//增加treeview包引用 compile 'org.chen.treeview:treeview:1.0.1' 

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" tools:context="com.chen.treedemo.MainActivity"> <Button android:id="@+id/btn_select" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="选择节点" /> <TextView android:id="@+id/tv_result" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="10dp" android:text="结果列表" /> //引入控件 <com.chen.treeview.TreeRecyclerView android:id="@+id/tree_view" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_marginTop="10dp"> </com.chen.treeview.TreeRecyclerView> </LinearLayout> 

 //测试数据模型, 必须添加@NodeId , @NodeName 两个注解字段 public class TestModel{//通过注解的方式，进行model转换 @NodeId //必填字段 public String id; @NodeName //必填字段 public String name; @NodeLabel //可选字段 public String label; @NodePid //必填字段 public String parentId; @NodeChild public List<TestModel> child; //非叶子节点必填字段 public String other1; public String other2; public int ohter3} 

 public class MainActivity extends AppCompatActivity{private TreeRecyclerView tree_view; private Button btn_select; private TextView tv_result; @Override protected void onCreate(Bundle savedInstanceState){super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); tree_view = (TreeRecyclerView) findViewById(R.id.tree_view); //传入数据，以及对应的模式 tree_view.setData(generateList(), TreeRecyclerView.MODE_SINGLE_SELECT); tv_result = (TextView) findViewById(R.id.tv_result); btn_select = (Button) findViewById(R.id.btn_select); btn_select.setOnClickListener(new View.OnClickListener(){@Override public void onClick(View v){StringBuffer buffer = new StringBuffer(); ArrayList<TestModel> list = new ArrayList<>(); //获取当前已经选中的数据， 传入进去list类型，必须与存储数据类型相同 tree_view.getSelectedItems(list); for (TestModel model : list){buffer.append(model.name + " ")} tv_result.setText(buffer.toString())} })} //手动生成的测试数据 private List<TestModel> generateList(){ArrayList<TestModel> result = new ArrayList<>(); TestModel model1 = new TestModel(); model1.id = "1"; model1.name = "上海"; model1.label = "魔都"; model1.parentId = ""; model1.child = null; TestModel model2 = new TestModel(); model2.id = "2"; model2.name = "北京"; model2.label = "帝都"; model2.parentId = ""; model2.child = null; TestModel model3 = new TestModel(); model3.id = "3"; model3.name = "江苏"; model3.label = "省"; model3.parentId = ""; model3.child = null; TestModel model4 = new TestModel(); model4.id = "4"; model4.name = "浙江"; model4.label = "省"; model4.parentId = ""; model4.child = null; TestModel model5 = new TestModel(); model5.id = "5"; model5.name = "天津"; model5.label = "直辖市"; model5.parentId = ""; model5.child = null; TestModel model31 = new TestModel(); model31.id = "31"; model31.name = "南京"; model31.label = "省会城市"; model31.parentId = "3"; model31.child = null; TestModel model32 = new TestModel(); model32.id = "32"; model32.name = "苏州"; model32.label = "牛B城市"; model32.parentId = "3"; model32.child = null; TestModel model33 = new TestModel(); model33.id = "33"; model33.name = "无锡"; model33.label = "灵山大佛"; model33.parentId = "3"; model33.child = null; TestModel model41 = new TestModel(); model41.id = "41"; model41.name = "杭州"; model41.label = "省会城市"; model41.parentId = "4"; model41.child = null; TestModel model42 = new TestModel(); model42.id = "42"; model42.name = "温州"; model42.label = "炒房团+皮革厂"; model42.parentId = "4"; model42.child = null; TestModel model311 = new TestModel(); model311.id = "311"; model311.name = "玄武区"; model311.label = "玄武湖好美"; model311.parentId = "31"; model311.child = null; TestModel model312 = new TestModel(); model312.id = "312"; model312.name = "建邺区"; model312.label = "河西新城，房价真贵"; model312.parentId = "31"; model312.child = null; TestModel model411 = new TestModel(); model411.id = "411"; model411.name = "西湖区"; model411.label = "西湖区好美，湖边来一套别墅"; model411.parentId = "41"; model411.child = null; TestModel model412 = new TestModel(); model412.id = "412"; model412.name = "滨江区"; model412.label = "科技新城，阿里网易"; model412.parentId = "41"; model412.child = null; //杭州市 ArrayList<TestModel> list_41 = new ArrayList<>(); list_41.add(model411); list_41.add(model412); model41.child = list_41; //南京市 ArrayList<TestModel> list_31 = new ArrayList<>(); list_31.add(model311); list_31.add(model312); model31.child = list_31; //江苏省 ArrayList<TestModel> list_3 = new ArrayList<>(); list_3.add(model31); list_3.add(model32); list_3.add(model33); model3.child = list_3; //江苏省 ArrayList<TestModel> list_4 = new ArrayList<>(); list_4.add(model41); list_4.add(model42); model4.child = list_4; result.add(model1); result.add(model2); result.add(model3); result.add(model4); result.add(model5); return result} } 

