我从下载管理器下载的内容会去哪里？

Question

我正在从解析服务器下载音频文件。运行以下代码后的结果是，当客户端单击通知时，它将播放。但是，当客户端关闭音乐播放器并将其备份打开时，它不再列出。我的问题是，该文件在哪里？我已经看到了设置外部存储位置的方法，但是我希望它与其他下载一起下载到内部存储。我该怎么做？

    private class DownloadFileTask extends AsyncTask<String, Void, String> {
    @Override
    protected void onPreExecute() {
        Toast.makeText(getActivity(), getString(R.string.downloading), Toast.LENGTH_SHORT).show();
        super.onPreExecute();
    }

    @Override
    protected String doInBackground(String... urls) {

        String currentSong = urls[0];
        try {
            downloadManager = (DownloadManager) getActivity().getSystemService(Context.DOWNLOAD_SERVICE);
            Uri uri = Uri.parse(currentSong);

            DownloadManager.Request request = new DownloadManager.Request(uri);
            request.allowScanningByMediaScanner();
            request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE);
            request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
            downloadManager.enqueue(request);
        }
        catch (Exception e) {
            Toast.makeText(getActivity(), e.getMessage(), Toast.LENGTH_SHORT).show();
        }
        return currentSong;
    }

    @Override
    protected void onPostExecute(String s) {
        Toast.makeText(getActivity(), getString(R.string.download_complete), Toast.LENGTH_SHORT).show();
        super.onPostExecute(s);
    }