android - Default Onclick of child element in expandablelistview? -

this onclick listener child element.

 getexpandablelistview().setonchildclicklistener(new expandablelistview.onchildclicklistener() {          @override         public boolean onchildclick(expandablelistview parent, view v,                 int groupposition, int childposition, long id) {             // todo auto-generated method stub             onchild_click(parent,v,                 groupposition,childposition, id);             return true;         }     }); 

it working when click on child element. need select first child default(inside oncreate() method). expanding group using this.

 getexpandablelistview().expandgroup(0); 

i tried these things child element not firing onclick event.but when click on child working.

 getexpandablelistview().setitemchecked(1, true); 

and

 getexpandablelistview().setselectedchild(0, 0, true); 

first of got set expandablelistview choice mode single.. i'll show you:

explistview.setchoicemode(listview.choice_mode_single); explistview.setitemchecked(numberofchildtocheck+numberofgroupthatisopened+1, true); 

if want work got collapse other groups when 1 opened. next got set backgroud drowable of explistview childs use selector.

here xml file background:

<?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android" android:exitfadeduration="@android:integer/config_shortanimtime">       <item android:drawable="@drawable/selected_backgroun" android:state_activated="true"/>     <item android:drawable="@drawable/simple_background"/>  </selector> 

there layout inflated set view child items. got set

android:background="@drawable/name_of_your_xml_file_with_selector 

if it's not clear can ask questions , i'll show images gonna this.. thanks.