how to remove FATAL EXCEPTION: AsyncTask in android

Question

10-23 00:41:00.705: E/AndroidRuntime(3622): FATAL EXCEPTION: AsyncTask #1
10-23 00:41:00.705: E/AndroidRuntime(3622): java.lang.RuntimeException: An error occured while          


        

Answer 1

The reason is you can only consume Content from Entity once.

You did it twice (maybe without you knowing it) in here

Reader reader = new InputStreamReader(response.getEntity().getContent());

and here

response.getEntity().writeTo(out);

I know this is sounds a little weird but actually the writeTo() function will get content from the entity to write to the OutputStream. You can see it in the documentation here

Another workaround you can use is turning it to string and let GSON handle it

@Override
protected String doInBackground(String... uri) {
    HttpClient httpclient = new DefaultHttpClient();
    HttpResponse response;
    String responseString = null;
    try {
        response = httpclient.execute(new HttpGet(uri[0]));
        StatusLine statusLine = response.getStatusLine();
        if(statusLine.getStatusCode() == HttpStatus.SC_OK){
            responseString = EntityUtils.toString(response.getEntity()); // content will be consume only once
            Gson gson = new Gson();
            Holder response1 = gson.fromJson(responseString, Holder.class);
        } else{
            //Closes the connection.
            response.getEntity().getContent().close();
            throw new IOException(statusLine.getReasonPhrase());
        }
    } catch (ClientProtocolException e) {
        //TODO Handle problems..\
        progressDialog.hide();
    } catch (IOException e) {
        //TODO Handle problems..
        progressDialog.hide();
    }
    return responseString;
}

I hope my answer can help you!