android - ExpandableListView OnChildClickListener with checkbox row not fire when scrolling -

i have baseexpandablelistadapter this:

public view getchildview(final int groupposition, final int childposition,         boolean islastchild, view convertview, viewgroup parent) {     final contentviewholder contentviewholder;     view view = convertview;     final book book = getchild(groupposition, childposition);      if (view == null) {         layoutinflater inflater = context.getlayoutinflater();         view = inflater.inflate(r.layout.item_book_row, null);         contentviewholder = new contentviewholder();         contentviewholder.tvname = (textview) view.findviewbyid(r.id.tvname);         contentviewholder.chkselected = (checkbox) view.findviewbyid(r.id.chkselected);         view.settag(contentviewholder);     }else{         contentviewholder = (contentviewholder) view.gettag();     }              contentviewholder.tvname.settext(book.gettitle());     contentviewholder.chkselected.setchecked(checkstates[groupposition][childposition]);      contentviewholder.chkselected.setonclicklistener(new onclicklistener() {          @override         public void onclick(view v) {             book.setselected(contentviewholder.chkselected.ischecked());             checkstates[groupposition][childposition] = contentviewholder.chkselected.ischecked();             ln.d("check on header %d row %d", groupposition, childposition);          }     });      return view; }    public boolean ischildselectable(int groupposition, int childposition) {      ln.d("child selected "+groupposition+" : "+childposition);         return true; } 

with child layout:

    <relativelayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" android:descendantfocusability="blocksdescendants"> <!-- row data -->     <textview         android:id="@+id/tvname"         android:layout_width="wrap_content"         android:layout_height="wrap_content" >     </textview>     <checkbox         android:id="@+id/chkselected"         android:focusable="false"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_alignparentright="true"         android:layout_marginleft="@dimen/item_vertical_margin"         android:layout_marginright="@dimen/item_vertical_margin" />     </relativelayout> 

and here fragment view:

  <linearlayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" >     <expandablelistview     android:id="@+id/lstcatbook"     android:layout_width="match_parent"     android:layout_height="fill_parent"      android:groupindicator="@null">   </expandablelistview>  </linearlayout> 

then register setonchildclicklistener on fragment.

  lstcatbook.setonchildclicklistener(new onchildclicklistener() {          @override         public boolean onchildclick(expandablelistview parent, view v,                 int groupposition, int childposition, long id) {             log.d("click on group " +groupposition +" child " + childposition);             return false;         }     }); 

everything fine when click on row item or checkbox. problem when scroll listview bottom, can't click on row item again (the onchildclick not fired ) while check box can work
have no ideas issue. have searched , tried many ways like: set check box focusable = false, descendantfocusability=blocksdescendants nothing can help.
wrong? appreciated.

finally figure out problem: cause use set expand group if listview. don't know why setonchildclicklistener doesn't work in case. can work around catch click event on convert view getchildview , notify main view.

something that:

public view getchildview(final int groupposition, final int childposition,     boolean islastchild, view convertview, viewgroup parent) {    //load data     convertview.setonclicklistener(new onclicklistener() {      @override     public void onclick(view v) {        // notify main view using listener     }    });    return converview;  }