ExpandabeListView Auto Collapse

I am not able to close a previously expanded group on expanding a new group. I have read similar questions, but I'm unable to extract concept from them. I tried using the collapseG

Solution 1:

Hi Please try below code.

---

int lastExpandedGroupPosition = 0;   

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    final ExpandableListView listView = (ExpandableListView) findViewById(R.id.listView);

    listView.setOnGroupExpandListener(new OnGroupExpandListener() {

        @Override
        public void onGroupExpand(int groupPosition) {

            // TODO Auto-generated method stub
            if (groupPosition != lastExpandedGroupPosition) {
                listView.collapseGroup(lastExpandedGroupPosition);

            }
            lastExpandedGroupPosition = groupPosition;

        }
    });

    adapter = new ExpandableListAdapter(this, new ArrayList<String>(),
            new ArrayList<ArrayList<Vehicle>>());

    // Set this blank adapter to the list view
    listView.setAdapter(adapter);


}

---

import below line.

---

import android.widget.ExpandableListView.OnGroupExpandListener;

---