public class AudioRecoderUtils {

//文件路径

private String filePath;

//文件夹路径

private String FolderPath;

private MediaRecorder mMediaRecorder;

private final String TAG = "AudioRecoderUtils";

public static final int MAX_LENGTH = 1000 * 60 * 10;// 最大录音时长1000*60*10;

private OnAudioStatusUpdateListener audioStatusUpdateListener;

private static Object mLock = new Object();

private @RecordStatuT int statu_record = RecordStatu.NONE;

public static class RecordStatu{

public static final int NONE = 0;

public static final int RECORDING = 1;

}

/**

* RecordStatu

* @return

*/

public int getRecordStatu() {

return statu_record;

}

@IntDef({RecordStatu.NONE,RecordStatu.RECORDING})

@Retention(RetentionPolicy.SOURCE)

public @interface RecordStatuT{

}

private static AudioRecoderUtils m ;

public static AudioRecoderUtils getInstance(){

synchronized (mLock){

if (m == null){

m = new AudioRecoderUtils();

}

}

return m;

}

/**

* 文件存储默认sdcard/record

*/

private AudioRecoderUtils(){

//默认保存路径为/sdcard/record/下

this(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MUSIC)

+"/record/");

}

private AudioRecoderUtils(String filePath) {

File path = new File(filePath);

if(!path.exists())

path.mkdirs();

this.FolderPath = filePath;

}

private long startTime;

private long endTime;

/**

* 开始录音 使用amr格式

* 录音文件

* @return

*/

public void startRecord() {

// 开始录音

/* ①Initial：实例化MediaRecorder对象 */

if (mMediaRecorder == null)

mMediaRecorder = new MediaRecorder();

try {

/* ②setAudioSource/setVedioSource */

mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);// 设置麦克风

/* ②设置音频文件的编码：AAC/AMR_NB/AMR_MB/Default 声音的(波形)的采样 */

mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.DEFAULT);

/*

* ②设置输出文件的格式：THREE_GPP/MPEG-4/RAW_AMR/Default THREE_GPP(3gp格式

* ，H263视频/ARM音频编码)、MPEG-4、RAW_AMR(只支持音频且音频编码要求为AMR_NB)

*/

mMediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);

filePath = FolderPath + getNowTime() + ".amr" ;

/* ③准备 */

mMediaRecorder.setOutputFile(filePath);

mMediaRecorder.setMaxDuration(MAX_LENGTH);

mMediaRecorder.prepare();

/* ④开始 */

mMediaRecorder.start();

// AudioRecord audioRecord.

/* 获取开始时间* */

startTime = System.currentTimeMillis();

updateMicStatus();

statu_record = RecordStatu.RECORDING;

Log.e(TAG, "startTime" + startTime);

} catch (IllegalStateException e) {

e.printStackTrace();

Log.e(TAG, "call startAmr(File mRecAudioFile) failed! e =" + e.getMessage());

} catch (IOException e) {

e.printStackTrace();

Log.e(TAG, "call startAmr(File mRecAudioFile) failed! e= " + e.getMessage());

}

}

/**

* 停止录音

*/

public long stopRecord() {

if (mMediaRecorder == null)

return 0L;

endTime = System.currentTimeMillis();

//有一些网友反应在5.0以上在调用stop的时候会报错，翻阅了一下谷歌文档发现上面确实写的有可能会报错的情况，捕获异常清理一下就行了，感谢大家反馈！

try {

statu_record = RecordStatu.NONE;

if (null!= mMediaRecorder){

mMediaRecorder.stop();

mMediaRecorder.reset();

mMediaRecorder.release();

}

mMediaRecorder = null;

if (null!= audioStatusUpdateListener)

audioStatusUpdateListener.onStop(filePath);

filePath = "";

}catch (RuntimeException e){

e.printStackTrace();

Log.e(TAG, "call stopRecord() failed! e =" + e.getMessage());

statu_record = RecordStatu.NONE;

if (null != mMediaRecorder) {

mMediaRecorder.reset();

mMediaRecorder.release();

}

mMediaRecorder = null;

if (filePath != null) {

File file = new File(filePath);

if (file!=null && file.exists())

file.delete();

}

filePath = "";

}

return endTime - startTime;

}

/**

* 取消录音

*/

public void cancelRecord(){

try {

statu_record = RecordStatu.NONE;

if (null!= mMediaRecorder){

mMediaRecorder.stop();

mMediaRecorder.reset();

mMediaRecorder.release();

}

mMediaRecorder = null;

}catch (RuntimeException e){

Log.e(TAG, "call cancelRecord() failed! e =" + e.getMessage());

statu_record = RecordStatu.NONE;

if (null!= mMediaRecorder){

mMediaRecorder.reset();

mMediaRecorder.release();

}

mMediaRecorder = null;

}

if (filePath != null) {

File file = new File(filePath);

if (file!=null && file.exists())

file.delete();

}

filePath = "";

}

private final Handler mHandler = new Handler();

private Runnable mUpdateMicStatusTimer = new Runnable() {

public void run() {

updateMicStatus();

}

};

private int BASE = 1;

private int SPACE = 100;// 间隔取样时间

public void setOnAudioStatusUpdateListener(OnAudioStatusUpdateListener audioStatusUpdateListener) {

this.audioStatusUpdateListener = audioStatusUpdateListener;

}

/**

* 更新麦克状态

*/

private void updateMicStatus() {

if (mMediaRecorder != null) {

double ratio = (double)mMediaRecorder.getMaxAmplitude() / BASE;

double db = 0;// 分贝

if (ratio > 1) {

db = 20 * Math.log10(ratio);

if(null != audioStatusUpdateListener) {

audioStatusUpdateListener.onUpdate(db,System.currentTimeMillis()-startTime);

}

}

mHandler.postDelayed(mUpdateMicStatusTimer, SPACE);

}

}

public interface OnAudioStatusUpdateListener {

/**

* 录音中...

* @param db 当前声音分贝

* @param time 录音时长

*/

void onUpdate(double db,long time);

/**

* 停止录音

* @param filePath 保存路径

*/

void onStop(String filePath);

}

public String getNowTime(){

if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N){

return ""+System.currentTimeMillis()/1000;

}

Calendar c = Calendar.getInstance();

int y = c.get(Calendar.YEAR);

int m = c.get(Calendar.MONTH)+1;

int d =c.get(Calendar.DAY_OF_MONTH);

int h = c.get(Calendar.HOUR_OF_DAY);

int min = c.get(Calendar.MINUTE);

int s = c.get(Calendar.SECOND);

StringBuffer sb = new StringBuffer("");

sb.append(y);

sb.append("_");

sb.append(m);

sb.append("_");

sb.append(d);

sb.append(" ");

sb.append(h);

sb.append(":");

sb.append(min);

sb.append(":");

sb.append(s);

return sb.toString();

}

}