android mp3 文件下载需要帮助

Question

我正在开发一个 android 应用程序，我需要下载 mp3 文件

但下载过程应该在后台进行。
有人对此有任何想法吗？

Answer 1

我终于找到了解决办法。

public void mp3load() {
        URL url = new URL(url);
        HttpURLConnection c = (HttpURLConnection) url.openConnection();
        c.setRequestMethod("GET");
        c.setDoOutput(true);
        c.connect();

        String PATH = Environment.getExternalStorageDirectory()
                + "/download/";
        Log.v(LOG_TAG, "PATH: " + PATH);
        File file = new File(PATH);
        file.mkdirs();

         String fileName = "test.mp3";


        File outputFile = new File(file, fileName);
        FileOutputStream fos = new FileOutputStream(outputFile);

        InputStream is = c.getInputStream();

        byte[] buffer = new byte[1024];
        int len1 = 0;
        while ((len1 = is.read(buffer)) != -1) {
            fos.write(buffer, 0, len1);
        }
        fos.close();
        is.close();

}

它对我很有用。

Answer 2

android: Is it possible to dowload file to disk given an xml (from a URL)?

检查一下：带有 downloadFileFrom 方法的 AsyncTask 类将帮助您。