Extracting data from server takes too much time- android

Question

I have a android application, where i extract data from the multiple urls and save then as arraylist of string. It works fine, but for fetching data from 13 urls, it takes close to 15-20 sec. Where as fetching the data from same set of urls take 3-4 sec in same app built using phonegap. Here is the code below.

        @Override
        protected String doInBackground(String... params) {
            client = new DefaultHttpClient();
            for(int i=0;i<url.size();i++)
            {
                get = new HttpGet(url.get(i));
                try {
                    response = client.execute(get);
                } catch (ClientProtocolException e) {
                    e.printStackTrace();
                } catch (IOException e) {
                    e.printStackTrace();
                }
                entity = response.getEntity();
                InputStream is = null;
                try {
                    is = entity.getContent();
                } catch (IllegalStateException e) {         
                    e.printStackTrace();
                } catch (IOException e) {
                    e.printStackTrace();
                }
                BufferedReader reader = new BufferedReader(
                        new InputStreamReader(is));
                StringBuffer buffer = new StringBuffer();
                String line = null;
                do {
                    try {
                        line = reader.readLine();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                    buffer.append(line);
                } while (line != null);
                String str = buffer.toString();
                param.add(str);             
            }
            return null;
        }

Could anyone please suggest how i can speed this execution and reduce the extraction time.

In this case, the slow performance may be caused by `ASyncTask`s not running in parallel. See http://commonsware.com/blog/2012/04/20/asynctask-threading-regression-confirmed.html for more information — TactMayers, May 07 '13 at 09:24

score 0 · Answer 1 · edited May 07 '13 at 10:34

0

You could try starting a separate thread for each iteration from the for loop. Smth like this :

for(int i = 0; i < url.size(); i++){ 
    //start thread that gets data from url and adds it to the list
}

edited May 07 '13 at 10:34

sabadow

5,095
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answered May 07 '13 at 10:18

Dan Riza

397
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11

Extracting data from server takes too much time- android

1 Answers1