public class AudioRecoderUtils { //文件路徑 private String filePath; //文件夾路徑 private String FolderPath; private MediaRecorder mMediaRecorder; private final String TAG = "fan"; public static final int MAX_LENGTH = 1000 * 60 * 10;// 最大錄音時長1000*60*10; private OnAudioStatusUpdateListener audioStatusUpdateListener; /**  * 文件存儲默認sdcard/record  */ public AudioRecoderUtils(){  //默認保存路徑為/sdcard/record/下  this(Environment.getExternalStorageDirectory()+"/record/"); } public AudioRecoderUtils(String filePath) {  File path = new File(filePath);  if(!path.exists())   path.mkdirs();  this.FolderPath = filePath; } private long startTime; private long endTime; /**  * 開始錄音 使用amr格式  *  錄音文件  * @return  */ public void startRecord() {  // 開始錄音  /* ①Initial：實例化MediaRecorder對象 */  if (mMediaRecorder == null)   mMediaRecorder = new MediaRecorder();  try {   /* ②setAudioSource/setVedioSource */   mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);// 設置麥克風   /* ②設置音頻文件的編碼：AAC/AMR_NB/AMR_MB/Default 聲音的（波形）的采樣 */   mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.DEFAULT);   /*    * ②設置輸出文件的格式：THREE_GPP/MPEG-4/RAW_AMR/Default THREE_GPP(3gp格式    * ，H263視頻/ARM音頻編碼)、MPEG-4、RAW_AMR(只支持音頻且音頻編碼要求為AMR_NB)    */   mMediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);   filePath = FolderPath + TimeUtils.getCurrentTime() + ".amr" ;   /* ③準備 */   mMediaRecorder.setOutputFile(filePath);   mMediaRecorder.setMaxDuration(MAX_LENGTH);   mMediaRecorder.prepare();   /* ④開始 */   mMediaRecorder.start();   // AudioRecord audioRecord.   /* 獲取開始時間* */   startTime = System.currentTimeMillis();   updateMicStatus();   Log.e("fan", "startTime" + startTime);  } catch (IllegalStateException e) {   Log.i(TAG, "call startAmr(File mRecAudioFile) failed!" + e.getMessage());  } catch (IOException e) {   Log.i(TAG, "call startAmr(File mRecAudioFile) failed!" + e.getMessage());  } } /**  * 停止錄音  */ public long stopRecord() {  if (mMediaRecorder == null)   return 0L;  endTime = System.currentTimeMillis();  //有一些網友反應在5.0以上在調用stop的時候會報錯，翻閱了一下谷歌文檔發現上面確實寫的有可能會報錯的情況，捕獲異常清理一下就行了，感謝大家反饋！  try {   mMediaRecorder.stop();   mMediaRecorder.reset();   mMediaRecorder.release();   mMediaRecorder = null;   audioStatusUpdateListener.onStop(filePath);   filePath = "";  }catch (RuntimeException e){   mMediaRecorder.reset();   mMediaRecorder.release();   mMediaRecorder = null;   File file = new File(filePath);   if (file.exists())    file.delete();   filePath = "";  }  return endTime - startTime; } /**  * 取消錄音  */ public void cancelRecord(){  try {   mMediaRecorder.stop();   mMediaRecorder.reset();   mMediaRecorder.release();   mMediaRecorder = null;  }catch (RuntimeException e){   mMediaRecorder.reset();   mMediaRecorder.release();   mMediaRecorder = null;  }  File file = new File(filePath);  if (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;// 間隔取樣時間 public void setOnAudioStatusUpdateListener(OnAudioStatusUpdateListener audioStatusUpdateListener) {  this.audioStatusUpdateListener = audioStatusUpdateListener; } /**  * 更新麥克狀態  */ private void updateMicStatus() {  if (mMediaRecorder != null) {   double ratio = (double)mMediaRecorder.getMaxAmplitude() / BASE;   double db = 0;// 分貝   if (ratio > 1) {    db = 20 * Math.log10(ratio);    if(null != audioStatusUpdateListener) {     audioStatusUpdateListener.onUpdate(db,System.currentTimeMillis()-startTime);    }   }   mHandler.postDelayed(mUpdateMicStatusTimer, SPACE);  } } public interface OnAudioStatusUpdateListener {  /**   * 錄音中...   * @param db 當前聲音分貝   * @param time 錄音時長   */  public void onUpdate(double db,long time);  /**   * 停止錄音   * @param filePath 保存路徑   */  public void onStop(String filePath); }}

<Button android:layout_width="match_parent" android:layout_height="wrap_content" android:text="按住說話" android:textColor="@android:color/white" android:id="@+id/button" android:background="@color/colorPrimary" />

//當前布局文件的根layout  final RelativeLayout rl = (RelativeLayout) findViewById(R.id.rl);  mButton = (Button) findViewById(R.id.button);  //PopupWindow的布局文件  final View view = View.inflate(this, R.layout.layout_microphone, null);  final PopupWindowFactory mPop = new PopupWindowFactory(this,view);  //PopupWindow布局文件里面的控件  mImageView = (ImageView) view.findViewById(R.id.iv_recording_icon);  mTextView = (TextView) view.findViewById(R.id.tv_recording_time);  mAudioRecoderUtils = new AudioRecoderUtils();  //錄音回調  mAudioRecoderUtils.setOnAudioStatusUpdateListener(new AudioRecoderUtils.OnAudioStatusUpdateListener() {   //錄音中....db為聲音分貝，time為錄音時長   @Override   public void onUpdate(double db, long time) {    //根據分貝值來設置錄音時話筒圖標的上下波動，下面有講解    mImageView.getDrawable().setLevel((int) (3000 + 6000 * db / 100));    mTextView.setText(TimeUtils.long2String(time));   }   //錄音結束，filePath為保存路徑   @Override   public void onStop(String filePath) {    Toast.makeText(MainActivity.this, "錄音保存在：" + filePath, Toast.LENGTH_SHORT).show();    mTextView.setText(TimeUtils.long2String(0));   }  });  //Button的touch監聽  mButton.setOnTouchListener(new View.OnTouchListener() {   @Override   public boolean onTouch(View v, MotionEvent event) {    switch (event.getAction()){     case MotionEvent.ACTION_DOWN:      mPop.showAtLocation(rl,Gravity.CENTER,0,0);      mButton.setText("松開保存");      mAudioRecoderUtils.startRecord();      break;     case MotionEvent.ACTION_UP:      mAudioRecoderUtils.stopRecord();  //結束錄音（保存錄音文件）//      mAudioRecoderUtils.cancelRecord(); //取消錄音（不保存錄音文件）      mPop.dismiss();      mButton.setText("按住說話");      break;    }    return true;   }  });