Question

1。。如下，我的代码已更新。

2。。每当我尝试使用进度计数对话框从服务器下载数据时，但下载开始时它就会显示计数百分比。

3。，但问题是，当百分比达到30％时，该对话框最多显示30％（对话框将被关闭（这意味着所有数据已成功下载））

4。但是我需要显示对话框，直到完成100％为止，然后应将其关闭。无论服务器中存在什么文件，大约5到6个文件即可。

@Override
    protected void onPreExecute() {
        this.progressDialog = new ProgressDialog(BaseApplication.getInstance().getCurrentActivity());
        this.progressDialog.setMessage("Downloading Please wait.");
        this.progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
        this.progressDialog.setMax(100);
        this.progressDialog.setCancelable(false);
        this.progressDialog.show();
    }

     @Override
    protected Boolean doInBackground(String... strings) {

     // Here is my downloading code  but i removed 
             DownloadData("" , "" , ""); //stuff
             }


        return true;

    }
      @Override
    protected void onProgressUpdate(String... values) {
        this.progressDialog.incrementProgressBy(5);

    }

     protected void onPostExecute(Boolean result) {

     this.progressDialog.dismiss();
      }

 private void downloadData(String Folder, String Name, String URL) {
        Log.i(TAG, "Coming to this downloadBookDetails ");
//        int url1 = Integer.parseInt(pDownloadURL);
        int len;
        try {


               // int urlsixe = pDownloadURL.length();
               // Log.i(TAG, "URL lenght" + urlsixe);
                URL url = new URL(URL);
                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();
                Log.i(TAG, " InputStream" + is);
                BufferedInputStream inStream = new BufferedInputStream(is, 1024 * 5);
                Log.i(TAG, " BufferedInputStream" + inStream);
                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) / urlsixe));
//                    Log.i(TAG, "Progress: Bar with Count " + (int) ((total * 100) / lenghtOfFile));
                    outStream.write(buff, 0, len);


                }

            publishProgress();
                outStream.flush();
                outStream.close();
                inStream.close();



        } catch (Exception e) {
            //Add Network Error.
            Log.i(TAG, "Download Error Exception " + e.getMessage());

            e.printStackTrace();
        }
    }

Answer 1

在您的Asyntask onPostExecute中检查是否达到最大值。如果达到最大值，请关闭对话框

  protected void onPostExecute(Boolean result) {

   if (barProgressDialog.getProgress() == barProgressDialog.getMax()) {     
    this.progressDialog.dismiss();
     }
  }

Answer 2

首先，使用进度栏中的setProgress（0）将进度设置为0

第二，您正在下载文件后更新进度栏。它可能无法正常运行。

在while循环中使用publishProgress（）。您已经在下载方法开始时保存了文件长度。计算total +（len / lengthOfFile * 100）下载的文件百分比。现在，使用此信息发送进度条百分比的更新值，而不是硬编码增量ProgressBy（5）。

Answer 3

您应将进度百分比通过import multiprocessing import functools def class_method_wrapper(obj, method_str, args): return getattr(obj, method_str)(args) class Bar(object): def __init__(self): self.pool = multiprocessing.Pool(3) def foo(self, x): return x * 2 def run(self, l): # skip code ... func = functools.partial(class_method_wrapper, self, 'foo') foo_result = self.pool.map(func, l) print foo_result # skip code ... def __getstate__(self): self_dict = self.__dict__.copy() del self_dict['pool'] return self_dict def test1(): bar = Bar() bar.run([1,2,3]) def test2(): bar = Bar() pool = multiprocessing.Pool(2) func = functools.partial(class_method_wrapper, bar, 'run') args = [] for _ in range(10): args.append([1, 2, 3]) pool.map(func, args) if __name__ == '__main__': test1() #test2()传递到onProgeressUpdate

尝试

publistProgress

进度计数未显示100％

3 个答案: