**
* @deprecated Use AudioSystem.getNumStreamTypes() instead
*/
@Deprecated public static final int NUM_STREAMS = AudioSystem.NUM_STREAMS;
/** @hide Default volume index values for audio streams */
public static final int[] DEFAULT_STREAM_VOLUME = new int[] {
4, // STREAM_VOICE_CALL
7, // STREAM_SYSTEM
5, // STREAM_RING
11, // STREAM_MUSIC
6, // STREAM_ALARM
5, // STREAM_NOTIFICATION
7, // STREAM_BLUETOOTH_SCO
7, // STREAM_SYSTEM_ENFORCED
11, // STREAM_DTMF
11 // STREAM_TTS
};
/**
* Increase the ringer volume.
*
* @see #adjustVolume(int, int)
* @see #adjustStreamVolume(int, int, int)
*/
public static final int ADJUST_RAISE = 1;
/**
* Decrease the ringer volume.
*
* @see #adjustVolume(int, int)
* @see #adjustStreamVolume(int, int, int)
*/
public static final int ADJUST_LOWER = -1;
/**
* Maintain the previous ringer volume. This may be useful when needing to
* show the volume toast without actually modifying the volume.
*
* @see #adjustVolume(int, int)
* @see #adjustStreamVolume(int, int, int)
*/
public static final int ADJUST_SAME = 0;
// Flags should be powers of 2!
/**
* Show a toast containing the current volume.
*
* @see #adjustStreamVolume(int, int, int)
* @see #adjustVolume(int, int)
* @see #setStreamVolume(int, int, int)
* @see #setRingerMode(int)
*/
public static final int FLAG_SHOW_UI = 1 << 0;
/**
* Whether to include ringer modes as possible options when changing volume.
* For example, if true and volume level is 0 and the volume is adjusted
* with {@link #ADJUST_LOWER}, then the ringer mode may switch the silent or
* vibrate mode.
* <p>
* By default this is on for the ring stream. If this flag is included,
* this behavior will be present regardless of the stream type being
* affected by the ringer mode.
*
* @see #adjustVolume(int, int)
* @see #adjustStreamVolume(int, int, int)
*/
public static final int FLAG_ALLOW_RINGER_MODES = 1 << 1;
/**
* Whether to play a sound when changing the volume.
* <p>
* If this is given to {@link #adjustVolume(int, int)} or
* {@link #adjustSuggestedStreamVolume(int, int, int)}, it may be ignored
* in some cases (for example, the decided stream type is not
* {@link AudioManager#STREAM_RING}, or the volume is being adjusted
* downward).
*
* @see #adjustStreamVolume(int, int, int)
* @see #adjustVolume(int, int)
* @see #setStreamVolume(int, int, int)
*/
public static final int FLAG_PLAY_SOUND = 1 << 2;
/**
* Removes any sounds/vibrate that may be in the queue, or are playing (related to
* changing volume).
*/
public static final int FLAG_REMOVE_SOUND_AND_VIBRATE = 1 << 3;
/**
* Whether to vibrate if going into the vibrate ringer mode.
*/
public static final int FLAG_VIBRATE = 1 << 4;
/**
* Ringer mode that will be silent and will not vibrate. (This overrides the
* vibrate setting.)
*
* @see #setRingerMode(int)
* @see #getRingerMode()
*/
public static final int RINGER_MODE_SILENT = 0;
/**
* Ringer mode that will be silent and will vibrate. (This will cause the
* phone ringer to always vibrate, but the notification vibrate to only
* vibrate if set.)
*
* @see #setRingerMode(int)
* @see #getRingerMode()
*/
public static final int RINGER_MODE_VIBRATE = 1;
/**
* Ringer mode that may be audible and may vibrate. It will be audible if
* the volume before changing out of this mode was audible. It will vibrate
* if the vibrate setting is on.
*
* @see #setRingerMode(int)
* @see #getRingerMode()
*/
public static final int RINGER_MODE_NORMAL = 2;
/**
* Vibrate type that corresponds to the ringer.
*
* @see #setVibrateSetting(int, int)
* @see #getVibrateSetting(int)
* @see #shouldVibrate(int)
*/
public static final int VIBRATE_TYPE_RINGER = 0;
/**
* Vibrate type that corresponds to notifications.
*
* @see #setVibrateSetting(int, int)
* @see #getVibrateSetting(int)
* @see #shouldVibrate(int)
*/
public static final int VIBRATE_TYPE_NOTIFICATION = 1;
/**
* Vibrate setting that suggests to never vibrate.
*
* @see #setVibrateSetting(int, int)
* @see #getVibrateSetting(int)
*/
public static final int VIBRATE_SETTING_OFF = 0;
/**
* Vibrate setting that suggests to vibrate when possible.
*
* @see #setVibrateSetting(int, int)
* @see #getVibrateSetting(int)
*/
public static final int VIBRATE_SETTING_ON = 1;
/**
* Vibrate setting that suggests to only vibrate when in the vibrate ringer
* mode.
*
* @see #setVibrateSetting(int, int)
* @see #getVibrateSetting(int)
*/
public static final int VIBRATE_SETTING_ONLY_SILENT = 2;
/**
* Suggests using the default stream type. This may not be used in all
* places a stream type is needed.
*/
public static final int USE_DEFAULT_STREAM_TYPE = Integer.MIN_VALUE;
private static IAudioService sService;
/**
* @hide
*/
public AudioManager(Context context) {
mContext = context;
mHandler = new Handler(context.getMainLooper());
}
private static IAudioService getService()
{
if (sService != null) {
return sService;
}
IBinder b = ServiceManager.getService(Context.AUDIO_SERVICE);
sService = IAudioService.Stub.asInterface(b);
return sService;
}
/**
* Adjusts the volume of a particular stream by one step in a direction.
