android - 如何在一次下载多个文件时添加带百分比的进度条

Question

1. 我正在从服务器下载文件。代码如下
2. 一旦我点击下载我有图像和声音，以及服务器中的文本文件，所以它会获取所有数据(多个文件)

3. 因为我的波纹管代码在下载数据时显示带有计数对话框的百分比，但问题是百分比对话框显示每个长度的数据，但我需要对话框显示所有内容的百分比，而不是只显示一个内容

       private void downloadFiles(String pMain, String pFileName String pURL) {
       Log.i(TAG, "Coming to this downloadBookDetails ");
       int len;
       try {
           URL url = new URL(pURL);
           Log.i(TAG, "pDownload URL" + url);
           URLConnection ucon = url.openConnection();
           ucon.setReadTimeout(5000);
           ucon.setConnectTimeout(10000);
           ucon.connect();
           int lenghtOfFile = ucon.getContentLength();
           Log.i(TAG, "lenght of file" + lenghtOfFile);
           InputStream is = ucon.getInputStream();
           BufferedInputStream inStream = new BufferedInputStream(is, 1024 * 5);
           File directory = new File(pMainFolder, pFileName);
           Log.i(TAG, "File Name dir" + directory);
           FileOutputStream outStream = new FileOutputStream(directory);
           byte[] buff = new byte[5 * 1024];
           long total = 0;
           while ((len = inStream.read(buff)) != -1) {
               total += len;
               publishProgress("" + (int) ((total * 100) / lenghtOfFile));
               Log.i(TAG, "Progress: Bar with Count " + (int) ((total * 100) / lenghtOfFile));
               outStream.write(buff, 0, len);
           }
           outStream.flush();
           outStream.close();
           inStream.close();
       } catch (Exception e) {
           //Add Network Error.
           Log.i(TAG, "Download Error Exception " + e.getMessage());
   
           e.printStackTrace();
       }
   }
   

Answer 1

你试过这个吗Download multiple files with one progressbar java / Android

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