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();