Android:应设置什么音频模式以在设备之间发送接收语音

Question

我正在尝试在两个Android设备平板电脑和移动设备(通过Java套接字)之间传输语音/音频(双向).

平板电脑可以清晰播放收到的音频(语音),但手机播放的音频是噪音.
然后我在平板电脑上的代码中设置此音频模式:
audioManager.setMode(AudioManager.MODE_IN_CALL);

这导致移动接收清晰的语音.但平板电脑变得沉默,它不会播放收到的音频(或者说它听不到).

我不确定我应该在这里使用哪种AudioManager模式组合(如果有的话)？

Answer 1

可以将您想要播放的声音处理为Alarm.

创建一个名为的新类AlarmController并尝试此代码。

这对我在 Android 4.4.2（华为 ascend P7）上有效，每个系统音量（媒体、铃声、闹钟）设置为 0。

Context context;
MediaPlayer mp;
AudioManager mAudioManager;
int userVolume;


public AlarmController(Context c) { // constructor for my alarm controller class
    this.context = c;
    mAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);

    //remeber what the user's volume was set to before we change it.
     userVolume = mAudioManager.getStreamVolume(AudioManager.STREAM_ALARM);

     mp = new MediaPlayer();
}

public void playSound(String soundURI){

    Uri alarmSound = null;
    Uri ringtoneUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_RINGTONE);

    try{
        alarmSound = Uri.parse(soundURI);
    }catch(Exception e){
        alarmSound = ringtoneUri;
    }
    finally{
        if(alarmSound == null){
            alarmSound = ringtoneUri;
        }
    }



    try {

        if(!mp.isPlaying()){
        mp.setDataSource(context, alarmSound);
        mp.setAudioStreamType(AudioManager.STREAM_ALARM);
        mp.setLooping(true);
        mp.prepare();
        mp.start();
        }


    } catch (IOException e) {
        Toast.makeText(context, "Your alarm sound was unavailable.", Toast.LENGTH_LONG).show();

    }
    // set the volume to what we want it to be.  In this case it's max volume for the alarm stream.
   mAudioManager.setStreamVolume(AudioManager.STREAM_ALARM, mAudioManager.getStreamMaxVolume(AudioManager.STREAM_ALARM), AudioManager.FLAG_PLAY_SOUND);

}

public void stopSound(){
// reset the volume to what it was before we changed it.
    mAudioManager.setStreamVolume(AudioManager.STREAM_ALARM, userVolume, AudioManager.FLAG_PLAY_SOUND);
    mp.stop();
   mp.reset();

}

public void releasePlayer(){
    mp.release();
}

我希望这对你有用。:)