Android TreeView 树形组织结构 带复选框

之前做项目的时候做人员组织架构时候需要用到,同样可以用于目录视图。简单搜了一下没有合适的,只找到一个基础的有瑕疵的树形结构,就在基础上改了增加了复选框以及简化了部分代码,。下面上演示效果图,时长25秒,手机卡见谅。

复选框有两种设计模式:

1、子节点选中则父节点选中,适合多级多item下方便了解哪些被选中;

2、子节点全部选中父节点才选中,更符合日常逻辑,适合少数量以及少层级。

下面上主要代码:

首先上MainActivity,主要作用上加载layout以及读取数据。实际中一般从数据库获取。命名较为随意请见谅。

public class MainActivity extends AppCompatActivity {

    List list = new ArrayList();
    private TreeListView listView;
    private RelativeLayout relativeLayout, rl;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        relativeLayout = (RelativeLayout) findViewById(R.id.main_relative_layout);
        Context context=MainActivity.this;
        rl = new RelativeLayout(context);
        rl.setLayoutParams(new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.MATCH_PARENT));
        listView = new TreeListView(context, initNodeTree());
        listView.setLayoutParams(new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.MATCH_PARENT));
        relativeLayout.addView(listView);
    }
    public List initNodeTree() {

        List member_list =new ArrayList();
//        -1表示为根节点,id的作用为标识对象身份,第三个参数此例子中是text文本
        member_list.add(new Node("" + -1, "1" , "111"));
        member_list.add(new Node(""+1 , "2" , "222"));
        member_list.add(new Node("" + -1, "3" , "333"));
        member_list.add(new Node("" + 1, "4" , "444"));
        member_list.add(new Node("" + 4, "5" , "555"));
        member_list.add(new Node("" + 4, "6" , "666"));
        member_list.add(new Node("" + 4, "7" , "777"));
        member_list.add(new Node("" + 7, "8" , "888"));
        member_list.add(new Node("" + 8, "9" , "999"));
        member_list.add(new Node("" + 8, "10" , "101010"));
        list.addAll(member_list);
        return list;
    }
}

 

接下来是Node类:

Node对象当前主要有父节点Id,自身id以及值组成,自身id自加,父节点id,使用过程中根据实际使用增加成员属性。比如作为组织架构,标识为人名还是一个空的部门,当前对象为第几层级等等,以及从数据库中获取时候直接设置默认选中。

public class Node implements Serializable {
	private Node parent = null; // 父节点
	private List childrens = new ArrayList();//子节点
	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;


	//父节点集合
	private List parents = new ArrayList<>();

	/**
	 * 设置节点值
	 *
	 * @param parentId
	 *            TODO
	 * @param curId
	 *            TODO
	 */
	public Node( String parentId, String curId, String value) {
		// TODO Auto-generated constructor stub

		this.value = value;
		this.parentId = parentId;
		this.curId = curId;

	}

	public List getParents() {
		return parents;
	}

	public void setParents(Node node) {
		if(node != null) {
			if (!parents.contains(node)) {
				parents.add(node);
			}
		}
	}

	/**
	 * 得到父节点
	 */
	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 getChildrens() {
		return childrens;
	}
	/**
	 * pandu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;
	}
}

下面是核心代码:

两种选择模式在treeAdapter中进行修改。

package com.example.administrator.treeview.treeView;


import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.CheckBox;
import android.widget.ImageView;
import android.widget.TextView;


import com.example.administrator.treeview.R;

import java.util.ArrayList;
import java.util.List;

public class TreeAdapter extends BaseAdapter {
	private Context con;
	private LayoutInflater lif;
	public List all = new ArrayList();//展示
	private List cache = new ArrayList();//缓存,记录点状态
	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 rootNodes){
		this.con = context;
		this.lif = (LayoutInflater)con.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
		for(int i=0;i getSelectedNode(){
		Log.d("getSelectedNode", "我被执行了!");
		List checks =new ArrayList()	;
		for(int i = 0;i selectedNode){
		for (int i=0;i

