Question

in my Android app I need to download a ~40 MB file, and I’m testing the code in my phone but the download speed is REALLY slow, I tried to download from different sources that are fast when using my PC.

Here is the code I use in the download service:

URLConnection conexion;
    URL url;
    int lenghtOfFile = 0;


    try {
        url = new URL("<URL>");
        conexion = url.openConnection();
        conexion.connect();
        lenghtOfFile = conexion.getContentLength();


        try {

            File f = new File(Environment.getExternalStorageDirectory() + "/testing");


            InputStream input = new BufferedInputStream(url.openStream());
            OutputStream output = new FileOutputStream(f.getAbsolutePath());

            byte data[] = new byte[1024];

            long total = 0;

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

                notification.contentView.setProgressBar(R.id.status_progress, 100, (int) (total * 100 / lenghtOfFile), false);
                notification.contentView.setTextViewText(R.id.status_text, Long.toString(total * 100 / lenghtOfFile));

                notificationManager.notify(42, notification);
                output.write(data, 0, count);
            }

            output.flush();
            output.close();
            input.close();
        } catch (Exception e) {
            e.getCause();
            e.getMessage();
        }


    } catch (Exception e) {
    }


}

Is it possible that this code is the reason of the slow dl speeds? Any ideas on how to make the download speed faster?

Answer 1

change this

byte data[] = new byte[1024];

to

byte data[] = new byte[4096];

and as commonsware said,
update your download progress notification in less frequencies.

for eg:
use a simple counter variable in your loop, and update progress when it reaches 10, and then resetting it..!