创建具有密码保护的文件夹

我正在尝试通过创建具有密码保护和内部音频文件的文件夹来为Android创建媒体 Logger .

但现在我只能创建其他应用程序和Android智能手机用户访问的文件夹和音频文件 .

实施密码保护的目的是为了不让其他应用程序或用户访问文件和文件夹，除非提供密码？

除了创建密码输入面板之外，有什么想法可以实现这个目的吗？

以下是我的代码 .

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();
        String dateInString =  new SimpleDateFormat(
                "yyyy-MM-dd-HH-mm-ss").format(new Date()).toString();
        String fileName = "TasB_" + dateInString + " record.3gp";
        SDCardpath = Environment.getExternalStorageDirectory();
        myDataPath = new File(SDCardpath.getAbsolutePath()  + "/My Recordings");
        if (!myDataPath.exists())
            myDataPath.mkdir();

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



        try
        {
         recorder.prepare();
        }
        catch (Exception e) 
        {
            e.printStackTrace();
        }
        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;
    }
}