java - How to redraw an ExpandableList within one of its Adapters functions? -

i have android application has expandablelist, in adapters getchildview(int,int,boolean,view,viewgroup) want redraw expandablelist if conditions true, should do?

here answer not recommended:

this acitivity:

public class myactivity extends activity implements myadapterlistener{     private expandablelistview expandablelistview1;     private myadapter adapter;     @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);          setcontentview(r.layout.activity_main);          expandablelistview1 = (expandablelistview) findviewbyid(r.id.expandablelistview1);         adapter = new myadapter(this);         expandablelistview1.setadapter(adapter);     }     @override     public void dorefresh() {         adapter.notifydatasetchanged();     }  } 

this adapter:

public class myadapter extends baseexpandablelistadapter{      public interface myadapterlistener{         public void dorefresh();     }      private myadapterlistener listener;      public myadapter(myadapterlistener listener){         this.listener = listener;     }      @override     public view getchildview(int groupposition, int childposition,             boolean islastchild, view convertview, viewgroup parent) {          if(some condition true , want refresh list view){             listener.dorefresh();         }         return null;     }  } 

hope helps.