Android 使用URLConnection下载音频文件的方法

 public class DownloadStreamThread extends Thread {  String urlStr;  final String targetFileAbsPath;  public DownloadStreamThread(String urlStr, String targetFileAbsPath) {   this.urlStr = urlStr;   this.targetFileAbsPath = targetFileAbsPath;  }  @Override  public void run() {   super.run();   int count;   File targetFile = new File(targetFileAbsPath);   try {    boolean n = targetFile.createNewFile();    Log.d(TAG, "Create new file: " + n + ", " + targetFile);   } catch (IOException e) {    Log.e(TAG, "run: ", e);   }   try {    URL url = new URL(urlStr);    URLConnection connection = url.openConnection();    connection.connect();    int contentLength = connection.getContentLength();    InputStream input = new BufferedInputStream(url.openStream());    OutputStream output = new FileOutputStream(targetFileAbsPath);    byte[] buffer = new byte[1024];    long total = 0;    while ((count = input.read(buffer)) != -1) {     total += count;     Log.d(TAG, String.format(Locale.CHINA, "Download progress: %.2f%%", 100 * (total / (double) contentLength)));     output.write(buffer, 0, count);    }    output.flush();    output.close();    input.close();   } catch (Exception e) {    Log.e(TAG, "run: ", e);   }  } }

new DownloadStreamThread(urlStr, targetFileAbsPath).start();