Android获取音频输入输出设备信息

获取音频输入设备

AudioManager mAudioManager = (AudioManager) mContext.getSystemService(Context.AUDIO_SERVICE);
AudioDeviceInfo[] infos = mAudioManager.getDevices(AudioManager.GET_DEVICES_INPUTS);

获取音频输出设备

AudioManager mAudioManager = (AudioManager) mContext.getSystemService(Context.AUDIO_SERVICE);
AudioDeviceInfo[] infos = mAudioManager.getDevices(AudioManager.GET_DEVICES_OUTPUTS);

AudioDeviceInfo对象就是包含了相关信息，可以通过一下方法进行判断 AudioDeviceInfo.getType() == AudioDeviceInfo.TYPE_***_DEVICE

相关常量

android.media.AudioDeviceInfo

/**
     * A device type associated with an unknown or uninitialized device.
     */
    public static final int TYPE_UNKNOWN          = 0;
    /**
     * A device type describing the attached earphone speaker.
     */
    public static final int TYPE_BUILTIN_EARPIECE = 1;
    /**
     * A device type describing the speaker system (i.e. a mono speaker or stereo speakers) built
     * in a device.
     */
    public static final int TYPE_BUILTIN_SPEAKER  = 2;
    /**
     * A device type describing a headset, which is the combination of a headphones and microphone.
     */
    public static final int TYPE_WIRED_HEADSET    = 3;
    /**
     * A device type describing a pair of wired headphones.
     */
    public static final int TYPE_WIRED_HEADPHONES = 4;
    /**
     * A device type describing an analog line-level connection.
     */
    public static final int TYPE_LINE_ANALOG      = 5;
    /**
     * A device type describing a digital line connection (e.g. SPDIF).
     */
    public static final int TYPE_LINE_DIGITAL     = 6;
    /**
     * A device type describing a Bluetooth device typically used for telephony.
     */
    public static final int TYPE_BLUETOOTH_SCO    = 7;
    /**
     * A device type describing a Bluetooth device supporting the A2DP profile.
     */
    public static final int TYPE_BLUETOOTH_A2DP   = 8;
    /**
     * A device type describing an HDMI connection .
     */
    public static final int TYPE_HDMI             = 9;
    /**
     * A device type describing the Audio Return Channel of an HDMI connection.
     */
    public static final int TYPE_HDMI_ARC         = 10;
    /**
     * A device type describing a USB audio device.
     */
    public static final int TYPE_USB_DEVICE       = 11;
    /**
     * A device type describing a USB audio device in accessory mode.
     */
    public static final int TYPE_USB_ACCESSORY    = 12;
    /**
     * A device type describing the audio device associated with a dock.
     */
    public static final int TYPE_DOCK             = 13;
    /**
     * A device type associated with the transmission of audio signals over FM.
     */
    public static final int TYPE_FM               = 14;
    /**
     * A device type describing the microphone(s) built in a device.
     */
    public static final int TYPE_BUILTIN_MIC      = 15;
    /**
     * A device type for accessing the audio content transmitted over FM.
     */
    public static final int TYPE_FM_TUNER         = 16;
    /**
     * A device type for accessing the audio content transmitted over the TV tuner system.
     */
    public static final int TYPE_TV_TUNER         = 17;
    /**
     * A device type describing the transmission of audio signals over the telephony network.
     */
    public static final int TYPE_TELEPHONY        = 18;
    /**
     * A device type describing the auxiliary line-level connectors.
     */
    public static final int TYPE_AUX_LINE         = 19;
    /**
     * A device type connected over IP.
     */
    public static final int TYPE_IP               = 20;
    /**
     * A type-agnostic device used for communication with external audio systems
     */
    public static final int TYPE_BUS              = 21;
    /**
     * A device type describing a USB audio headset.
     */
    public static final int TYPE_USB_HEADSET       = 22;
    /**
     * A device type describing a Hearing Aid.
     */
    public static final int TYPE_HEARING_AID   = 23;
    /**
     * A device type describing the speaker system (i.e. a mono speaker or stereo speakers) built
     * in a device, that is specifically tuned for outputting sounds like notifications and alarms
     * (i.e. sounds the user couldn't necessarily anticipate).
     * 
Note that this physical audio device may be the same as {@link #TYPE_BUILTIN_SPEAKER}
     * but is driven differently to safely accommodate the different use case.
     */
    public static final int TYPE_BUILTIN_SPEAKER_SAFE = 24;
    /**
     * @hide
     * A device type for rerouting audio within the Android framework between mixes and
     * system applications. Typically created when using
     * {@link android.media.audiopolicy.AudioPolicy} for mixes created with the
     * {@link android.media.audiopolicy.AudioMix#ROUTE_FLAG_RENDER} flag.
     */
    @SystemApi
    public static final int TYPE_REMOTE_SUBMIX = 25;