* <p>
* This method should only be used by applications that replace the platform-wide
* management of audio settings or the main telephony application.
*
* @param streamType The stream type to adjust. One of {@link #STREAM_VOICE_CALL},
* {@link #STREAM_SYSTEM}, {@link #STREAM_RING}, {@link #STREAM_MUSIC} or
* {@link #STREAM_ALARM}
* @param direction The direction to adjust the volume. One of
* {@link #ADJUST_LOWER}, {@link #ADJUST_RAISE}, or
* {@link #ADJUST_SAME}.
* @param flags One or more flags.
* @see #adjustVolume(int, int)
* @see #setStreamVolume(int, int, int)
*/
public void adjustStreamVolume(int streamType, int direction, int flags) {
IAudioService service = getService();
try {
service.adjustStreamVolume(streamType, direction, flags);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in adjustStreamVolume", e);
}
}
/**
* Adjusts the volume of the most relevant stream. For example, if a call is
* active, it will have the highest priority regardless of if the in-call
* screen is showing. Another example, if music is playing in the background
* and a call is not active, the music stream will be adjusted.
* <p>
* This method should only be used by applications that replace the platform-wide
* management of audio settings or the main telephony application.
*
* @param direction The direction to adjust the volume. One of
* {@link #ADJUST_LOWER}, {@link #ADJUST_RAISE}, or
* {@link #ADJUST_SAME}.
* @param flags One or more flags.
* @see #adjustSuggestedStreamVolume(int, int, int)
* @see #adjustStreamVolume(int, int, int)
* @see #setStreamVolume(int, int, int)
*/
public void adjustVolume(int direction, int flags) {
IAudioService service = getService();
try {
service.adjustVolume(direction, flags);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in adjustVolume", e);
}
}
/**
* Adjusts the volume of the most relevant stream, or the given fallback
* stream.
* <p>
* This method should only be used by applications that replace the platform-wide
* management of audio settings or the main telephony application.
*
* @param direction The direction to adjust the volume. One of
* {@link #ADJUST_LOWER}, {@link #ADJUST_RAISE}, or
* {@link #ADJUST_SAME}.
* @param suggestedStreamType The stream type that will be used if there
* isn't a relevant stream. {@link #USE_DEFAULT_STREAM_TYPE} is valid here.
* @param flags One or more flags.
* @see #adjustVolume(int, int)
* @see #adjustStreamVolume(int, int, int)
* @see #setStreamVolume(int, int, int)
*/
public void adjustSuggestedStreamVolume(int direction, int suggestedStreamType, int flags) {
IAudioService service = getService();
try {
service.adjustSuggestedStreamVolume(direction, suggestedStreamType, flags);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in adjustVolume", e);
}
}
/**
* Returns the current ringtone mode.
*
* @return The current ringtone mode, one of {@link #RINGER_MODE_NORMAL},
* {@link #RINGER_MODE_SILENT}, or {@link #RINGER_MODE_VIBRATE}.
* @see #setRingerMode(int)
*/
public int getRingerMode() {
IAudioService service = getService();
try {
return service.getRingerMode();
} catch (RemoteException e) {
Log.e(TAG, "Dead object in getRingerMode", e);
return RINGER_MODE_NORMAL;
}
}
/**
* Returns the maximum volume index for a particular stream.
*
* @param streamType The stream type whose maximum volume index is returned.
* @return The maximum valid volume index for the stream.
* @see #getStreamVolume(int)
*/
public int getStreamMaxVolume(int streamType) {
IAudioService service = getService();
try {
return service.getStreamMaxVolume(streamType);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in getStreamMaxVolume", e);
return 0;
}
}
/**
* Returns the current volume index for a particular stream.
*
* @param streamType The stream type whose volume index is returned.
* @return The current volume index for the stream.
* @see #getStreamMaxVolume(int)
* @see #setStreamVolume(int, int, int)
*/
public int getStreamVolume(int streamType) {
IAudioService service = getService();
try {
return service.getStreamVolume(streamType);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in getStreamVolume", e);
return 0;
}
}
/**
* Sets the ringer mode.
* <p>
* Silent mode will mute the volume and will not vibrate. Vibrate mode will
* mute the volume and vibrate. Normal mode will be audible and may vibrate
* according to user settings.
*
* @param ringerMode The ringer mode, one of {@link #RINGER_MODE_NORMAL},
* {@link #RINGER_MODE_SILENT}, or {@link #RINGER_MODE_VIBRATE}.
* @see #getRingerMode()
*/
public void setRingerMode(int ringerMode) {
IAudioService service = getService();
try {
service.setRingerMode(ringerMode);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in setRingerMode", e);
}
}
/**
* Sets the volume index for a particular stream.
*
* @param streamType The stream whose volume index should be set.
* @param index The volume index to set. See
* {@link #getStreamMaxVolume(int)} for the largest valid value.
* @param flags One or more flags.
* @see #getStreamMaxVolume(int)
* @see #getStreamVolume(int)
*/
public void setStreamVolume(int streamType, int index, int flags) {
IAudioService service = getService();
try {
service.setStreamVolume(streamType, index, flags);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in setStreamVolume", e);
}
}
/**
* Solo or unsolo a particular stream. All other streams are muted.
* <p>
* The solo command is protected against client process death: if a process
* with an active solo request on a stream dies, all streams that were muted
* because of this request will be unmuted automatically.
