Show File Download Progress in MB

Question

I'm downloading a mp3 file from the internet and saving it into the internal storage. The progress of the download is shown in a ProgressDialog. The ProgressDialog displays the progress in percent which is fine. In the right it displays the progress as 1/100 .... I'd like it to display the current size of the file downloaded in MB / the total size of the file being downloaded in MB.

Like in the following picture. The grey text is the current text being displayed. I'd like it to be displayed like the text below it in red.

Here's the current code :

public class DownloadSKHindi extends AsyncTask<String, Integer, String> {

    @Override
    protected void onPreExecute() {
        super.onPreExecute();

        progressDialog = new ProgressDialog(getActivity());
        progressDialog.setMessage("Downloading");
        progressDialog.setMax(100);
        progressDialog.setCancelable(false);
        progressDialog.setCanceledOnTouchOutside(false);
        progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
        progressDialog.show();
    }

    @Override
    protected String doInBackground(String... params) {
        int count = 0;
        try {
            url = new URL(skURL[10]);

            connection = url.openConnection();
            connection.connect();

            int lengthOfFile = connection.getContentLength();

            InputStream input = new BufferedInputStream(url.openStream());

            OutputStream output = getActivity().openFileOutput(file.getPath(), Context.MODE_PRIVATE);

            byte data[] = new byte[1024];

            long total = 0;

            while ((count = input.read(data)) != -1) {
                total += count;

                publishProgress((int) (total * 100 / lengthOfFile));
                output.write(data, 0, count);
            }

            output.flush();
            output.close();
            input.close();

        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }

    @Override
    protected void onProgressUpdate(Integer... values) {
        super.onProgressUpdate(values);
        progressDialog.setProgress(values[0]);
    }

    @Override
    protected void onPostExecute(String s) {
        super.onPostExecute(s);
        progressDialog.dismiss();
    }
}

Answer 1

Assuming total is how many bytes are downloaded, and lengthOfFile is the size in bytes of how large the file is. You can do this:

progressDialog.setProgressNumberFormat((bytes2String(total)) + "/" + (bytes2String(lengthOfFile)));

Then using the function bytes2String ( Credit to coder )

private static double SPACE_KB = 1024;
private static double SPACE_MB = 1024 * SPACE_KB;
private static double SPACE_GB = 1024 * SPACE_MB;
private static double SPACE_TB = 1024 * SPACE_GB;

public static String bytes2String(long sizeInBytes) {

    NumberFormat nf = new DecimalFormat();
    nf.setMaximumFractionDigits(2);

    try {
        if ( sizeInBytes < SPACE_KB ) {
            return nf.format(sizeInBytes) + " Byte(s)";
        } else if ( sizeInBytes < SPACE_MB ) {
            return nf.format(sizeInBytes/SPACE_KB) + " KB";
        } else if ( sizeInBytes < SPACE_GB ) {
            return nf.format(sizeInBytes/SPACE_MB) + " MB";
        } else if ( sizeInBytes < SPACE_TB ) {
            return nf.format(sizeInBytes/SPACE_GB) + " GB";
        } else {
            return nf.format(sizeInBytes/SPACE_TB) + " TB";
        }
    } catch (Exception e) {
        return sizeInBytes + " Byte(s)";
    }

}

Source

Answer 2

Use TextView that is appended after progressDialog inside XML file. Consider TextView tv = findViewById();

Use this: publishProgress((int) (total * 100 / lengthOfFile), total ,lengthOfFile); to push new data.

And to update the tv use this:

 @Override
    protected void onProgressUpdate(Integer... values) {
        super.onProgressUpdate(values);
        progressDialog.setProgress(values[0]);
tv.setText((values[1]/(1024*1024)) + "" +(values[1]/(1024*1024)));
    }