使用MediaRecorder的步骤：    1、创建MediaRecorder对象    2、调用MediRecorder对象的setAudioSource()方法设置声音的来源，一般传入MediaRecorder.MIC    3、调用MediaRecorder对象的setOutputFormat()设置所录制的音频文件的格式    4、调用MediaRecorder对象的setAudioRncoder()、setAudioEncodingBitRate(int bitRate)、setAudioSamlingRate(int SamplingRate)设置所录音的编码格式、编码位率、采样率等，    5、调用MediaRecorder对象的setOutputFile(String path)方法设置录制的音频文件的保存位置    6、调用MediaRecoder对象的Prepare()方法准备录制    7、调用MediaRecoder对象的start()方法开始录制    8、调用MediaRecoder对象的stop()方法停止录制，并调用release()方法释放资源        -。启用权限    <uses-permission  android:name="android.permission.MOUNT_FORMAT_FILESYSTEMS"/>        <uses-permission  android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>        <uses-permission  android:name="android.permission.RECORD_AUDIO"/>        布局就不用说了 ，附上代码吧    主要代码：         public class MainActivity extends Activity implements OnClickListener {       private Button start;     private Button stop;     private ListView listView;     // 录音文件播放     private MediaPlayer myPlayer;     // 录音     private MediaRecorder myRecorder;     // 音频文件保存地址     private String path;     private String paths = path;     private File saveFilePath;     // 所录音的文件     String[] listFile = null;       ShowRecorderAdpter showRecord;     AlertDialog aler = null;       @Override     protected void onCreate(Bundle savedInstanceState) {      super.onCreate(savedInstanceState);      setContentView(R.layout.activity_main);      start = (Button) findViewById(R.id.start);      stop = (Button) findViewById(R.id.stop);      listView = (ListView) findViewById(R.id.list);      myPlayer = new MediaPlayer();      myRecorder = new MediaRecorder();      // 从麦克风源进行录音      myRecorder.setAudioSource(MediaRecorder.AudioSource.DEFAULT);      // 设置输出格式      myRecorder.setOutputFormat(MediaRecorder.OutputFormat.DEFAULT);      // 设置编码格式      myRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);      showRecord = new ShowRecorderAdpter();      if (Environment.getExternalStorageState().equals(        Environment.MEDIA_MOUNTED)) {       try {        path = Environment.getExternalStorageDirectory()          .getCanonicalPath().toString()          + "/RECORDERS";        File files = new File(path);        if (!files.exists()) {         files.mkdir();        }        listFile = files.list();       } catch (IOException e) {        e.printStackTrace();       }      }        start.setOnClickListener(this);      stop.setOnClickListener(this);      if (listFile != null) {       listView.setAdapter(showRecord);      }       }       @Override     public boolean onCreateOptionsMenu(Menu menu) {      getMenuInflater().inflate(R.menu.main, menu);      return true;     }       class ShowRecorderAdpter extends BaseAdapter {        @Override      public int getCount() {       return listFile.length;      }        @Override      public Object getItem(int arg0) {       return arg0;      }        @Override      public long getItemId(int arg0) {       return arg0;        }        @Override      public View getView(final int postion, View arg1, ViewGroup arg2) {       View views = LayoutInflater.from(MainActivity.this).inflate(         R.layout.list_show_filerecorder, null);       TextView filename = (TextView) views         .findViewById(R.id.show_file_name);       Button plays = (Button) views.findViewById(R.id.bt_list_play);       Button stop = (Button) views.findViewById(R.id.bt_list_stop);         filename.setText(listFile[postion]);       // 播放录音       plays.setOnClickListener(new OnClickListener() {        @Override        public void onClick(View arg0) {         try {          myPlayer.reset();          myPlayer.setDataSource(path + "/" + listFile[postion]);          if (!myPlayer.isPlaying()) {             myPlayer.prepare();           myPlayer.start();          } else {           myPlayer.pause();          }           } catch (IOException e) {          e.printStackTrace();         }        }       });       // 停止播放       stop.setOnClickListener(new OnClickListener() {          @Override        public void onClick(View arg0) {         if (myPlayer.isPlaying()) {          myPlayer.stop();         }        }       });       return views;      }       }       @Override     public void onClick(View v) {      switch (v.getId()) {      case R.id.start:       final EditText filename = new EditText(this);       Builder alerBuidler = new Builder(this);       alerBuidler         .setTitle("请输入要保存的文件名")         .setView(filename)         .setPositiveButton("确定",           new DialogInterface.OnClickListener() {            @Override            public void onClick(DialogInterface dialog,              int which) {             String text = filename.getText().toString();             try {              paths = path                + "/"                + text                + new SimpleDateFormat(                  "yyyyMMddHHmmss").format(System                  .currentTimeMillis())                + ".amr";              saveFilePath = new File(paths);              Log.e("activity", saveFilePath+"");              myRecorder.setOutputFile(saveFilePath                .getAbsolutePath());              saveFilePath.createNewFile();              myRecorder.prepare();              // 开始录音              myRecorder.start();              start.setText("正在录音中。。");              start.setEnabled(false);              aler.dismiss();              // 重新读取 文件              File files = new File(path);              listFile = files.list();              // 刷新ListView              showRecord.notifyDataSetChanged();             } catch (Exception e) {              e.printStackTrace();             }              }           });       aler = alerBuidler.create();       aler.setCanceledOnTouchOutside(false);       aler.show();       break;      case R.id.stop:       if (saveFilePath.exists() && saveFilePath != null) {        myRecorder.stop();        myRecorder.release();        // 判断是否保存 如果不保存则删除        new AlertDialog.Builder(this)          .setTitle("是否保存该录音")          .setPositiveButton("确定", null)          .setNegativeButton("取消",            new DialogInterface.OnClickListener() {             @Override             public void onClick(DialogInterface dialog,               int which) {              saveFilePath.delete();              // 重新读取 文件              File files = new File(path);              listFile = files.list();              // 刷新ListView              showRecord.notifyDataSetChanged();             }            }).show();         }       start.setText("录音");       start.setEnabled(true);      default:       break;      }       }       @Override     protected void onDestroy() {      // 释放资源      if (myPlayer.isPlaying()) {       myPlayer.stop();       myPlayer.release();      }      myPlayer.release();      myRecorder.release();      super.onDestroy();     }      }