* <p>
* The solo requests for a given stream are cumulative: the AudioManager
* can receive several solo requests from one or more clients and the stream
* will be unsoloed only when the same number of unsolo requests are received.
* <p>
* For a better user experience, applications MUST unsolo a soloed stream
* in onPause() and solo is again in onResume() if appropriate.
*
* @param streamType The stream to be soloed/unsoloed.
* @param state The required solo state: true for solo ON, false for solo OFF
*/
public void setStreamSolo(int streamType, boolean state) {
IAudioService service = getService();
try {
service.setStreamSolo(streamType, state, mICallBack);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in setStreamSolo", e);
}
}
/**
* Mute or unmute an audio stream.
* <p>
* The mute command is protected against client process death: if a process
* with an active mute request on a stream dies, this stream will be unmuted
* automatically.
* <p>
* The mute requests for a given stream are cumulative: the AudioManager
* can receive several mute requests from one or more clients and the stream
* will be unmuted only when the same number of unmute requests are received.
* <p>
* For a better user experience, applications MUST unmute a muted stream
* in onPause() and mute is again in onResume() if appropriate.
* <p>
* This method should only be used by applications that replace the platform-wide
* management of audio settings or the main telephony application.
*
* @param streamType The stream to be muted/unmuted.
* @param state The required mute state: true for mute ON, false for mute OFF
*/
public void setStreamMute(int streamType, boolean state) {
IAudioService service = getService();
try {
service.setStreamMute(streamType, state, mICallBack);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in setStreamMute", e);
}
}
/**
* Returns whether a particular type should vibrate according to user
* settings and the current ringer mode.
* <p>
* This shouldn't be needed by most clients that use notifications to
* vibrate. The notification manager will not vibrate if the policy doesn't
* allow it, so the client should always set a vibrate pattern and let the
* notification manager control whether or not to actually vibrate.
*
* @param vibrateType The type of vibrate. One of
* {@link #VIBRATE_TYPE_NOTIFICATION} or
* {@link #VIBRATE_TYPE_RINGER}.
* @return Whether the type should vibrate at the instant this method is
* called.
* @see #setVibrateSetting(int, int)
* @see #getVibrateSetting(int)
*/
public boolean shouldVibrate(int vibrateType) {
IAudioService service = getService();
try {
return service.shouldVibrate(vibrateType);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in shouldVibrate", e);
return false;
}
}
/**
* Returns whether the user's vibrate setting for a vibrate type.
* <p>
* This shouldn't be needed by most clients that want to vibrate, instead
* see {@link #shouldVibrate(int)}.
*
* @param vibrateType The type of vibrate. One of
* {@link #VIBRATE_TYPE_NOTIFICATION} or
* {@link #VIBRATE_TYPE_RINGER}.
* @return The vibrate setting, one of {@link #VIBRATE_SETTING_ON},
* {@link #VIBRATE_SETTING_OFF}, or
* {@link #VIBRATE_SETTING_ONLY_SILENT}.
* @see #setVibrateSetting(int, int)
* @see #shouldVibrate(int)
*/
public int getVibrateSetting(int vibrateType) {
IAudioService service = getService();
try {
return service.getVibrateSetting(vibrateType);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in getVibrateSetting", e);
return VIBRATE_SETTING_OFF;
}
}
/**
* Sets the setting for when the vibrate type should vibrate.
* <p>
* This method should only be used by applications that replace the platform-wide
* management of audio settings or the main telephony application.
*
* @param vibrateType The type of vibrate. One of
* {@link #VIBRATE_TYPE_NOTIFICATION} or
* {@link #VIBRATE_TYPE_RINGER}.
* @param vibrateSetting The vibrate setting, one of
* {@link #VIBRATE_SETTING_ON},
* {@link #VIBRATE_SETTING_OFF}, or
* {@link #VIBRATE_SETTING_ONLY_SILENT}.
* @see #getVibrateSetting(int)
* @see #shouldVibrate(int)
*/
public void setVibrateSetting(int vibrateType, int vibrateSetting) {
IAudioService service = getService();
try {
service.setVibrateSetting(vibrateType, vibrateSetting);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in setVibrateSetting", e);
}
}
/**
* Sets the speakerphone on or off.
* <p>
* This method should only be used by applications that replace the platform-wide
* management of audio settings or the main telephony application.
*
* @param on set <var>true to turn on speakerphone;
* <var>false to turn it off
*/
public void setSpeakerphoneOn(boolean on){
IAudioService service = getService();
try {
service.setSpeakerphoneOn(on);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in setSpeakerphoneOn", e);
}
}
/**
* Checks whether the speakerphone is on or off.
*
* @return true if speakerphone is on, false if it's off
*/
public boolean isSpeakerphoneOn() {
IAudioService service = getService();
try {
return service.isSpeakerphoneOn();
} catch (RemoteException e) {
Log.e(TAG, "Dead object in isSpeakerphoneOn", e);
return false;
}
}
//====================================================================
// Bluetooth SCO control
/**
* Sticky broadcast intent action indicating that the bluetoooth SCO audio
* connection state has changed. The intent contains on extra {@link #EXTRA_SCO_AUDIO_STATE}
* indicating the new state which is either {@link #SCO_AUDIO_STATE_DISCONNECTED}
* or {@link #SCO_AUDIO_STATE_CONNECTED}
*
* @see #startBluetoothSco()
*/
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
public static final String ACTION_SCO_AUDIO_STATE_CHANGED =
"android.media.SCO_AUDIO_STATE_CHANGED";
/**
* Extra for intent {@link #ACTION_SCO_AUDIO_STATE_CHANGED} containing the new
* bluetooth SCO connection state.
