android - Child selection in ExpandableListView -

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Text after "

In a ExpandableListView it is possible to select a child's item in the beginning so that the group containing Expansion happens

I thought setSelectedChild will do this but it does not produce any results.

The following part of the code I tested: 

  the public class increases the main activity activity {Private Static Last String Title = "Title"; @SuppressWarnings ("Serial") @ Override Protected on Zero (Bundle Saved Instantstate) {Super. Secret (Saved Instantstate); ExpandableListView ListView = New Extension EligibilityListview (this); SimpleExpandableListAdapter adapter = New SimpleExpandableListAdapter (this, new ArrayList & lt; map & lt; string, string & gt; & gt; () {{this.add (new HashMap & lt; string, string & gt; () {{this .put (title, "group 1");}}); this.add (new HashMap & lt; string, string & gt; () {{this.put (title, "group2");}}); This.add (new HashMap & lt; string, string & gt; () {{this.put (title, "group 3");}})}}}, android.R.layout.simple_expandable_list_item_1, new string [] {Title}, new integer [] {android.R.id.text1}, new ArrayList & quot; string, string & gt; & gt; & gt; () {{this.add (new ArrayList & lt; map & LT; string, string C & gt; & gt; () {{this.add (new HashMap & LT; string, string & gt list & lt;? Map & lt extends) {{This.put (TITLE, "Hair 1-1 ");}}); This.add (new hashmop  () {{this.put (TITLE," hair 1-2 ");}}}}}}); this Add (new ArrayList & lt; map & lt; string, string & gt; & gt; {) {{this.add (new HashMap & lt; string, string & gt; () {{This.put (title, "hair 2-1");}}); This.add (new hashmop & lt; string, string & gt; () {{ppt (title, "hair 2-2")}}); }}); This.add (new array list & lt; map & lt; string, string & gt; & gt; () {{this.add (new hashmop & lt; string, string & gt; () {{this.put ( TITLE, "Child 3-1")}}; This.add (new hashmop  () {{this.put (TITLE, "3-2 children")}}})} }}); }}, Android.R.layout.simple_expandable_list_item_2, new string [] {TITLE}, new entry [] (android.R.id.text1}); ListView.setAdapter (adapter); SetContentView (ListView); ListView.setSelectedChild (1, 1, true); }}    
 
 
 Add the call to  listView.expandGroup ()   Girl selected before the set () . .  Highly-supplied group  parameter is set to true  set selectedChild ()  If only it seems to work at least one group has expanded in the first place.

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