android - Update only clicked image on GridView -

i have gridview using custom adapter imageview elements. want change imageview onitemclick , have conditions clicking. if clicked item available change image. when change image resource item have update whole gridview adapter.notifydatasetchanged();. gridview has 100 elements updating them costs me half second delay , it's disturbing. how can update elements have changed ?

here getview() method in adapter.

  public view getview(final int position, view convertview, viewgroup parent) {     point point;     view v = null;     point=items.get(position);      int resid;     resid=point.getbackground();     v = inflater.inflate(r.layout.item, null);     imageview tv = (imageview) v.findviewbyid(r.id.image_button);     tv.setimageresource(resid);     return v; } 

here getbackground() method on point object

public int getbackground(){     int backid=(r.drawable.button_initial);     if(isfilled){         backid=(r.drawable.button_clicked);     }     else if(isavailable){         backid=(r.drawable.button_green);     }     return backid; } 

thanks in advance.

you should update point in items list , call notifydatasetchanged();

it best if in activity..like that

list<point> points = new arraylist<point>; adapter adapter = new adapter(points);      gridview.setonitemselectedlistener(new adapterview.onitemselectedlistener() {       @override       public void onitemselected(adapterview<?> parent, view view, int position, long id) {         point p = items.get(position);         p.setbackground(..);         adapter.notifydatasetchanged();       }        @override public void onnothingselected(adapterview<?> parent) {        }     });