package com.example.expendablelistview;

import android.os.Bundle;
import android.app.Activity;
import android.util.SparseArray;
import android.view.Menu;
import android.widget.ExpandableListView;

public class ExpendableListViewActivity extends Activity {


SparseArray<Group> groups = new SparseArray<Group>();

protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.expendable_list_view_layout);
createData();
ExpandableListView listView = (ExpandableListView) findViewById(R.id.listView);
MyExpendablesListAdapter adapter = new MyExpendablesListAdapter(this, groups);
listView.setAdapter(adapter);

}

public void createData() {
for (int j = 0; j < 5; j++) {
Group group = new Group("Pick Ke-" + j);
for (int i = 0; i < 3; i++) {

group.children.add("Sub Item" + i);

}
groups.append(j, group);
}
}


@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.expendable_list_view, menu);
return true;
}

}

package com.example.expendablelistview;

import android.widget.BaseExpandableListAdapter;
import android.app.Activity;
import android.util.SparseArray;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.CheckedTextView;
import android.widget.TextView;
import android.widget.Toast;


public class MyExpendablesListAdapter extends BaseExpandableListAdapter {

private final SparseArray<Group> groups;
public LayoutInflater inflater;
public Activity activity;

public MyExpendablesListAdapter(Activity act, SparseArray<Group> groups) {
activity = act;
this.groups = groups;
inflater = act.getLayoutInflater();
}

@Override
public Object getChild(int groupPosition, int childPosition) {
return groups.get(groupPosition).children.get(childPosition);
}

@Override
public long getChildId(int groupPosition, int childPosition) {
return 0;
}

@Override
public View getChildView(int groupPosition, final int childPosition,
boolean isLastChild, View convertView, ViewGroup parent) {
final String children = (String) getChild(groupPosition, childPosition);
TextView text = null;
if (convertView == null) {
convertView = inflater.inflate(R.layout.listrow_detail, null);
}
text = (TextView) convertView.findViewById(R.id.textView1);
text.setText(children);
convertView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(activity, children,
Toast.LENGTH_SHORT).show();
}
});
return convertView;
}

@Override
public int getChildrenCount(int groupPosition) {
return groups.get(groupPosition).children.size();
}

@Override
public Object getGroup(int groupPosition) {
return groups.get(groupPosition);
}

@Override
public int getGroupCount() {
return groups.size();
}

@Override
public void onGroupCollapsed(int groupPosition) {
super.onGroupCollapsed(groupPosition);
}

@Override
public void onGroupExpanded(int groupPosition) {
super.onGroupExpanded(groupPosition);
}

@Override
public long getGroupId(int groupPosition) {
return 0;
}

@Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
if (convertView == null) {
convertView = inflater.inflate(R.layout.listrow_group, null);
}
Group group = (Group) getGroup(groupPosition);
((CheckedTextView) convertView).setText(group.string);
((CheckedTextView) convertView).setChecked(isExpanded);
return convertView;
}

@Override
public boolean hasStableIds() {
return false;
}

@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return false;
}
}

package com.example.expendablelistview;

import java.util.ArrayList;
import java.util.List;

public class Group {

public String string;
public final List<String> children = new ArrayList<String>();

public Group(String string) {
this.string = string;
}
}