*/
public static final String EXTRA_SCO_AUDIO_STATE =
"android.media.extra.SCO_AUDIO_STATE";
/**
* Value for extra {@link #EXTRA_SCO_AUDIO_STATE} indicating that the
* SCO audio channel is not established
*/
public static final int SCO_AUDIO_STATE_DISCONNECTED = 0;
/**
* Value for extra {@link #EXTRA_SCO_AUDIO_STATE} indicating that the
* SCO audio channel is established
*/
public static final int SCO_AUDIO_STATE_CONNECTED = 1;
/**
* Value for extra {@link #EXTRA_SCO_AUDIO_STATE} indicating that
* there was an error trying to obtain the state
*/
public static final int SCO_AUDIO_STATE_ERROR = -1;
/**
* Indicates if current platform supports use of SCO for off call use cases.
* Application wanted to use bluetooth SCO audio when the phone is not in call
* must first call thsi method to make sure that the platform supports this
* feature.
* @return true if bluetooth SCO can be used for audio when not in call
* false otherwise
* @see #startBluetoothSco()
*/
public boolean isBluetoothScoAvailableOffCall() {
return mContext.getResources().getBoolean(
com.android.internal.R.bool.config_bluetooth_sco_off_call);
}
/**
* Start bluetooth SCO audio connection.
* <p>Requires Permission:
* {@link android.Manifest.permission#MODIFY_AUDIO_SETTINGS}.
* <p>This method can be used by applications wanting to send and received audio
* to/from a bluetooth SCO headset while the phone is not in call.
* <p>As the SCO connection establishment can take several seconds,
* applications should not rely on the connection to be available when the method
* returns but instead register to receive the intent {@link #ACTION_SCO_AUDIO_STATE_CHANGED}
* and wait for the state to be {@link #SCO_AUDIO_STATE_CONNECTED}.
* <p>As the connection is not guaranteed to succeed, applications must wait for this intent with
* a timeout.
* <p>When finished with the SCO connection or if the establishment times out,
* the application must call {@link #stopBluetoothSco()} to clear the request and turn
* down the bluetooth connection.
* <p>Even if a SCO connection is established, the following restrictions apply on audio
* output streams so that they can be routed to SCO headset:
* - the stream type must be {@link #STREAM_VOICE_CALL}
* - the format must be mono
* - the sampling must be 16kHz or 8kHz
* <p>The following restrictions apply on input streams:
* - the format must be mono
* - the sampling must be 8kHz
*
* <p>Note that the phone application always has the priority on the usage of the SCO
* connection for telephony. If this method is called while the phone is in call
* it will be ignored. Similarly, if a call is received or sent while an application
* is using the SCO connection, the connection will be lost for the application and NOT
* returned automatically when the call ends.
* @see #stopBluetoothSco()
* @see #ACTION_SCO_AUDIO_STATE_CHANGED
*/
public void startBluetoothSco(){
IAudioService service = getService();
try {
service.startBluetoothSco(mICallBack);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in startBluetoothSco", e);
}
}
/**
* Stop bluetooth SCO audio connection.
* <p>Requires Permission:
* {@link android.Manifest.permission#MODIFY_AUDIO_SETTINGS}.
* <p>This method must be called by applications having requested the use of
* bluetooth SCO audio with {@link #startBluetoothSco()}
* when finished with the SCO connection or if the establishment times out.
* @see #startBluetoothSco()
*/
public void stopBluetoothSco(){
IAudioService service = getService();
try {
service.stopBluetoothSco(mICallBack);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in stopBluetoothSco", e);
}
}
/**
* Request use of Bluetooth SCO headset for communications.
* <p>
* This method should only be used by applications that replace the platform-wide
* management of audio settings or the main telephony application.
*
* @param on set <var>true to use bluetooth SCO for communications;
* <var>false to not use bluetooth SCO for communications
*/
public void setBluetoothScoOn(boolean on){
IAudioService service = getService();
try {
service.setBluetoothScoOn(on);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in setBluetoothScoOn", e);
}
}
/**
* Checks whether communications use Bluetooth SCO.
*
* @return true if SCO is used for communications;
* false if otherwise
*/
public boolean isBluetoothScoOn() {
IAudioService service = getService();
try {
return service.isBluetoothScoOn();
} catch (RemoteException e) {
Log.e(TAG, "Dead object in isBluetoothScoOn", e);
return false;
}
}
/**
* @param on set <var>true to route A2DP audio to/from Bluetooth
* headset; <var>false disable A2DP audio
* @deprecated Do not use.
*/
@Deprecated public void setBluetoothA2dpOn(boolean on){
}
/**
* Checks whether A2DP audio routing to the Bluetooth headset is on or off.
*
* @return true if A2DP audio is being routed to/from Bluetooth headset;
* false if otherwise
*/
public boolean isBluetoothA2dpOn() {
if (AudioSystem.getDeviceConnectionState(AudioSystem.DEVICE_OUT_BLUETOOTH_A2DP,"")
== AudioSystem.DEVICE_STATE_UNAVAILABLE) {
return false;
} else {
return true;
}
}
/**
* Sets audio routing to the wired headset on or off.
*
* @param on set <var>true to route audio to/from wired
* headset; <var>false disable wired headset audio
* @deprecated Do not use.
*/
@Deprecated public void setWiredHeadsetOn(boolean on){
}
/**
* Checks whether audio routing to the wired headset is on or off.
