java - Load More Button Android with Limit and Offset -

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i have implemented custom scroll view (not list view). using intent service hit server offset , limit , display result. instance. set offset = 0 , limit = first_batch (int first_batch = 15) first call. returning 15 names , details. , next intent service call. using offset = first_batch , limit = first_batch. retuning next 15 names, 15 30. , displaying load more button @ end of 30 names. here problem. once hit load more button, want display next 15 names, offset = first_batch + first_batch , limit = first_batch. , growing more ..... here implementation ....

private void startname(){  intent getnamesearch = new intent(getsherlockactivity(), intentservice.class);     getnamesearch.putextra("search_offset", 0);     getnamesearch.putextra("search_limit", first_batch);     getnamesearch.setaction(intentservice.action_get_namesearch);     getsherlockactivity().startservice(getnamesearch);     mcallback.oncreateprogressdialog();      getnamesearch = new intent(getsherlockactivity(), intentservice.class);     getnamesearch.putextra("search_offset", first_batch);     getnamesearch.putextra("search_limit", first_batch);     getnamesearch.setaction(intentservice.action_get_namesearch);     getsherlockactivity().startservice(getnamesearch);     mcallback.oncreateprogressdialog(); }

once view displayed. loading loadmore button. , once click loadmore button calling intent service again. know wrong. offset 30 everytime. name displayed 30 45 time. want grow. say, after click loadmore button. want 30 45 , again hit load more button, should 45 60 , goes on ... 

    final button btnaddmore = (button) mynamesearch.findviewbyid(r.id.loadmore);     btnaddmore.setvisibility(view.visible);     loadmorebutton = false;     btnaddmore.setonclicklistener(new onclicklistener() {         @override         public void onclick(view v) {             loadmorebutton();         }     });

and here loadmorespinner method

private void loadmorebutton(){      intent getnamesearch = new intent(getsherlockactivity(), intentservice.class);     int finaloffset = first_batch * 2;     getnamesearch.putextra("search_offset", finaloffset);     getnamesearch.putextra("search_limit", first_batch);     getnamesearch.setaction(intentservice.action_get_namesearch);     getsherlockactivity().startservice(getnamesearch);     mcallback.oncreateprogressdialog(); }


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