//语音操作对象
private MediaPlayer mPlayer = null;
private MediaRecorder mRecorder = null;
//语音文件保存路径
private String FileName = null;
FileName = Environment.getExternalStorageDirectory().getAbsolutePath() + "/soundrecord/amrsend.amr";

@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
  switch (motionEvent.getAction()) {
    case MotionEvent.ACTION_DOWN:
      beginX = motionEvent.getX();
      beginY = motionEvent.getY();
      Log.e("MainActivity", "beginX:" + beginX);
      Log.e("MainActivity", "beginY:" + beginY);
      Log.e("MainActivity", "ACTION_DOWN");
      mRecorder = new MediaRecorder();
      mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
      mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
      mRecorder.setOutputFile(FileName);
      mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
      try {
        mRecorder.prepare();
      } catch (IOException e) {
        Log.e("MainActivity", "prepare() failed" + e);
      }
      mRecorder.start();
      break;
    case MotionEvent.ACTION_UP:
      finalX = motionEvent.getX();
      finalY = motionEvent.getY();
      Log.e("MainActivity", "finalX:" + finalX);
      Log.e("MainActivity", "finalY:" + finalY);
      Log.e("MainActivity", "ACTION_UP");
      mRecorder.stop();
      mRecorder.release();
      mRecorder = null;
      if ((beginY - finalY) > 50) {
        Log.e("MainActivity", "执行删除");
        new File(FileName).delete();
        Log.e("MainActivity", "执行删除后文件是否还存在：" + new File(FileName).exists());
      }
      break;
    default:
      break;
  }
  return true;
}

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />