Question

目前我已经创建了录音Android应用程序。该文件保存在外部存储器中。

如果我将方法更改为使用MODE_PRIVATE

的上下文保存为内部存储，该怎么办？

我已经阅读了Android开发人员关于保存文件但我不知道如何将文件实例转换为字节数组以保存文件并加载音频文件

以下是保存音频文件的代码

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();
        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;
    }
}

以下是我加载音频文件的代码

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);

有关详情，请参阅Using the Internal Storage

Android将音频文件保存到内部存储中

1 个答案: