Android ListView onClickListener Custom Adapter -

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i read posts custom adapters , how index them seems cannot make mine work. overwrite getview , xml contains 1 textview , 2 buttons. made both buttons detected onclicklistener couldnt differentiate listview element 1 triggered clickevent. tried different approach nullpointerexception in onclick method.

    @override public view getview(int position, view convertview, viewgroup parent){     viewholder holder;           if(convertview == null){         layoutinflater inflater = (layoutinflater)  context.getsystemservice(context.layout_inflater_service);          convertview = inflater.inflate(r.layout.listexample, null);         holder = new viewholder();         holder.textview = (textview) convertview.findviewbyid(r.id.commandline_text);         holder.start = (button) convertview.findviewbyid(r.id.test_start_button);         holder.stop = (button) convertview.findviewbyid(r.id.test_stop_button);         convertview.settag(holder);         convertview.findviewbyid(r.id.commandline_text);         convertview.findviewbyid(r.id.test_start_button);         convertview.findviewbyid(r.id.test_stop_button);      } else {         holder = (viewholder) convertview.gettag();     }     holder.textview.settext(this.getitem(position));     holder.start.setonclicklistener(this);     holder.stop.setonclicklistener(this);     return convertview;  } @override public void onclick(view v) {  //here want know button of 2 (start,stop) clicked , position     int position =(integer)v.gettag();     log.d("onclick","position: "+position);  } static class viewholder {     textview textview;     button start;     button stop; }

try using getpositionforview(v) find position correlates button pressed.


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