android 麦克风录音输出

添加权限

一、录音（存文件）输出

1、录音至本地文件

import android.media.MediaRecorder;
import android.util.Log;

import java.io.File;
import java.io.IOException;


public class MicrophoneRecording {
    private static final String TAG = "MicrophoneRecording";
    private MediaRecorder mRecorder;
    private File audioFile;

    public void startRecording() {
        mRecorder = new MediaRecorder();
        mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
        mRecorder.setOutputFormat(MediaRecorder.OutputFormat.DEFAULT);
        mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);
        try {
            audioFile = File.createTempFile("recording", ".amr");
            mRecorder.setOutputFile(audioFile.getAbsolutePath());
            mRecorder.prepare();
            Log.d(TAG, "startRecording");
        } catch (IOException e) {
            e.printStackTrace();
        }
        mRecorder.start();

    }

    public String getAudioFile() {
        return this.audioFile.getAbsolutePath();
    }

    public void stopRecording() {
        if (mRecorder != null) {
            mRecorder.stop();
            mRecorder.release();
            mRecorder = null;
        }
    }

}

2、音源播放器

import android.media.MediaPlayer;
import android.util.Log;

import java.io.IOException;


public class AudioSourcePlay {

    private static final String TAG = "AudioSourcePlay";
    private MediaPlayer mPlayer;


    public void startPlaying(String fileName) {
        mPlayer = new MediaPlayer();
        try {
            mPlayer.setDataSource(fileName);
            mPlayer.prepare();
            mPlayer.start();
            Log.d(TAG, "startPlaying");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public void stopPlaying() {
        if (mPlayer != null) {
            mPlayer.release();
            mPlayer = null;
        }
        Log.d(TAG, "stopPlaying");
    }
}

3、调用

        ok.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //开启录音
                startRecording();
            }
        });
        cancel.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // 停止录音
                stopRecording();
            }
        });
        mUpgrade.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                // 播放
                AudioSourcePlay();
            }
        });




    private void startRecording() {
        mMicrophoneRecording = new MicrophoneRecording();
        mMicrophoneRecording.startRecording();
        Log.d("ModuleService", "openMicrophone: ");
    }

    private void stopRecording(){
        mMicrophoneRecording.stopRecording();
        Log.d("ModuleService", "stopMicrophone: ");
    }

    private void AudioSourcePlay(){
        mAudioSourcePlay = new AudioSourcePlay();
        mAudioSourcePlay.startPlaying(mMicrophoneRecording.getAudioFile());
        Log.d("ModuleService", "playing: ");
    }


    @Override
    protected void onDestroy() {
        super.onDestroy();
        if (mMicrophoneRecording != null) {
            stopRecording();

            mMicrophoneRecording = null;
        }
        if (mAudioSourcePlay != null){
            mAudioSourcePlay.stopPlaying();
            mAudioSourcePlay = null;
        }

    }

二、实时录音并播放

1、

    // 线程处理数据流
   private  class RecordThread extends Thread{
        static final int frequency = 44100;
        static final int channelConfiguration = AudioFormat.CHANNEL_CONFIGURATION_MONO;
        static final int audioEncoding = AudioFormat.ENCODING_PCM_16BIT;

        @Override
        public void run() {
            int recBufSize = AudioRecord.getMinBufferSize(frequency, channelConfiguration, audioEncoding)*2;
            int plyBufSize = AudioTrack.getMinBufferSize(frequency, channelConfiguration, audioEncoding)*2;
            audioRecord = new AudioRecord(MediaRecorder.AudioSource.MIC, frequency, channelConfiguration, audioEncoding, recBufSize);
            audioTrack = new AudioTrack(AudioManager.STREAM_MUSIC, frequency, channelConfiguration, audioEncoding, plyBufSize, AudioTrack.MODE_STREAM);
            byte[] recBuf = new byte[recBufSize];
            audioRecord.startRecording();
            audioTrack.play();
            while(true){
                int readLen = audioRecord.read(recBuf, 0, recBufSize);
                audioTrack.write(recBuf, 0, readLen);
            }
        }
    }

2、调用

    private MicrophoneRecording mMicrophoneRecording;
    private AudioSourcePlay mAudioSourcePlay;

    private  AudioRecord audioRecord;
    private  AudioTrack audioTrack;      



 mUpgrade.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                // 播放
                RecordThread recordThread = new RecordThread();
                recordThread.start();
            }
        });


    @Override
    protected void onDestroy() {
        super.onDestroy();
        audioTrack.stop();
        audioRecord.stop();
    }