*
* @return true if audio is being routed to/from wired headset;
* false if otherwise
*/
public boolean isWiredHeadsetOn() {
if (AudioSystem.getDeviceConnectionState(AudioSystem.DEVICE_OUT_WIRED_HEADSET,"")
== AudioSystem.DEVICE_STATE_UNAVAILABLE &&
AudioSystem.getDeviceConnectionState(AudioSystem.DEVICE_OUT_WIRED_HEADPHONE,"")
== AudioSystem.DEVICE_STATE_UNAVAILABLE) {
return false;
} else {
return true;
}
}
/**
* Sets the microphone mute on or off.
* <p>
* This method should only be used by applications that replace the platform-wide
* management of audio settings or the main telephony application.
*
* @param on set <var>true to mute the microphone;
* <var>false to turn mute off
*/
public void setMicrophoneMute(boolean on){
AudioSystem.muteMicrophone(on);
}
/**
* Checks whether the microphone mute is on or off.
*
* @return true if microphone is muted, false if it's not
*/
public boolean isMicrophoneMute() {
return AudioSystem.isMicrophoneMuted();
}
/**
* Sets the audio mode.
* <p>
* The audio mode encompasses audio routing AND the behavior of
* the telephony layer. Therefore this method should only be used by applications that
* replace the platform-wide management of audio settings or the main telephony application.
* In particular, the {@link #MODE_IN_CALL} mode should only be used by the telephony
* application when it places a phone call, as it will cause signals from the radio layer
* to feed the platform mixer.
*
* @param mode the requested audio mode (NORMAL, RINGTONE, or IN_CALL).
* Informs the HAL about the current audio state so that
* it can route the audio appropriately.
*/
public void setMode(int mode) {
IAudioService service = getService();
try {
service.setMode(mode, mICallBack);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in setMode", e);
}
}
/**
* Returns the current audio mode.
*
* @return the current audio mode (NORMAL, RINGTONE, or IN_CALL).
* Returns the current current audio state from the HAL.
*/
public int getMode() {
IAudioService service = getService();
try {
return service.getMode();
} catch (RemoteException e) {
Log.e(TAG, "Dead object in getMode", e);
return MODE_INVALID;
}
}
/* modes for setMode/getMode/setRoute/getRoute */
/**
* Audio harware modes.
*/
/**
* Invalid audio mode.
*/
public static final int MODE_INVALID = AudioSystem.MODE_INVALID;
/**
* Current audio mode. Used to apply audio routing to current mode.
*/
public static final int MODE_CURRENT = AudioSystem.MODE_CURRENT;
/**
* Normal audio mode: not ringing and no call established.
*/
public static final int MODE_NORMAL = AudioSystem.MODE_NORMAL;
/**
* Ringing audio mode. An incoming is being signaled.
*/
public static final int MODE_RINGTONE = AudioSystem.MODE_RINGTONE;
/**
* In call audio mode. A call is established.
*/
public static final int MODE_IN_CALL = AudioSystem.MODE_IN_CALL;
/* Routing bits for setRouting/getRouting API */
/**
* Routing audio output to earpiece
* @deprecated Do not set audio routing directly, use setSpeakerphoneOn(),
* setBluetoothScoOn() methods instead.
*/
@Deprecated public static final int ROUTE_EARPIECE = AudioSystem.ROUTE_EARPIECE;
/**
* Routing audio output to speaker
* @deprecated Do not set audio routing directly, use setSpeakerphoneOn(),
* setBluetoothScoOn() methods instead.
*/
@Deprecated public static final int ROUTE_SPEAKER = AudioSystem.ROUTE_SPEAKER;
/**
* @deprecated use {@link #ROUTE_BLUETOOTH_SCO}
* @deprecated Do not set audio routing directly, use setSpeakerphoneOn(),
* setBluetoothScoOn() methods instead.
*/
@Deprecated public static final int ROUTE_BLUETOOTH = AudioSystem.ROUTE_BLUETOOTH_SCO;
/**
* Routing audio output to bluetooth SCO
* @deprecated Do not set audio routing directly, use setSpeakerphoneOn(),
* setBluetoothScoOn() methods instead.
*/
@Deprecated public static final int ROUTE_BLUETOOTH_SCO = AudioSystem.ROUTE_BLUETOOTH_SCO;
/**
* Routing audio output to headset
* @deprecated Do not set audio routing directly, use setSpeakerphoneOn(),
* setBluetoothScoOn() methods instead.
*/
@Deprecated public static final int ROUTE_HEADSET = AudioSystem.ROUTE_HEADSET;
/**
* Routing audio output to bluetooth A2DP
* @deprecated Do not set audio routing directly, use setSpeakerphoneOn(),
* setBluetoothScoOn() methods instead.
*/
@Deprecated public static final int ROUTE_BLUETOOTH_A2DP = AudioSystem.ROUTE_BLUETOOTH_A2DP;
/**
* Used for mask parameter of {@link #setRouting(int,int,int)}.
* @deprecated Do not set audio routing directly, use setSpeakerphoneOn(),
* setBluetoothScoOn() methods instead.
*/
@Deprecated public static final int ROUTE_ALL = AudioSystem.ROUTE_ALL;
/**
* Sets the audio routing for a specified mode
*
* @param mode audio mode to change route. E.g., MODE_RINGTONE.
* @param routes bit vector of routes requested, created from one or
* more of ROUTE_xxx types. Set bits indicate that route should be on
* @param mask bit vector of routes to change, created from one or more of
* ROUTE_xxx types. Unset bits indicate the route should be left unchanged
*
* @deprecated Do not set audio routing directly, use setSpeakerphoneOn(),
* setBluetoothScoOn() methods instead.
