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();
}
}
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