java.util.ArrayList cannot be cast to android.os.Parcelable. key expected Parcelable but value was a java.util.ArrayList -

what reason of below error

key object_list expected parcelable value java.util.arraylist.  default value <null> returned. 

this full code

public class singleobjectactivity extends activity {     public static final string object_list = "object_list";     private arraylist<listitem> objects;     public imageview imgview;     private listitem listobjects;     @override     public void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.singleobject);         bundle extras = getintent().getextras();          imgview = (imageview) findviewbyid(r.id.funnyimage);          if (extras.containskey(object_list)) {             this.listobjects = extras.getparcelable(object_list);         } else {             this.listobjects = null;         }          if (listobjects != null) {             picasso.                     with(getapplicationcontext()).                     load(listobjects.geturl())                             //load()                     .placeholder(r.drawable.logo)                     .fit()                     .nofade()                     .into(imgview);          }     } } 

sending intent

        arraylist<listitem> personarraylist = new arraylist<>();         personarraylist.add(new listitem(item.getorder(), item.getid(), item.geturl(), item.getusername(), item.getlikes()));          intent intent = new intent(mcontext,singleobjectactivity.class);         intent.putextra("object_list", personarraylist);         intent.addflags(intent.flag_activity_new_task);         mcontext.startactivity(intent); 

edit 4

        arraylist<listitem> items = getintent().getparcelablearraylistextra("object_list");         bundle extras = getintent().getextras();          imgview = (imageview) findviewbyid(r.id.funnyimage);       /*   if (extras != null) {             objects = extras.getparcelablearraylist(object_list);         } else {             objects = new arraylist<listitem>();         }*/          if (extras.containskey(object_list)) { //            this.listobjects = extras.getparcelable(object_list);          //   this.listobjects = (listitem) extras.getparcelable(object_list);             this.objects=  extras.getparcelablearraylist("object_list");           } else {             this.objects = null;         }          if (this.listobjects != null) {             picasso.                     with(getapplicationcontext()).                     load(this.listobjects.geturt())                             //load()                     .placeholder(r.drawable.logo)                     .fit()                     .nofade()                     .into(imgview);          }     } 

when sending arraylist:

intent intent = new intent(context ,targetactivity.class);         intent.putparcelablearraylistextra("object_list", personarraylist);         context.startactivity(intent); 

when receiving arraylist:

arraylist<listitem> items = getintent().getparcelablearraylistextra("object_list"); 

note not same getintent().getextras().getparcelablearraylist(). currently, believe incorrectly writing

bundle extras = geintent().getextras(); extras.getparcelablearraylist("object_list"); 

also, listitem, despite implementing parcelable, not copy of values. isn't causing issue worth keeping in mind.