*/
@Deprecated
public void setRouting(int mode, int routes, int mask) {
}
/**
* Returns the current audio routing bit vector for a specified mode.
*
* @param mode audio mode to get route (e.g., MODE_RINGTONE)
* @return an audio route bit vector that can be compared with ROUTE_xxx
* bits
* @deprecated Do not query audio routing directly, use isSpeakerphoneOn(),
* isBluetoothScoOn(), isBluetoothA2dpOn() and isWiredHeadsetOn() methods instead.
*/
@Deprecated
public int getRouting(int mode) {
return -1;
}
/**
* Checks whether any music is active.
*
* @return true if any music tracks are active.
*/
public boolean isMusicActive() {
return AudioSystem.isStreamActive(STREAM_MUSIC);
}
/*
* Sets a generic audio configuration parameter. The use of these parameters
* are platform dependant, see libaudio
*
* ** Temporary interface - DO NOT USE
*
* TODO: Replace with a more generic key:value get/set mechanism
*
* param key name of parameter to set. Must not be null.
* param value value of parameter. Must not be null.
*/
/**
* @hide
* @deprecated Use {@link #setPrameters(String)} instead
*/
@Deprecated public void setParameter(String key, String value) {
setParameters(key+"="+value);
}
/**
* Sets a variable number of parameter values to audio hardware.
*
* @param keyValuePairs list of parameters key value pairs in the form:
* key1=value1;key2=value2;...
*
*/
public void setParameters(String keyValuePairs) {
AudioSystem.setParameters(keyValuePairs);
}
/**
* Sets a varaible number of parameter values to audio hardware.
*
* @param keys list of parameters
* @return list of parameters key value pairs in the form:
* key1=value1;key2=value2;...
*/
public String getParameters(String keys) {
return AudioSystem.getParameters(keys);
}
/* Sound effect identifiers */
/**
* Keyboard and direction pad click sound
* @see #playSoundEffect(int)
*/
public static final int FX_KEY_CLICK = 0;
/**
* Focus has moved up
* @see #playSoundEffect(int)
*/
public static final int FX_FOCUS_NAVIGATION_UP = 1;
/**
* Focus has moved down
* @see #playSoundEffect(int)
*/
public static final int FX_FOCUS_NAVIGATION_DOWN = 2;
/**
* Focus has moved left
* @see #playSoundEffect(int)
*/
public static final int FX_FOCUS_NAVIGATION_LEFT = 3;
/**
* Focus has moved right
* @see #playSoundEffect(int)
*/
public static final int FX_FOCUS_NAVIGATION_RIGHT = 4;
/**
* IME standard keypress sound
* @see #playSoundEffect(int)
*/
public static final int FX_KEYPRESS_STANDARD = 5;
/**
* IME spacebar keypress sound
* @see #playSoundEffect(int)
*/
public static final int FX_KEYPRESS_SPACEBAR = 6;
/**
* IME delete keypress sound
* @see #playSoundEffect(int)
*/
public static final int FX_KEYPRESS_DELETE = 7;
/**
* IME return_keypress sound
* @see #playSoundEffect(int)
*/
public static final int FX_KEYPRESS_RETURN = 8;
/**
* @hide Number of sound effects
*/
public static final int NUM_SOUND_EFFECTS = 9;
/**
* Plays a sound effect (Key clicks, lid open/close...)
* @param effectType The type of sound effect. One of
* {@link #FX_KEY_CLICK},
* {@link #FX_FOCUS_NAVIGATION_UP},
* {@link #FX_FOCUS_NAVIGATION_DOWN},
* {@link #FX_FOCUS_NAVIGATION_LEFT},
* {@link #FX_FOCUS_NAVIGATION_RIGHT},
* {@link #FX_KEYPRESS_STANDARD},
* {@link #FX_KEYPRESS_SPACEBAR},
* {@link #FX_KEYPRESS_DELETE},
* {@link #FX_KEYPRESS_RETURN},
* NOTE: This version uses the UI settings to determine
* whether sounds are heard or not.
*/
public void playSoundEffect(int effectType) {
if (effectType < 0 || effectType >= NUM_SOUND_EFFECTS) {
return;
}
if (!querySoundEffectsEnabled()) {
return;
}
IAudioService service = getService();
try {
service.playSoundEffect(effectType);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in playSoundEffect"+e);
}
}
/**
* Plays a sound effect (Key clicks, lid open/close...)
* @param effectType The type of sound effect. One of
* {@link #FX_KEY_CLICK},
* {@link #FX_FOCUS_NAVIGATION_UP},
* {@link #FX_FOCUS_NAVIGATION_DOWN},
* {@link #FX_FOCUS_NAVIGATION_LEFT},
* {@link #FX_FOCUS_NAVIGATION_RIGHT},
* {@link #FX_KEYPRESS_STANDARD},
* {@link #FX_KEYPRESS_SPACEBAR},
* {@link #FX_KEYPRESS_DELETE},
* {@link #FX_KEYPRESS_RETURN},
* @param volume Sound effect volume.
* The volume value is a raw scalar so UI controls should be scaled logarithmically.
* If a volume of -1 is specified, the AudioManager.STREAM_MUSIC stream volume minus 3dB will be used.
* NOTE: This version is for applications that have their own
* settings panel for enabling and controlling volume.
