dialog.show(getChildFragmentManager(), "dialog");
break;
case R.id.action_refresh:
adapter.notifyAllChanged();
break;
<BUG>case R.id.action_toggle_expandable_1:
MyParent parent = adapter.getData().get(1);
parent.setExpandable(!parent.isExpandable());
adapter.notifyParentItemChanged(1);</BUG>
break;

dialog.show(getChildFragmentManager(), "dialog");
break;
case R.id.action_refresh:
adapter.notifyAllChanged();
break;
case R.id.action_toggle_expandable_1:
adapter.toggleExpandable(1);
break;
