android - java.lang.NullPointerException in ArrayAdapter -


from google play "crash & anr" see users getting below error. couldn't reproduce error self. have arrayadaper class public class discussarrayadapter extends arrayadapter{ used listitem in activity:

first, don't know if proplem in arrayadaper class or in activity. least if advice should error. shell example focus on teh getview method of arrayadapter?

the getview method of arrayadaper below. 

java.lang.nullpointerexception @ com.castvast.discussarrayadapter.getview(discussarrayadapter.java:84) @ android.widget.abslistview.obtainview(abslistview.java:2461) @ android.widget.listview.makeandaddview(listview.java:1775) @ android.widget.listview.fillup(listview.java:712) @ android.widget.listview.correcttoohigh(listview.java:1401) @ android.widget.listview.fillspecific(listview.java:1339) @ android.widget.listview.layoutchildren(listview.java:1618) @ android.widget.abslistview.onlayout(abslistview.java:2296) @ android.view.view.layout(view.java:14055) @ android.view.viewgroup.layout(viewgroup.java:4604) @ android.widget.linearlayout.setchildframe(linearlayout.java:1655) @ android.widget.linearlayout.layoutvertical(linearlayout.java:1513) @ android.widget.linearlayout.onlayout(linearlayout.java:1426) @ android.view.view.layout(view.java:14055) @ android.view.viewgroup.layout(viewgroup.java:4604) @ android.widget.framelayout.onlayout(framelayout.java:448) @ android.view.view.layout(view.java:14055) @ android.view.viewgroup.layout(viewgroup.java:4604) @ android.widget.linearlayout.setchildframe(linearlayout.java:1655) @ android.widget.linearlayout.layoutvertical(linearlayout.java:1513) @ android.widget.linearlayout.onlayout(linearlayout.java:1426) @ android.view.view.layout(view.java:14055) @ android.view.viewgroup.layout(viewgroup.java:4604) @ android.widget.framelayout.onlayout(framelayout.java:448) @ android.view.view.layout(view.java:14055) @ android.view.viewgroup.layout(viewgroup.java:4604) @ android.view.viewrootimpl.performlayout(viewrootimpl.java:1992) @ android.view.viewrootimpl.performtraversals(viewrootimpl.java:1813) @ android.view.viewrootimpl.dotraversal(viewrootimpl.java:1112) @ android.view.viewrootimpl$traversalrunnable.run(viewrootimpl.java:4472) @ android.view.choreographer$callbackrecord.run(choreographer.java:725) @ android.view.choreographer.docallbacks(choreographer.java:555) @ android.view.choreographer.doframe(choreographer.java:525) @ android.view.choreographer$framedisplayeventreceiver.run(choreographer.java:711) @ android.os.handler.handlecallback(handler.java:615) @ android.os.handler.dispatchmessage(handler.java:92) @ android.os.looper.loop(looper.java:137) @ android.app.activitythread.main(activitythread.java:4898) @ java.lang.reflect.method.invokenative(native method) @ java.lang.reflect.method.invoke(method.java:511) @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:1006) @ com.android.internal.os.zygoteinit.main(zygoteinit.java:773) @ dalvik.system.nativestart.main(native method)

get view method:

