Как узнать, как получить выбранный элемент в расширяемом списке ANDROID

У меня есть расширяемый список, содержащий группы: континенты и дети: страны. Когда одна страна нажата, я хочу, чтобы страна отображалась в текстовом виде в другом классе.

package com.zeus.eca; import android.app.ExpandableListActivity; import android.content.res.Resources; import android.graphics.Typeface; import android.os.Bundle; import android.view.Gravity; import android.view.View; import android.view.ViewGroup; import android.widget.AbsListView; import android.widget.BaseExpandableListAdapter; import android.widget.ExpandableListAdapter; import android.widget.ExpandableListView; import android.widget.TextView; public class ListCountries extends ExpandableListActivity implements ExpandableListView.OnChildClickListener{ ExpandableListAdapter mAdapter; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); mAdapter=new MyExpandableListAdapter();; setListAdapter(mAdapter); getExpandableListView().setOnChildClickListener(this); }; @Override public boolean onChildClick(ExpandableListView parent, View v, int groupPosition, int childPosition, long id) { // TODO Auto-generated method stub return false; //return true; } public class MyExpandableListAdapter extends BaseExpandableListAdapter { // Sample data set. children[i] contains the children (String[]) for groups[i]. private String[] groups ={"Africa","Asia","Europe","North America","South America","Oceania","Antartica"}; Resources res = getResources(); private String[] strAfrica=res.getStringArray(R.array.arrayAfrica); private String[] strAsia=res.getStringArray(R.array.arrayAsia); private String[] strEurope=res.getStringArray(R.array.arrayEurope); private String[] strNAmerica=res.getStringArray(R.array.arrayNAmerica); private String[] strSAmerica=res.getStringArray(R.array.arraySAmerica); private String[] strOceania=res.getStringArray(R.array.arrayOceania); private String[] strAntartica=res.getStringArray(R.array.arrayAntartica); private String[][] children = { strAfrica,strAsia,strEurope,strNAmerica,strSAmerica,strOceania,strAntartica }; public Object getChild(int groupPosition, int childPosition) { return children[groupPosition][childPosition]; } public long getChildId(int groupPosition, int childPosition) { return childPosition; } public int getChildrenCount(int groupPosition) { return children[groupPosition].length; } public TextView getGenericView() { // Layout parameters for the ExpandableListView AbsListView.LayoutParams lp = new AbsListView.LayoutParams( ViewGroup.LayoutParams.FILL_PARENT, 55); TextView textView = new TextView(ListCountries.this); textView.setLayoutParams(lp); // Center the text vertically textView.setGravity(Gravity.CENTER_VERTICAL | Gravity.LEFT); textView.setTypeface(Typeface.DEFAULT_BOLD); // Set the text starting position textView.setPadding(36, 0, 0, 0); // textView.setBackgroundResource(R.drawable.colorWhite); // textView.setTextColor(getResources().getColor(R.color.colorBackground)); return textView; } public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) { TextView textView = getGenericView(); textView.setText(getChild(groupPosition, childPosition).toString()); return textView; } public Object getGroup(int groupPosition) { return groups[groupPosition]; } public int getGroupCount() { return groups.length; } public long getGroupId(int groupPosition) { return groupPosition; } @Override public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) { TextView textView = getGenericView(); textView.setText(getGroup(groupPosition).toString()); return textView; } public boolean isChildSelectable(int groupPosition, int childPosition) { return true; } public boolean hasStableIds() { return true; } } 

}

Это должно работать

 @Override public boolean onChildClick(ExpandableListView parent, View v, int groupPosition, int childPosition, long id) { String country = (String)mAdapter.getChild(groupPosition, childPosition); // update the text view with the country return true; }