Android实现多级树形菜单并支持多选功能

public class Node implements Serializable {
 private Node parent = null; // 父节点
 private List<Node> childrens = new ArrayList<Node>();//子节点
 private String title;//节点显示文字
 private String value;//节点显示值
 private boolean isChecked = false; //是否被选中
 private boolean isExpand = true;//是否处于扩展状态
 private boolean hasCheckBox = true;//是否有复选框
 private String parentId = null;
 private String curId = null;
 private boolean isVisiable = true;
 //自己加的，父节点集合
 private List<Node> parents = new ArrayList<>();
 /**
 * 设置节点值
 *
 * @param parentId
 *  TODO
 * @param curId
 *  TODO
 */
 public Node(String title,String value, String parentId,String curId) {
 // TODO Auto-generated constructor stub
 this.title = title;
 this.value = value;
 this.parentId = parentId;
 //this.icon = iconId;
 this.curId = curId;
 }
 public List<Node> getParents() {
 return parents;
 }
 /**
 * 得到父节点
 * @return
 *
 */
 public Node getParent() {
 return parent;
 }
 /**
 * 设置父节点
 * @param parent
 *
 */
 public void setParent(Node parent) {
 this.parent = parent;
 }
 /**
 * 得到子节点
 * @return
 *
 */
 public List<Node> getChildrens() {
 return childrens;
 }
 /**
 * 是否根节点
 * @return
 *
 */
 public boolean isRoot(){
 return parent ==null?true:false;
 }
 /**
 * 是否被选中
 * @return
 *
 */
 public boolean isChecked() {
 return isChecked;
 }
 public void setChecked(boolean isChecked) {
 this.isChecked = isChecked;
 }
 /**
 * 是否是展开状态
 * @return
 *
 */
 public boolean isExplaned() {
 return isExpand;
 }
 /**
 * 设置展开状态
 * @param isExplaned
 *
 */
 public void setExplaned(boolean isExplaned) {
 this.isExpand = isExplaned;
 }
 /**
 * 是否有复选框
 * @return
 *
 */
 public boolean hasCheckBox() {
 return hasCheckBox;
 }
 /**
 * 设置是否有复选框
 * @param hasCheckBox
 *
 */
 public void setHasCheckBox(boolean hasCheckBox) {
 this.hasCheckBox = hasCheckBox;
 }
 /**
 * 得到节点标题
 * @return
 *
 */
 public String getTitle() {
 return title;
 }
 /**
 * 设置节点标题
 * @param title
 *
 */
 public void setTitle(String title) {
 this.title = title;
 }
 /**
 * 得到节点值
 * @return
 *
 */
 public String getValue() {
 return value;
 }
 /**
 * 设置节点值
 * @param value
 *
 */
 public void setValue(String value) {
 this.value = value;
 }
 /**
 * 增加一个子节点
 * @param node
 *
 */
 public void addNode(Node node){
 if(!childrens.contains(node)){
  childrens.add(node);
 }
 }
 /**
 * 移除一个子节点
 * @param node
 *
 */
 public void removeNode(Node node){
 if(childrens.contains(node))
  childrens.remove(node);
 }
 /**
 * 移除指定位置的子节点
 * @param location
 *
 */
 public void removeNode(int location){
 childrens.remove(location);
 }
 /**
 * 清除所有子节点
 *
 */
 public void clears(){
 childrens.clear();
 }
 /**
 * 判断给出的节点是否当前节点的父节点
 * @param node
 * @return
 *
 */
 public boolean isParent(Node node){
 if(parent == null)return false;
 if(parent.equals(node))return true;
 return parent.isParent(node);
 }
 /**
 * 递归获取当前节点级别
 * @return
 *
 */
 public int getLevel(){
 return parent ==null?0:parent.getLevel()+1;
 }
 /**
 * 父节点是否处于折叠的状态
 * @return
 *
 */
 public boolean isParentCollapsed(){
 if(parent ==null)return false;
 if(!parent.isExplaned())return true;
 return parent.isParentCollapsed();
 }
 /**
 * 是否叶节点（没有展开下级的几点）
 * @return
 *
 */
 public boolean isLeaf(){
 return childrens.size()<1?true:false;
 }
 /**
 * 返回自己的id
 * @return
 **/
 public String getCurId() {
 // TODO Auto-generated method stub
 return curId;
 }
 /**
 * 返回的父id
 * @return
 **/
 public String getParentId() {
 // TODO Auto-generated method stub
 return parentId;
