Show progress value for volley file download

Question

I need to show the progress of file download in percentage.

Currently I am using Volley library. I use InputStreamVolleyRequest class to make the download request and BufferedOutputStream to read/write the file.

How can I show the progress update in the most efficient manner?

Michaelmas

Answer 1

As you have mentioned that you are using InputStreamVolleyRequest, I hope you have written the following code or something similar as well:

@Override
public void onResponse(byte[] response) {
    HashMap<String, Object> map = new HashMap<String, Object>();
    try {
        if (response!=null) {

            String content =request.responseHeaders.get("Content-Disposition")
                    .toString();
            StringTokenizer st = new StringTokenizer(content, "=");
            String[] arrTag = st.toArray();

            String filename = arrTag[1];
            filename = filename.replace(":", ".");
            Log.d("DEBUG::FILE NAME", filename);

            try{
                long lenghtOfFile = response.length;

                InputStream input = new ByteArrayInputStream(response);

                File path = Environment.getExternalStorageDirectory();
                File file = new File(path, filename);
                map.put("resume_path", file.toString());
                BufferedOutputStream output = new BufferedOutputStream(new FileOutputStream(file));
                byte data[] = new byte[1024];

                long total = 0;

                while ((count = input.read(data)) != -1) {
                    total += count;
                    output.write(data, 0, count);
                }

                output.flush();

                output.close();
                input.close();
            }catch(IOException e){
                e.printStackTrace();

            }
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
}

If you have already done this, putting a progress bar is easy. get ProgressDialog object and initialise as shown below:

progressDialog = new ProgressDialog(Activity Context here);
progressDialog.setTitle("Any Title here");
progressDialog.setMessage("Downloading in Progress...");
progressDialog.setProgressStyle(progressDialog.STYLE_HORIZONTAL);
progressDialog.setCancelable(false);
progressDialog.setMax(100);
progressDialog.setProgress(0);
progressDialog.show();

Then just modify the while loop as shown below:

while ((count = input.read(data)) != -1) {
    total += count;
    output.write(data, 0, count);
    progress = (int)total*100/file_length;
    progressDialog.setProgress(progress);
}

Try this and let me know.

However let me also inform you that Volley is not suitable for heavy download. Rather I suggest you to use DownloadManager or Apache's HttpClient or even AsyncTask. They are easier to use and probably better for this purpose.

Leavening

isnt onResponse called after the file is completely downloaded? – Hiller

yes, in fact this doesn't work on my side. Plus the class InputStreamVolleyRequest is taken from an example that it's not referred anywhere in the question or the answer. – Lody

This is not the correct answer. onResponse(), we have already downloaded the file, it will show file writing disk progress. – Susceptive

Does volley support resume support in case of network fluctuations? – Counterreply

Answer 2

I am using progress bar with Httpclient so if you want to do progress then my suggestion is use HTTP client so that you can make exactly you want

Here is Link : http://www.androidhive.info/2014/12/android-uploading-camera-image-video-to-server-with-progress-bar/

Hope this will help you ! Cheers !

Iredale

this doesn't answer the original question. – Lody