*/
public void playSoundEffect(int effectType, float volume) {
if (effectType < 0 || effectType >= NUM_SOUND_EFFECTS) {
return;
}
IAudioService service = getService();
try {
service.playSoundEffectVolume(effectType, volume);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in playSoundEffect"+e);
}
}
/**
* Settings has an in memory cache, so this is fast.
*/
private boolean querySoundEffectsEnabled() {
return Settings.System.getInt(mContext.getContentResolver(), Settings.System.SOUND_EFFECTS_ENABLED, 0) != 0;
}
/**
* Load Sound effects.
* This method must be called when sound effects are enabled.
*/
public void loadSoundEffects() {
IAudioService service = getService();
try {
service.loadSoundEffects();
} catch (RemoteException e) {
Log.e(TAG, "Dead object in loadSoundEffects"+e);
}
}
/**
* Unload Sound effects.
* This method can be called to free some memory when
* sound effects are disabled.
*/
public void unloadSoundEffects() {
IAudioService service = getService();
try {
service.unloadSoundEffects();
} catch (RemoteException e) {
Log.e(TAG, "Dead object in unloadSoundEffects"+e);
}
}
/**
* Used to indicate a gain of audio focus, or a request of audio focus, of unknown duration.
* @see OnAudioFocusChangeListener#onAudioFocusChange(int)
* @see #requestAudioFocus(OnAudioFocusChangeListener, int, int)
*/
public static final int AUDIOFOCUS_GAIN = 1;
/**
* 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.
* @see OnAudioFocusChangeListener#onAudioFocusChange(int)
* @see #requestAudioFocus(OnAudioFocusChangeListener, int, int)
*/
public static final int AUDIOFOCUS_GAIN_TRANSIENT = 2;
/**
* 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.
* @see OnAudioFocusChangeListener#onAudioFocusChange(int)
* @see #requestAudioFocus(OnAudioFocusChangeListener, int, int)
*/
public static final int AUDIOFOCUS_GAIN_TRANSIENT_MAY_DUCK = 3;
/**
* Used to indicate a loss of audio focus of unknown duration.
* @see OnAudioFocusChangeListener#onAudioFocusChange(int)
*/
public static final int AUDIOFOCUS_LOSS = -1 * AUDIOFOCUS_GAIN;
/**
* Used to indicate a transient loss of audio focus.
* @see OnAudioFocusChangeListener#onAudioFocusChange(int)
*/
public static final int AUDIOFOCUS_LOSS_TRANSIENT = -1 * AUDIOFOCUS_GAIN_TRANSIENT;
/**
* 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.
* @see OnAudioFocusChangeListener#onAudioFocusChange(int)
*/
public static final int AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK =
-1 * AUDIOFOCUS_GAIN_TRANSIENT_MAY_DUCK;
/**
* Interface definition for a callback to be invoked when the audio focus of the system is
* updated.
*/
public interface OnAudioFocusChangeListener {
/**
* Called on the listener to notify it the audio focus for this listener has been changed.
* The focusChange value indicates whether the focus was gained,
* whether the focus was lost, and whether that loss is transient, or whether the new focus
* holder will hold it for an unknown amount of time.
* When losing focus, listeners can use the focus change information to decide what
* behavior to adopt when losing focus. A music player could for instance elect to lower
* the volume of its music stream (duck) for transient focus losses, and pause otherwise.
* @param focusChange the type of focus change, one of {@link AudioManager#AUDIOFOCUS_GAIN},
* {@link AudioManager#AUDIOFOCUS_LOSS}, {@link AudioManager#AUDIOFOCUS_LOSS_TRANSIENT}
* and {@link AudioManager#AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK}.
*/
public void onAudioFocusChange(int focusChange);
}
/**
* Map to convert focus event listener IDs, as used in the AudioService audio focus stack,
* to actual listener objects.
*/
private HashMap<String, OnAudioFocusChangeListener> mAudioFocusIdListenerMap =
new HashMap<String, OnAudioFocusChangeListener>();
/**
* Lock to prevent concurrent changes to the list of focus listeners for this AudioManager
* instance.
*/
private final Object mFocusListenerLock = new Object();
private OnAudioFocusChangeListener findFocusListener(String id) {
return mAudioFocusIdListenerMap.get(id);
}
/**
* Handler for audio focus events coming from the audio service.
*/
private FocusEventHandlerDelegate mAudioFocusEventHandlerDelegate =
new FocusEventHandlerDelegate();
/**
* Helper class to handle the forwarding of audio focus events to the appropriate listener
*/
private class FocusEventHandlerDelegate {
private final Handler mHandler;
FocusEventHandlerDelegate() {
Looper looper;
if ((looper = Looper.myLooper()) == null) {
looper = Looper.getMainLooper();
}
if (looper != null) {
// implement the event handler delegate to receive audio focus events
mHandler = new Handler(looper) {
@Override
public void handleMessage(Message msg) {
OnAudioFocusChangeListener listener = null;
synchronized(mFocusListenerLock) {
listener = findFocusListener((String)msg.obj);
}
if (listener != null) {
listener.onAudioFocusChange(msg.what);
}
}
};
} else {
mHandler = null;
}
}
Handler getHandler() {
return mHandler;
}
}
private IAudioFocusDispatcher mAudioFocusDispatcher = new IAudioFocusDispatcher.Stub() {
public void dispatchAudioFocusChange(int focusChange, String id) {
Message m = mAudioFocusEventHandlerDelegate.getHandler().obtainMessage(focusChange, id);
mAudioFocusEventHandlerDelegate.getHandler().sendMessage(m);
}
};
private String getIdForAudioFocusListener(OnAudioFocusChangeListener l) {
if (l == null) {
return new String(this.toString());
} else {
return new String(this.toString() + l.toString());
}
}
/**
* @hide
* Registers a listener to be called when audio focus changes. Calling this method is optional
* before calling {@link #requestAudioFocus(OnAudioFocusChangeListener, int, int)}, as it
* will register the listener as well if it wasn't registered already.
* @param l the listener to be notified of audio focus changes.
*/
public void registerAudioFocusListener(OnAudioFocusChangeListener l) {
synchronized(mFocusListenerLock) {
if (mAudioFocusIdListenerMap.containsKey(getIdForAudioFocusListener(l))) {
return;
}
mAudioFocusIdListenerMap.put(getIdForAudioFocusListener(l), l);
}
}
/**
* @hide
* Causes the specified listener to not be called anymore when focus is gained or lost.
* @param l the listener to unregister.
*/
public void unregisterAudioFocusListener(OnAudioFocusChangeListener l) {
// remove locally
synchronized(mFocusListenerLock) {
mAudioFocusIdListenerMap.remove(getIdForAudioFocusListener(l));
}
}
/**
* A failed focus change request.
*/
public static final int AUDIOFOCUS_REQUEST_FAILED = 0;
/**
* A successful focus change request.
*/
public static final int AUDIOFOCUS_REQUEST_GRANTED = 1;
/**
* Request audio focus.
* Send a request to obtain the audio focus
* @param l the listener to be notified of audio focus changes
* @param streamType the main audio stream type affected by the focus request
* @param durationHint use {@link #AUDIOFOCUS_GAIN_TRANSIENT} to indicate this focus request
* is temporary, and focus will be abandonned shortly. Examples of transient requests are
* for the playback of driving directions, or notifications sounds.
* Use {@link #AUDIOFOCUS_GAIN_TRANSIENT_MAY_DUCK} to indicate also that it's ok for
* the previous focus owner to keep playing if it ducks its audio output.
* Use {@link #AUDIOFOCUS_GAIN} for a focus request of unknown duration such
* as the playback of a song or a video.
* @return {@link #AUDIOFOCUS_REQUEST_FAILED} or {@link #AUDIOFOCUS_REQUEST_GRANTED}
*/
public int requestAudioFocus(OnAudioFocusChangeListener l, int streamType, int durationHint) {
int status = AUDIOFOCUS_REQUEST_FAILED;
if ((durationHint < AUDIOFOCUS_GAIN) || (durationHint > AUDIOFOCUS_GAIN_TRANSIENT_MAY_DUCK))
{
Log.e(TAG, "Invalid duration hint, audio focus request denied");
return status;
}
registerAudioFocusListener(l);
//TODO protect request by permission check?
IAudioService service = getService();
try {
status = service.requestAudioFocus(streamType, durationHint, mICallBack,
mAudioFocusDispatcher, getIdForAudioFocusListener(l));
} catch (RemoteException e) {
Log.e(TAG, "Can't call requestAudioFocus() from AudioService due to "+e);
}
return status;
}
/**
* Abandon audio focus. Causes the previous focus owner, if any, to receive focus.
* @param l the listener with which focus was requested.
* @return {@link #AUDIOFOCUS_REQUEST_FAILED} or {@link #AUDIOFOCUS_REQUEST_GRANTED}
*/
public int abandonAudioFocus(OnAudioFocusChangeListener l) {
int status = AUDIOFOCUS_REQUEST_FAILED;
unregisterAudioFocusListener(l);
IAudioService service = getService();
try {
status = service.abandonAudioFocus(mAudioFocusDispatcher,
getIdForAudioFocusListener(l));
} catch (RemoteException e) {
Log.e(TAG, "Can't call abandonAudioFocus() from AudioService due to "+e);
}
return status;
}
//====================================================================
// Remote Control
/**
* Register a component to be the sole receiver of MEDIA_BUTTON intents.
* @param eventReceiver identifier of a {@link android.content.BroadcastReceiver}
* that will receive the media button intent. This broadcast receiver must be declared
* in the application manifest.
*/
public void registerMediaButtonEventReceiver(ComponentName eventReceiver) {
//TODO enforce the rule about the receiver being declared in the manifest
IAudioService service = getService();
try {
service.registerMediaButtonEventReceiver(eventReceiver);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in registerMediaButtonEventReceiver"+e);
}
}
/**
* Unregister the receiver of MEDIA_BUTTON intents.
* @param eventReceiver identifier of a {@link android.content.BroadcastReceiver}
* that was registered with {@link #registerMediaButtonEventReceiver(ComponentName)}.
*/
public void unregisterMediaButtonEventReceiver(ComponentName eventReceiver) {
IAudioService service = getService();
try {
service.unregisterMediaButtonEventReceiver(eventReceiver);
} catch (RemoteException e) {
Log.e(TAG, "Dead object in unregisterMediaButtonEventReceiver"+e);
}
}
/**
* @hide
* Reload audio settings. This method is called by Settings backup
* agent when audio settings are restored and causes the AudioService
* to read and apply restored settings.
*/
public void reloadAudioSettings() {
IAudioService service = getService();
try {
service.reloadAudioSettings();
} catch (RemoteException e) {
Log.e(TAG, "Dead object in reloadAudioSettings"+e);
}
}
/**
* {@hide}
*/
private IBinder mICallBack = new Binder();
}
Other Android examples (source code examples)Here is a short list of links related to this Android AudioManager.java source code file: |
The search page
Other Android source code examples at this package level
Click here to learn more about this project