public view getview(int position, view convertview, viewgroup parent) {         view row = convertview;         if (row == null) {             layoutinflater inflater = (layoutinflater) this.getcontext().getsystemservice(context.layout_inflater_service);             row = inflater.inflate(r.layout.listitem_discuss, parent, false);         }          wrapper = (linearlayout) row.findviewbyid(r.id.wrapper);          onemessage coment = getitem(position);           myactivity.itempostin=position;          imageview arrowimage = (imageview) row.findviewbyid(r.id.aquaplayicon);         final  imageview arrowimagefinal=arrowimage;         final long seqf=coment.seq ;         final string userlinkf=coment.userlink ;         arrowimage.setonclicklistener(new onclicklistener(){                public void onclick(view view) {                  ;                   myactivity.opencontextmenu(arrowimagefinal);                  myactivity.seq=seqf;                  myactivity.userlink=userlinkf;                  ;               }});          arrowimage.setonlongclicklistener(new onlongclicklistener(){             @override             public boolean onlongclick(view v) {                  ;                   myactivity.opencontextmenu(arrowimagefinal);                  myactivity.seq=seqf;                  myactivity.userlink=userlinkf;                  return true;               }});          myactivity .registerforcontextmenu(arrowimage);           msgtextview =(textview)/*(edittext)*/ row.findviewbyid(r.id.comment);            myactivity .registerforcontextmenu(msgtextview );          final textview mytextviewfinal=msgtextview;          msgtextview.setonclicklistener(new onclicklistener(){                public void onclick(view view) {                  ;                   myactivity.opencontextmenu( mytextviewfinal);                  myactivity.seq=seqf;                     //copy funcation                  //cast received view textview can text                  textview yourtextview = (textview) view;                  activity host = (activity) yourtextview.getcontext();                  //place textview's text in clipboard                  android.text.clipboardmanager clipboard = ( android.text.clipboardmanager) host.getsystemservice(host.clipboard_service );                    clipboard.settext(yourtextview.gettext());                  ;               }});          msgtextview.setonlongclicklistener(new onlongclicklistener(){             @override             public boolean onlongclick(view v) {                  ;                   myactivity.opencontextmenu( mytextviewfinal);                  myactivity.seq=seqf;                 //copy funcation                  //cast received view textview can text                  textview yourtextview = (textview) v;                  activity host = (activity) yourtextview.getcontext();                  //place textview's text in clipboard                  android.text.clipboardmanager clipboard = ( android.text.clipboardmanager) host.getsystemservice(host.clipboard_service );                   clipboard.settext(yourtextview.gettext());                   return true;               }});                msgtextview.settext(coment.msgtext);         //msgtextview.setgravity(!coment.sentbyuser   ? gravity.left : gravity.right)  ;          sender = (textview) row.findviewbyid(r.id.sender);          prettytime p = new prettytime();          string device_lang= locale.getdefault().getlanguage();//getdisplaylanguage();         string dateformat=null;         if(device_lang==null || !device_lang.equals("ar") )         {             dateformat= p.format(new date(  coment.msgdate.gettime() ));         }else         {  //just display numric             simpledateformat sdf = new simpledateformat("dd/mm/yyyy h:mm a",  locale.getdefault() );             long duration =coment.msgdate.gettime();             dateformat=sdf.format(new date(duration /*- timezone.getdefault().getrawoffset()*/ ));         }          if(coment.sentbyuser)            sender.settext(row.getcontext().getresources().getstring(r.string.sender_marker)+" @ "+dateformat  );         else            sender.settext(coment.sendername+" @ "+dateformat  );          relativelayout.layoutparams params = new relativelayout.layoutparams(relativelayout.layoutparams.wrap_content, relativelayout.layoutparams.wrap_content);         relativelayout.layoutparams params2 = new relativelayout.layoutparams(relativelayout.layoutparams.wrap_content, relativelayout.layoutparams.wrap_content);          params.setmargins(5, 5, 5, 0);         params2.setmargins(0, 0, 0, 0);          if(!coment.sentbyuser)         {             params.addrule(relativelayout.align_parent_left, relativelayout.true);             params2.addrule(relativelayout.align_parent_left, relativelayout.true);             params2.addrule(relativelayout.below, msgtextview.getid());              // no need show arrow image               arrowimage.setvisibility(view.visible);          }         else         {             params.addrule(relativelayout.align_parent_right, relativelayout.true);             params2.addrule(relativelayout.align_parent_right, relativelayout.true);             params2.addrule(relativelayout.below, msgtextview.getid());              arrowimage.setvisibility(view.gone);         }         msgtextview.setlayoutparams(params);//msgtextview.setpadding(10, 0, 10, 0);         sender.setlayoutparams(params2);//sender.setpadding(10, 0, 10, 0);          msgtextview.setbackgroundresource(!coment.sentbyuser ? r.drawable.bubble_yellow : r.drawable.bubble_green);         wrapper.setgravity(!coment.sentbyuser   ? gravity.left : gravity.right);          return row;     }


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