Android: My GridView's photos is mixed -

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public class imageadapter extends baseadapter {     layoutinflater inflater;     imageview photo;     checkbox check;     bitmapfactory.options options;      public imageadapter(context c) {         inflater = (layoutinflater)c.getsystemservice(context.layout_inflater_service);     }     public int getcount() {         return receivedphoto.size();     }     public object getitem(int position) {         return receivedphoto.get(position);     }     public long getitemid(int position) {         return position;     }     public view getview(int position, view convertview, viewgroup parent) {         if(convertview == null)  {             convertview = inflater.inflate(r.layout.phototab_list, parent, false);             photo = (imageview)convertview.findviewbyid(r.id.photos);             check = (checkbox)convertview.findviewbyid(r.id.photoscheck);             options = new bitmapfactory.options();             options.insamplesize = 16;         }         log.i("load", position + "");         if(receivephotos.get(position) == null)  {             receivephotos.set(position, bitmapfactory.decodefile((string)(receivedphoto.get(position)), options));         }            photo.setimagebitmap(receivephotos.get(position));         int check = photoischeck.get(position);         if(check == 0)  {             check.setchecked(false);         } else {             check.setchecked(true);         }         return convertview;     } }

i use arraylist gridview data. when scroll down , scroll up, photos mixed. mixed means photos' position changed. why that? please, me ㅠㅜ

try this... use view holder holding details...

public view getview(int position, view convertview, viewgroup parent) {         view view = convertview;         final viewholder holder;         if(convertview == null)  {             view = inflater.inflate(r.layout.phototab_list, parent, false);             holder = new viewholder();             holder.photo = (imageview)convertview.findviewbyid(r.id.photos);             holder.check = (checkbox)convertview.findviewbyid(r.id.photoscheck);             holder.options = new bitmapfactory.options();             holder.options.insamplesize = 16;         }else {      holder = (viewholder) view.gettag(); }         log.i("load", position + "");         if(receivephotos.get(position) == null)  {             receivephotos.set(position, bitmapfactory.decodefile((string)(receivedphoto.get(position)), options));         }            holder.photo.setimagebitmap(receivephotos.get(position));         int check = photoischeck.get(position);         if(check == 0)  {             holder.check.setchecked(false);         } else {             holder.check.setchecked(true);         }         return view;     }

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