Android将音频文件保存到内部存储

Question

目前我已创建了音频录制Android应用程序。该文件保存在外部存储器中。

如果我改变方法为内部存储保存MODE_PRIVATE

的背景下

我看了一下保存文件的Android开发，但我不知道如何将文件实例转换成字节数组保存该文件并加载音频文件

下面是我的代码保存音频文件

public void onClick(View view) throws Exception { 
    if (count == 0) { 

     tbxRecordStatus.setText("Record"); 
     btnRecord.setText("Stop Record"); 

     Toast.makeText(MainActivity.this, "Recording Starts", 
       Toast.LENGTH_SHORT).show(); 
     dateInString = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss").format(
       new Date()).toString(); 
     String fileName = "TVSSSSD_" + dateInString + " record.3gp"; 

     SDCardpath = Environment.getExternalStorageDirectory(); 
     myDataPath = new File(SDCardpath.getAbsolutePath() 
       + "/.My Recordings"); 

     // mydir = context.getDir("media", Context.MODE_PRIVATE); 
     if (!myDataPath.exists()) 
      myDataPath.mkdir(); 


     audiofile = new File(myDataPath + "/" + fileName); 

     Log.d("path", myDataPath.getAbsolutePath()); 
     // File fileWithinMyDir = new File(mydir, fileName); 
     // audiofile = fileWithinMyDir; 
     // FileOutputStream out = new FileOutputStream(fileWithinMyDir); 

     recorder = new MediaRecorder(); 
     recorder.reset(); 
     recorder.setAudioSource(MediaRecorder.AudioSource.MIC); 
     recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP); 
     recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB); 
     recorder.setAudioEncodingBitRate(16); 
     recorder.setAudioSamplingRate(44100); 

     recorder.setOutputFile(audiofile.getAbsolutePath()); 

     recorder.prepare(); 

     recorder.start(); 

     count++; 

    } else { 

     tbxRecordStatus.setText("Stop"); 
     btnRecord.setText("Start Record"); 
     Toast.makeText(MainActivity.this, "Recording Stops", 
       Toast.LENGTH_SHORT).show(); 
     if (recorder != null) { 
      recorder.stop(); 
      recorder.release(); 

      recorder = null; 

     } else { 
      tbxRecordStatus.setText("Warning!"); 
      Toast.makeText(MainActivity.this, "Record First", 
        Toast.LENGTH_SHORT).show(); 
     } 
     count = 0; 
    } 
} 

下面是我的代码加载音频文件

recordList = new ArrayList<String>(); 
    File directory = Environment.getExternalStorageDirectory(); 
    file = new File(directory + "/My Recordings"); 
    File list[] = file.listFiles(); 
    for (int i = 0; i < list.length; i++) { 
     recordList.add(list[i].getName()); 
    } 

    Collections.sort(recordList, Collections.reverseOrder()); 

    listview = (ListView) findViewById(R.id.listView); 
    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, 
      android.R.layout.simple_list_item_1, android.R.id.text1, 
      recordList); 


    listview.setAdapter(adapter); 

    listview.setTextFilterEnabled(true); 

    listview.setOnItemClickListener(new OnItemClickListener() { 

     @Override 
     public void onItemClick(AdapterView<?> parent, View view, int position, 
       long arg3) { 
      // TODO Auto-generated method stub 


      String product = ((TextView) view).getText().toString(); 
      String fullPathAudio = file.getAbsolutePath() + "/" + product; 

      File resultFile = new File(fullPathAudio); 

      Intent intent = new Intent(); 
      intent.setAction(android.content.Intent.ACTION_VIEW); 
      intent.setDataAndType(Uri.fromFile(resultFile), "audio/*"); 
      startActivity(intent); 
     } 
    }); 

Answer 1

使用getFilesDir()

SDCardpath = getFilesDir(); 
     myDataPath = new File(SDCardpath.getAbsolutePath() 
       + "/.My Recordings"); 

     // mydir = context.getDir("media", Context.MODE_PRIVATE); 
     if (!myDataPath.exists()) 
      myDataPath.mkdir(); 


     audiofile = new File(myDataPath + "/" + fileName); 

更多看到Using the Internal Storage