接下来是TreeListView: 

package com.example.administrator.treeview.treeView;

import android.content.Context;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.RelativeLayout;
import com.example.administrator.treeview.R;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;

public class TreeListView extends ListView {
	ListView treelist = null;
	TreeAdapter ta = null;
	public List mNodeList;
	private List checkList;


	public TreeListView(final Context context, List res) {
		super(context);
		treelist = this;
		treelist.setFocusable(false);
		treelist.setBackgroundColor(0xffffff);
		treelist.setFadingEdgeLength(0);
		treelist.setLayoutParams(new ViewGroup.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.MATCH_PARENT));

		treelist.setOnItemClickListener(new OnItemClickListener() {

			@Override
			public void onItemClick(AdapterView parent, View view,
                                    int position, long id) {
				((TreeAdapter) parent.getAdapter()).ExpandOrCollapse(position);
			}
		});
		initNode(context, initNodRoot(res), true, -1, -1, 0);
	}

	// 使用 onMeasure 方法,来解决尺寸高度的问题,以及事件冲突的问题;
	protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
		heightMeasureSpec = MeasureSpec.makeMeasureSpec(
				Integer.MAX_VALUE>>2,
				MeasureSpec.AT_MOST
		);
		super.onMeasure(widthMeasureSpec, heightMeasureSpec);
	}
//	/**
//	 *
//	 * @param context
//	 *            响应监听的上下文
//	 * @param root
//	 *            已经挂好树的根节点
//	 * @param hasCheckBox
//	 *            是否整个树有复选框
//	 * @param tree_ex_id
//	 *            展开iconid -1会使用默认的
//	 * @param tree_ec_id
//	 *            收缩iconid -1会使用默认的
//	 * @param expandLevel
//	 *            初始展开等级
//	 *
//	 */
	public List initNodRoot(List res) {
		ArrayList list = new ArrayList();
		ArrayList roots = new ArrayList();
		Map nodemap = new LinkedHashMap();
		for (int i = 0; i < res.size(); i++) {
			Node nr = res.get(i);
			Node n = new Node( nr.getParentId(), nr.getCurId(), nr.getValue());
			nodemap.put(n.getCurId(), n);// 生成map树
		}
		Set set = nodemap.keySet();
		Collection collections = nodemap.values();
		Iterator iterator = collections.iterator();
		while (iterator.hasNext()) {// 添加所有根节点到root中
			Node n = iterator.next();
			if (!set.contains(n.getParentId()))
				roots.add(n);
			list.add(n);
		}
		for (int i = 0; i < list.size(); i++) {
			Node n = list.get(i);
			for (int j = i + 1; j < list.size(); j++) {
				Node m = list.get(j);
				if (m.getParentId() .equals( n.getCurId())) {
					n.addNode(m);
					m.setParent(n);
					m.setParents(n);
				} else if (m.getCurId() .equals( n.getParentId())) {
					m.addNode(n);
					n.setParent(m);
					m.setParents(m);
				}
			}
		}
		return roots;
	}

	public void initNode(Context context, List root, boolean hasCheckBox,
                         int tree_ex_id, int tree_ec_id, int expandLevel) {
		ta = new TreeAdapter(context, root);
		//获取
		mNodeList = ta.all;
		// 设置整个树是否显示复选框
		ta.setCheckBox(true);
		// 设置展开和折叠时图标
		int tree_ex_id_ = (tree_ex_id == -1) ? R.drawable.down_icon : tree_ex_id;
		int tree_ec_id_ = (tree_ec_id == -1) ? R.drawable.right_icon : tree_ec_id;
		ta.setCollapseAndExpandIcon(tree_ex_id_, tree_ec_id_);
		// 设置默认展开级别
		ta.setExpandLevel(expandLevel);
		this.setAdapter(ta);
	}
	/* 返回当前所有选中节点的List数组 */
	public List get() {
		Log.d("get", ta.getSelectedNode().size() + "");
		return ta.getSelectedNode();
	}
public void setSelect(List allSelect){
	ta.setSelectedNode(allSelect);
}}

资源地址:

https://download.csdn.net/download/weixin_40299948/11157435

github链接:

https://github.com/Black-Mango/treeListView

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