public class TreeRecyclerView extends FrameLayout{public final static int MODE_SINGLE_SELECT = 1; //单选模式 public final static int MODE_MULTI_SELECT = 2; //无限制，多选模式 public final static int MODE_DEPEND_SELECT = 3; //父子节点不可同选，多选模式 public final static int MODE_CLICK_SELECT = 4; //选中跳转模式 private RecyclerView mRecyclerView; private TreeRecyclerAdapter mAdapter; public TreeRecyclerView(Context context){super(context); initView(context)} public TreeRecyclerView(Context context, AttributeSet attrs){super(context, attrs); initView(context)} public TreeRecyclerView(Context context, AttributeSet attrs, int defStyleAttr){super(context, attrs, defStyleAttr); initView(context)} private void initView(Context context){mRecyclerView = new RecyclerView(context); mRecyclerView.setLayoutManager(new LinearLayoutManager(context)); LayoutParams lp = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT); addView(mRecyclerView, lp); mAdapter = new TreeRecyclerAdapter<>(mRecyclerView.getContext())} /** * 初始化树形折叠控件数据 * * * T 类型 示例 * * public static class TestModel{* * @NodeId public String id; //必填字段 * @NodeName public String name; //必填字段 * @NodeLabel public String label; * @NodePid public String parentId; //父节点id * @NodeChild public List<TestModel> child; //child用来表示层级关系, child为空，则表示叶子节点 * ... * others * ... * } */ public <T> void setData(List<T> list, int mode){ArrayList<Node<T>> nodeList = new ArrayList<>(); try{nodeList = NodeDataConverter.convertToNodeList(list)} catch (IllegalAccessException e){e.printStackTrace()} catch (Exception e){e.printStackTrace()} setMode(mode); mAdapter.addAllData(nodeList); mRecyclerView.setAdapter(mAdapter)} /** * 设置点击事件, MODE_CLICK_SELECT模式下需要使用 */ public void setOnItemClickListener(OnNodeItemClickListener listener){mAdapter.setOnItemClickListener(listener)} /** * 获取选中的内容 * * @param <T> * @return */ public <T> void getSelectedItems(List<T> list){mAdapter.getSelectedItems(list)} /** * 设置折叠控件的选择模式 * * @param mode */ private void setMode(int mode){if (mode != MODE_SINGLE_SELECT && mode != MODE_MULTI_SELECT && mode != MODE_DEPEND_SELECT && mode != MODE_CLICK_SELECT){return} mAdapter.setMode(mode)} } 