 }
}

List <NodeResource> list = new ArrayList<NodeResource>();
 NodeResource n1 = new NodeResource(""+-1, ""+0, "全部城市", "dfs");//, R.drawable.icon_department
 list.add(n1);
 NodeResource n3 = new NodeResource(""+0, ""+1, "北京", "dfs");
 list.add(n3);
 NodeResource n4 = new NodeResource(""+1, ""+2, "金刚狼军团", "dfs");
 list.add(n4);
 NodeResource n5 = new NodeResource(""+1, ""+3, "蚂蚁军团", "dfs");
 list.add(n5);
 NodeResource n6 = new NodeResource(""+1, ""+4, "大象军团", "dfs");
 list.add(n6);
 NodeResource n7 = new NodeResource(""+2,""+5, "张三", "dfs");
 list.add(n7);
 NodeResource n8 = new NodeResource(""+2,""+6, "李四", "dfs");
 list.add(n8);
 NodeResource n9 = new NodeResource(""+0,""+7, "天津", "dfs");
 list.add(n9);
 NodeResource n10 = new NodeResource(""+7,""+8, "老鼠军团", "dfs");
 list.add(n10);
 NodeResource n11 = new NodeResource(""+8,""+9, "王五", "dfs");
 list.add(n11);
 NodeResource n12 = new NodeResource(""+8,""+10, "赵六", "dfs");
 list.add(n12);
 return list;

package cn.thinkmore.test;
import java.util.ArrayList;
import java.util.List;
import android.content.Context;
import android.util.Log;
import android.view.View.OnClickListener;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.ImageView;
import android.widget.TextView;
public class TreeAdapter extends BaseAdapter {
 private Context con;
 private LayoutInflater lif;
 public List<Node> all = new ArrayList<Node>();//展示
 private List<Node> cache = new ArrayList<Node>();//缓存
 private TreeAdapter tree = this;
 boolean hasCheckBox;
 private int expandIcon = -1;//展开图标
 private int collapseIcon = -1;//收缩图标
 ViewItem vi = null;
// //存储checkbox选中的集合
// private List<>
 /**
 * 构造方法
 */
 public TreeAdapter(Context context,List<Node>rootNodes){
 this.con = context;
 this.lif = (LayoutInflater)con.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
 for(int i=0;i<rootNodes.size();i++){
  addNode(rootNodes.get(i));
 }
 }
 /**
 * 把一个节点上的所有的内容都挂上去
 * @param node
 *
 */
 public void addNode(Node node){
 all.add(node);
 cache.add(node);
 if(node.isLeaf())return;
 for(int i = 0;i<node.getChildrens().size();i++){
  addNode(node.getChildrens().get(i));
 }
 }
 /**
 * 设置展开收缩图标
 * @param expandIcon
 * @param collapseIcon
 *
 */
 public void setCollapseAndExpandIcon(int expandIcon,int collapseIcon){
 this.collapseIcon = collapseIcon;
 this.expandIcon = expandIcon;
 }
 /**
 * 一次性对某节点的所有节点进行选中or取消操作
 *
 *
 */
 public void checkNode(Node n,boolean isChecked){
 n.setChecked(isChecked);
 for(int i =0 ;i<n.getChildrens().size();i++){
  checkNode((Node) n.getChildrens().get(i), isChecked);
 }
 //徐强加的代码
 unCheckNode(n, isChecked);
 }
 public void quanXuanClick(Node n){
 n.setChecked(true);
 for(int i =0 ;i<n.getChildrens().size();i++){
  quanXuanClick(n.getChildrens().get(i));
 }
 }
 public void quXiaoClick(Node n){
 n.setChecked(false);
 for(int i =0 ;i<n.getChildrens().size();i++){
  quXiaoClick(n.getChildrens().get(i));
 }
 }
 //徐强加的代码
 public void unCheckNode(Node n, boolean isChecked){
 boolean flag = false;
 n.setChecked(isChecked);
 if(n.getParent() != null ){
  //if(n.getParent().getChildrens().size() != 0) {
  Log.d("parentSize", n.getParent().getChildrens().get(0).isChecked() + "");
  for (int i = 0; i < n.getParent().getChildrens().size(); i++) {
  if((n.getParent().getChildrens().get(i)) != n && (n.getParent().getChildrens().get(i).isChecked() != true)){
   flag = true;
   break;
  }
  }
  if(!flag) {
  unCheckNode(n.getParent(), isChecked);
  }
  //}
 }
 }
 /**
 * 获取所有选中节点
