Android How to add clickable button in listview? -


i displaying listview movie , right side display button download when scroll listview button event interchange(repaint) every time,i have set button text cancel when user press download button , downloading started when scroll down list button text change initial name download , event interchange. 

 static class listitemcontainers {      //imageview imgicon;      //textview txttitle;      progressbar pb;      textview progressval;      button downloadbutton;      textview title;      imageview imageicon;      linearlayout layout;  }         @override public view getview(int position, view convertview,final viewgroup parent) {     // todo auto-generated method stub     final listitemcontainers holder;     log.d("game name in adapter",":"+gamelistname.get(position));       view vi=convertview;       final listitemcontainers holdz;     relativelayout rl;      if(convertview==null)     {          convertview = inflater.inflate(r.layout.list_row, null);               holder = new listitemcontainers();            holder.title = (textview)convertview.findviewbyid(r.id.game_name);           holder.imageicon=(imageview)convertview.findviewbyid(r.id.listicon);               rl=(relativelayout)convertview.findviewbyid(r.id.game_row);              holder.layout = (linearlayout )convertview.findviewbyid(r.id.dynamic);                 holder.progressval=(textview)convertview.findviewbyid(r.id.progressval);                holder.pb=(progressbar)convertview.findviewbyid(r.id.progressbar1);                holder.pb.setvisibility(view.invisible);                 holder.downloadbutton=(button)convertview.findviewbyid(r.id.button1);           convertview.settag(holder);      final listitemcontainers hold = holder;         //setbuttonclick(hold );       }     else {          holder = (listitemcontainers)convertview.gettag();        }             holder.title.settext(gamelistname.get(position));            holder.imageicon.setimagedrawable(gameicon.get(position));            holder.downloadbutton.settext("dwnload"+position);            holder.downloadbutton.setid(position);            holder.pb.setid(position+1000);             setbutton(holder,convertview,position);          return convertview; }  int globalid;     public void setbutton(final listitemcontainers holder,final view v,final int id){             holder.downloadbutton=(button)v.findviewbyid(id);             holder.pb=(progressbar)v.findviewbyid(id+1000);           holder.downloadbutton.setonclicklistener(new view.onclicklistener() {         @override         public void onclick(view view) {              toast.maketext(activity, "click by:"+id, toast.length_short).show();             if(checkflag==true){                 checkflag=false;                 globalid=id;              updateprogresbar.listcntr=holder;             up=new updateprogresbar(holder.pb,activity,v);           up.execute("");            canclebuttonclick(holder,v,id);             }           else{              toast.maketext(activity, "please wait", toast.length_short).show();          }             }     });  }

you should use view holder inside listview or have check convertview null before inflating ui.


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