class TreeRecyclerAdapter<T> extends RecyclerView.Adapter<TreeBaseViewHolder>{private Context mContext; private List<Node<T>> mVisibleNodes; private List<Node<T>> mRootNodes; private OnNodeItemClickListener mOnNodeItemClickListener; private int mSelectMode = TreeRecyclerView.MODE_SINGLE_SELECT; private OnNodeSwitchListener mOnNodeSwitchListener = new OnNodeSwitchListener(){@Override public void onExpand(Node node, int position){NodeDataConverter.expandNode(NodeDataConverter.filterNodeById(node.getId(), mRootNodes)); rearrangeVisibleNodes()} @Override public void onShrink(Node node, int position){NodeDataConverter.shrinkNode(NodeDataConverter.filterNodeById(node.getId(), mRootNodes)); rearrangeVisibleNodes()} }; private OnNodeCheckListener mOnNodeCheckListener = new OnNodeCheckListener(){@Override public void onCheck(boolean isChecked, int position, Node node){if (mOnNodeItemClickListener != null){mOnNodeItemClickListener.onItemClick(node.getContent())} NodeDataConverter.checkNode(node.getId(), isChecked, mSelectMode, mVisibleNodes); notifyDataSetChanged()} }; public TreeRecyclerAdapter(Context context){mContext = context; mVisibleNodes = new ArrayList<>(); mRootNodes = new ArrayList<>()} /** * 填充数据 * * @param nodes */ public void addAllData(List<Node<T>> nodes){if (nodes != null && !nodes.isEmpty()){mRootNodes.clear(); mRootNodes.addAll(nodes)} for (Node<T> item : nodes){filterVisibleNodes(item)} notifyDataSetChanged()} /** * 设置模式 * * @param mode */ public void setMode(int mode){mSelectMode = mode} /** * 设置点击事件 */ public void setOnItemClickListener(OnNodeItemClickListener listener){mOnNodeItemClickListener = listener} /** * 返回当前选择数据 * * @return */ public <T> void getSelectedItems(List<T> list){List<Node<T>> resultNodeList = new ArrayList<>(); for (Node item : mRootNodes){resultNodeList.addAll(NodeDataConverter.filterCheckedNodeList(item))} for (Node<T> item : resultNodeList){list.add(item.getContent())} } @Override public TreeBaseViewHolder onCreateViewHolder(ViewGroup parent, int viewType){View view; switch (viewType){case Node.TREE_NODE: view = LayoutInflater.from(mContext).inflate( R.layout.listitem_tree_node, parent, false); return new TreeNodeViewHolder<T>(view); case Node.TREE_LEAF: view = LayoutInflater.from(mContext).inflate( R.layout.listitem_tree_leaf, parent, false); return new TreeLeafViewHolder<T>(view); default: return null} } @Override public void onBindViewHolder(TreeBaseViewHolder holder, int position){switch (getItemViewType(position)){case Node.TREE_NODE: TreeNodeViewHolder<T> nodeViewHolder = (TreeNodeViewHolder<T>) holder; nodeViewHolder.bindView(mVisibleNodes.get(position), position, mOnNodeSwitchListener, mOnNodeCheckListener); break; case Node.TREE_LEAF: TreeLeafViewHolder<T> leafViewHolder = (TreeLeafViewHolder<T>) holder; leafViewHolder.bindView(mVisibleNodes.get(position), position, mOnNodeCheckListener); break; default: break} } @Override public int getItemCount(){return mVisibleNodes.size()} @Override public int getItemViewType(int position){return mVisibleNodes.get(position).getType()} /** * 根据visible属性，重新刷新，可视节点 */ private void rearrangeVisibleNodes(){if (mRootNodes == null || mRootNodes.size() <= 0){return} mVisibleNodes.clear(); for (Node<T> node : mRootNodes){filterVisibleNodes(node)} notifyDataSetChanged()} /** * 将展开节点归结到可视节点中, 递归总是从根节点开始 * * @return */ private void filterVisibleNodes(Node<T> node){mVisibleNodes.add(node); if (node.isExpanded()){if (node.getChildren() != null){for (Node<T> item : node.getChildren()){filterVisibleNodes(item)} } } } }