expandablelistview - Keep values of editText boxes into an expandable list view on Android -

i created expandable view contains edittext box under each group.

    public class expandableactivity extends appcompatactivity {          expandablelistadapter listadapter;         expandablelistview explistview;         list<string> listdataheader;         hashmap<string, list<string>> listdatachild;          @override         protected void oncreate(bundle savedinstancestate) {             super.oncreate(savedinstancestate);             setcontentview(r.layout.activity_expandable);              explistview = (expandablelistview) findviewbyid(r.id.expandablelistview);             explistview.setdescendantfocusability(viewgroup.focus_after_descendants);              // preparing list data //custom function populates listdataheader , listdatachild             preparelistdata();               listadapter = new expandablelistadapter(this, listdataheader, listdatachild);             explistview.setadapter(listadapter); 

adapter code:

    public class expandablelistadapter extends baseexpandablelistadapter {          private context context;         private list<string> listdataheader;         private hashmap<string, list<string>> listdatachild;          public expandablelistadapter(context context, list<string> listdataheader,                                      hashmap<string, list<string>> listchilddata) {             this.context = context;             this.listdataheader = listdataheader;             this.listdatachild = listchilddata;         }           @override         public view getchildview(final int groupposition, final int childposition, boolean islastchild, view convertview, viewgroup parent) {             final string childtext = (string) getchild(groupposition, childposition);              if (convertview == null) {                 layoutinflater infalinflater = (layoutinflater) this.context.getsystemservice(context.layout_inflater_service);                 convertview = infalinflater.inflate(r.layout.e_list_item, null);             }              textview vw_text_sub = (textview) convertview.findviewbyid(r.id.esubt);             edittext vw_edit = (edittext) convertview.findviewbyid(r.id.eedit);              vw_text_sub.settext(childtext);              vw_edit.addtextchangedlistener(new textwatcher() {                  @override                 public void ontextchanged(charsequence arg0, int arg1, int arg2, int arg3) {                                     //store value?                 }                  @override                 public void beforetextchanged(charsequence arg0, int arg1, int arg2, int arg3) {                 }                  @override                 public void aftertextchanged(editable arg0) {                 }             });              return convertview;         }            @override         public view getgroupview(int groupposition, boolean isexpanded, view convertview, viewgroup parent) {             string headertitle = (string) getgroup(groupposition);             if (convertview == null) {                 layoutinflater infalinflater = (layoutinflater) this.context.getsystemservice(context.layout_inflater_service);                 convertview = infalinflater.inflate(r.layout.e_list_group, null);             }              textview vw_header = (textview) convertview.findviewbyid(r.id.eheader);             vw_header.settypeface(null, typeface.bold);             vw_header.settext(headertitle);              return convertview;         }  // other overridden methods here....      } 

because of adapter functionality recycle views, whenever type text in edit box value either lost or copied in other edit boxes when scrolling , down.

in list view array used store values of edit boxes.

what best way in expandable list view? array of arrays? can provide example expandable list view , not list view?

edit: tried have problems:

public view getchildview(final int groupposition, final int childposition, boolean islastchild, view convertview, viewgroup parent) {         final string childtext = (string) getchild(groupposition, childposition);          if (convertview == null) {             layoutinflater infalinflater = (layoutinflater) this.context.getsystemservice(context.layout_inflater_service);             convertview = infalinflater.inflate(r.layout.e_list_item, null);         }          textview vw_text_sub = (textview) convertview.findviewbyid(r.id.esubt);         edittext vw_edit = (edittext) convertview.findviewbyid(r.id.eedit);          vw_text_sub.settext(childtext);         if(tmp[groupposition][childposition] != null) {             vw_edit.settext(tmp[groupposition][childposition]);         }else{             vw_edit.settext("");         }          vw_edit.addtextchangedlistener(new textwatcher() {              @override             public void ontextchanged(charsequence arg0, int arg1, int arg2, int arg3) {                 tmp[groupposition][childposition] = arg0.tostring();             }              @override             public void beforetextchanged(charsequence arg0, int arg1, int arg2, int arg3) {             }              @override             public void aftertextchanged(editable arg0) {             }         });          return convertview;     } 

tmp array string[10][10]. groups 3 , children max 7 in group, array not smaller data.

the problem testwatcher. fires each method lot of times , have not found out why. solution use focuschangelistener or better show alertdialog in order fill field. on positive button click stored data in array.

so replacing textwatcher managed solve problem.