/**
* 相应ListView的点击事件 展开或关闭某节点
*
* @param position
*/
public void expandOrCollapse(int position) {
KLNode n = mNodes.get(position);
if (n != null) // 排除传入参数错误异常
{
if (!n.isLeaf()) {
n.setExpand(!n.isExpand());
mNodes = KLTreeHelper.filterVisibleNode(mAllNodes);
notifyDataSetChanged(); // 刷新视图
}
}
}
/**
* @param mTree
* @param context
* @param datas
* @param defaultExpandLevel 默认展开几级树
* @throws IllegalArgumentException
* @throws IllegalAccessException
*/
public KLTreeListViewAdapter(
ListView mTree, Context context, List<T> datas, int defaultExpandLevel)
throws IllegalArgumentException, IllegalAccessException {
mContext = context;
/** 对所有的Node进行排序 */
mAllNodes = KLTreeHelper.getSortedNodes(datas, defaultExpandLevel);
/** 过滤出可见的Node */
mNodes = KLTreeHelper.filterVisibleNode(mAllNodes);
mInflater = LayoutInflater.from(context);
/** 设置节点点击时，可以展开以及关闭；并且将ItemClick事件继续往外公布 */
mTree.setOnItemClickListener(
new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
expandOrCollapse(position);
if (onTreeNodeClickListener != null) {
onTreeNodeClickListener.onClick(mNodes.get(position), position);
}
}
});
}