CODEWITHSUNDEEP
androidlistviewdownload
lolobug
lolobug

Reputation: 1

Showing progressbar in listview while downloading

There's a "download" button in each listview item. While the button is clicked, it will start a worker thread to down files. And at the same time, the button changed to progressbar and showing the progress rate.

So please show me some proper ways.

Upvotes: 0

Views: 325

Answers (2)

Larry McKenzie
Larry McKenzie

Reputation: 3283

Something like this:

public class DownloadTask extends AsyncTask<Void, Void, Boolean> {

    protected void onPreExecute() {
            ProgressDialog() progress = new ProgressDialog(context);
            progress.setMessage("Loading ...");
            progress.show();
    }

    protected Boolean doInBackground(Void... arg0) {
          // Do work
         return true;
    }

    protected void onPostExecute(Boolean result) {
        progress.dismiss();
    }
}

This should be nested in your activity class and executed like this:

new DownloadTask().execute();

You will likely need to adjust the asynctask to fit your needs but this will get you started.

Upvotes: 1

eski
eski

Reputation: 7915

Use an AsyncTask since it has special methods for communicating with the main (UI) thread despite being asynchronous.

Here is an example: http://android-er.blogspot.com/2010/11/progressbar-running-in-asynctask.html

Upvotes: 1

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