 * @return
 *
 */
 public List<Node>getSelectedNode(){
 Log.d("getSelectedNode", "我被执行了！");
 List<Node>checks =new ArrayList<Node>() ;
 for(int i = 0;i<cache.size();i++){
  Node n =(Node)cache.get(i);
  if(n.isChecked())
  checks.add(n);
 }
 return checks;
 }
 /**
 * 设置是否有复选框
 * @param hasCheckBox
 *
 */
 public void setCheckBox(boolean hasCheckBox){
 this.hasCheckBox = hasCheckBox;
 }
 /**
 * 控制展开缩放某节点
 * @param location
 *
 */
 public void ExpandOrCollapse(int location){
 Node n = all.get(location);//获得当前视图需要处理的节点 
 if(n!=null)//排除传入参数错误异常
 {
  if(!n.isLeaf()){
  n.setExplaned(!n.isExplaned());// 由于该方法是用来控制展开和收缩的，所以取反即可
  filterNode();//遍历一下，将所有上级节点展开的节点重新挂上去
  this.notifyDataSetChanged();//刷新视图
  }
 }
 }
 /**
 * 设置展开等级
 * @param level
 *
 */
 public void setExpandLevel(int level){
 all.clear();
 for(int i = 0;i<cache.size();i++){
  Node n = cache.get(i);
  if(n.getLevel()<=level){
  if(n.getLevel()<level)
   n.setExplaned(true);
  else
   n.setExplaned(false);
  all.add(n);
  }
 }
 }
 /* 清理all,从缓存中将所有父节点不为收缩状态的都挂上去*/
 public void filterNode(){
 all.clear();
 for(int i = 0;i<cache.size();i++){
  Node n = cache.get(i);
  if(!n.isParentCollapsed()||n.isRoot())//凡是父节点不收缩或者不是根节点的都挂上去
  all.add(n);
 }
 }
 /* (non-Javadoc)
 * @see android.widget.Adapter#getCount()
 */
 @Override
 public int getCount() {
 // TODO Auto-generated method stub
 return all.size();
 }
 /* (non-Javadoc)
 * @see android.widget.Adapter#getItem(int)
 */
 @Override
 public Object getItem(int location) {
 // TODO Auto-generated method stub
 return all.get(location);
 }
 /* (non-Javadoc)
 * @see android.widget.Adapter#getItemId(int)
 */
 @Override
 public long getItemId(int location) {
 // TODO Auto-generated method stub
 return location;
 }
 /* (non-Javadoc)
 * @see android.widget.Adapter#getView(int, android.view.View, android.view.ViewGroup)
 */
 @Override
 public View getView(int location, View view, ViewGroup viewgroup) {
 final Node n = all.get(location);
 //ViewItem vi = null;
 if(view == null){
  view = lif.inflate(R.layout.list_item, null);
  vi = new ViewItem();
  vi.cb = (CheckBox)view.findViewById(R.id.cb);
  vi.flagIcon = (ImageView)view.findViewById(R.id.ivec);
  vi.tv = (TextView)view.findViewById(R.id.itemvalue);
  vi.cb.setOnClickListener(new OnClickListener() {
  private Node mCheckBoxN;
  @Override
  public void onClick(View v) {
   mCheckBoxN = (Node) v.getTag();
   checkNode(mCheckBoxN, ((CheckBox) v).isChecked());
   //unCheckNode(n, ((CheckBox) v).isChecked());
   tree.notifyDataSetChanged();
  }
  });
  view.setTag(vi);
 }
 else{
  vi = (ViewItem)view.getTag();
  if(vi ==null)
  System.out.println();
 }
 if(n!=null){
  if(vi==null||vi.cb==null)
  System.out.println();
  vi.cb.setTag(n);
  vi.cb.setChecked(n.isChecked());
  //叶节点不显示展开收缩图标
  if(n.isLeaf()){
  vi.flagIcon.setVisibility(View.GONE);
  }
  else{
  vi.flagIcon.setVisibility(View.VISIBLE);
  if(n.isExplaned()){
   if(expandIcon!=-1){
   vi.flagIcon.setImageResource(expandIcon);
   }
  }
  else{
   if(collapseIcon!=-1){
   vi.flagIcon.setImageResource(collapseIcon);
   }
  }
  }
  //设置是否显示复选框
  if(n.hasCheckBox()&&n.hasCheckBox()){
  vi.cb.setVisibility(View.VISIBLE);
  }
  else{
  vi.cb.setVisibility(View.GONE);
  }
  //显示文本
  vi.tv.setText(n.getTitle());
  // 控制缩进
  view.setPadding(30*n.getLevel(), 3,3, 3);
 }
 return view;
 }
 public class ViewItem{
 private CheckBox cb;
 //private ImageView icon;
 private ImageView flagIcon;
 private TextView tv;
 }
}