CODEWITHSUNDEEP
androidandroid-asynctaskprogress-bar
user2177823
user2177823

Reputation: 39

progress bar and multiple download

i want to download multiple file(2 for the moment) in one progress bar(without reseting the progress bar)

In order to do this , i retrieve the total lenght of all file in order to use it in the publish progress method

The problem is that my progress bar reset to 0 once reached 50% then increment again until another 50%

Here is my code

@Override
        protected Void doInBackground(Void... params) {
            int totalSizeFile;
            totalSizeFile=cm.getLength(url[0]);
            totalSizeFile+=cm.getLength(url[1]);
            progressBar.setMax(totalSizeFile);

            cm.downloadMp3(url[0], "test.mp3", totalTailleFic);
            cm.downloadMp3(url[1], "test2.mp3", totalTailleFic);


            return null;            

        }

        @Override
        protected void onProgressUpdate(Integer... progress) {

            textview.setText(String.valueOf(progress[0])+"%");
            progressBar.incrementProgressBy(progress[0]);


        }

The code of my download function where i call the publishprogress method

byte[] buffer = new byte[1024];
            int bufferLength = 0;
            int total=0;
            while ((bufferLength = inputStream.read(buffer)) != -1) {
            total += bufferLength;
            fileOutput.write(buffer, 0, bufferLength);

            asynch.publishProgress(bufferLength);

            }

Thank you very much

Upvotes: 1

Views: 778

Answers (1)

David Manpearl
David Manpearl

Reputation: 12656

Your ProgressBar resets to zero between downloads because the variable total also resets to zero.

In order to keep track of the current progress, the progress bar will have to increment with progressBar.incrementProgressBy() instead of setting the value with progressBar.setProgress().

This means that the publishProgress() and onProgressUpdate() methods will also have to be modified to process increment instead of progress. And, the increment is your bufferLength:

asynch.publishProgress(bufferLength);

You will also have to initialize your ProgressBar with the total number of bytes for the sum of both downloads with progressBar.setMax().

Upvotes: 1

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