android ExpandableListView 如何给child 添加单击事件

//获得控件
ExpandableListView mListView = (ExpandableListView) findViewById(R.id.X);

//添加childOnclick监听
mListView.setOnChildClickListener(childListener);

OnChildClickListener childListener = new OnChildClickListener() {
@Override
　　public boolean onChildClick(ExpandableListView parent, View v,
   　　int groupPosition, int childPosition, long id) {
　　}
};


/**
 * 子集是否可选(BaseExpandableListAdapter 中注意下这一项)
 */
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {    
     return true;
}