Android实现多级树形选择列表
package com.xiaoyehai.multileveltreelist.treelist;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.ListView;
import java.util.ArrayList;
import java.util.List;
/**
* Created by xiaoyehai on 2018/7/11 0011.
*/
public abstract class TreeListViewAdapter extends BaseAdapter {
protected Context mContext;
/**
* 默认不展开
*/
private int defaultExpandLevel = 0;
/**
* 展开与关闭的图片
*/
private int iconExpand = -1, iconNoExpand = -1;
/**
* 存储所有的Node
*/
protected List<Node> mAllNodes = new ArrayList<>();
protected LayoutInflater mInflater;
/**
* 存储所有可见的Node
*/
protected List<Node> mNodes = new ArrayList<>();
/**
* 点击的回调接口
*/
private OnTreeNodeClickListener onTreeNodeClickListener;
public void setOnTreeNodeClickListener(OnTreeNodeClickListener onTreeNodeClickListener) {
this.onTreeNodeClickListener = onTreeNodeClickListener;
}
public TreeListViewAdapter(ListView listView, Context context, List<Node> datas, int defaultExpandLevel, int iconExpand, int iconNoExpand) {
this.mContext = context;
this.defaultExpandLevel = defaultExpandLevel;
this.iconExpand = iconExpand;
this.iconNoExpand = iconNoExpand;
for (Node node : datas) {
node.getChildren().clear();
node.setIconExpand(iconExpand);
node.setIconNoExpand(iconNoExpand);
}
/**
* 对所有的Node进行排序
*/
mAllNodes = TreeHelper.getSortedNodes(datas, defaultExpandLevel);
/**
* 过滤出可见的Node
*/
mNodes = TreeHelper.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
*/
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
expandOrCollapse(position);
if (onTreeNodeClickListener != null) {
onTreeNodeClickListener.onClick(mNodes.get(position), position);
}
}
});
}
/**
* @param listView
* @param context
* @param datas
* @param defaultExpandLevel 默认展开几级树
*/
public TreeListViewAdapter(ListView listView, Context context, List<Node> datas, int defaultExpandLevel) {
this(listView, context, datas, defaultExpandLevel, -1, -1);
}
/**
* 相应ListView的点击事件 展开或关闭某节点
*
* @param position
*/
public void expandOrCollapse(int position) {
Node n = mNodes.get(position);
if (n != null) {
if (!n.isLeaf()) {
n.setExpand(!n.isExpand());
mNodes = TreeHelper.filterVisibleNode(mAllNodes);
notifyDataSetChanged();
}
}
}
@Override
public int getCount() {
return mNodes.size();
}
@Override
public Object getItem(int position) {
return mNodes.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
Node node = mNodes.get(position);
convertView = getConvertView(node, position, convertView, parent);
convertView.setPadding(node.getLevel() * 50, 12, 12, 12);
return convertView;
}
/**
* 获取排序后所有节点
*
* @return
*/
public List<Node> getAllNodes() {
if (mAllNodes == null)
mAllNodes = new ArrayList<Node>();
return mAllNodes;
}
/**
* 获取所有选中节点
*
* @return
*/
public List<Node> getSelectedNode() {
List<Node> checks = new ArrayList<Node>();
for (int i = 0; i < mAllNodes.size(); i++) {
Node n = mAllNodes.get(i);
if (n.isChecked()) {
checks.add(n);
}
}
return checks;
}
/**
* 设置多选
*
* @param node
* @param checked
*/
protected void setChecked(final Node node, boolean checked) {
node.setChecked(checked);
setChildChecked(node, checked);
if (node.getParent() != null)
setNodeParentChecked(node.getParent(), checked);
notifyDataSetChanged();
}
/**
* 设置是否选中
*
* @param node
* @param checked
*/
public <T> void setChildChecked(Node<T> node, boolean checked) {
if (!node.isLeaf()) {
node.setChecked(checked);
for (Node childrenNode : node.getChildren()) {
setChildChecked(childrenNode, checked);
}
} else {
node.setChecked(checked);
}
}
private void setNodeParentChecked(Node node, boolean checked) {
if (checked) {
node.setChecked(checked);
if (node.getParent() != null)
setNodeParentChecked(node.getParent(), checked);
} else {
List<Node> childrens = node.getChildren();
boolean isChecked = false;
for (Node children : childrens) {
if (children.isChecked()) {
isChecked = true;
}
}
if (!isChecked) {
node.setChecked(checked);
}
if (node.getParent() != null)
setNodeParentChecked(node.getParent(), checked);
}
}
/**
* 清除掉之前数据并刷新 重新添加
*
* @param mlists
* @param defaultExpandLevel 默认展开几级列表
*/
public void addDataAll(List<Node> mlists, int defaultExpandLevel) {
mAllNodes.clear();
addData(-1, mlists, defaultExpandLevel);
}
/**
* 在指定位置添加数据并刷新 可指定刷新后显示层级
*
* @param index
* @param mlists
* @param defaultExpandLevel 默认展开几级列表
*/
public void addData(int index, List<Node> mlists, int defaultExpandLevel) {
this.defaultExpandLevel = defaultExpandLevel;
notifyData(index, mlists);
}
/**
* 在指定位置添加数据并刷新
*
* @param index
* @param mlists
*/
public void addData(int index, List<Node> mlists) {
notifyData(index, mlists);
}
/**
* 添加数据并刷新
*
* @param mlists
*/
public void addData(List<Node> mlists) {
addData(mlists, defaultExpandLevel);
}
/**
* 添加数据并刷新 可指定刷新后显示层级
*
* @param mlists
* @param defaultExpandLevel
*/
public void addData(List<Node> mlists, int defaultExpandLevel) {
this.defaultExpandLevel = defaultExpandLevel;
notifyData(-1, mlists);
}
/**
* 添加数据并刷新
*
* @param node
*/
public void addData(Node node) {
addData(node, defaultExpandLevel);
}
/**
* 添加数据并刷新 可指定刷新后显示层级
*
* @param node
* @param defaultExpandLevel
*/
public void addData(Node node, int defaultExpandLevel) {
List<Node> nodes = new ArrayList<>();
nodes.add(node);
this.defaultExpandLevel = defaultExpandLevel;
notifyData(-1, nodes);
}
/**
* 刷新数据
*
* @param index
* @param mListNodes
*/
public void notifyData(int index, List<Node> mListNodes) {
for (int i = 0; i < mListNodes.size(); i++) {
Node node = mListNodes.get(i);
node.getChildren().clear();
node.iconExpand = iconExpand;
node.iconNoExpand = iconNoExpand;
}
for (int i = 0; i < mAllNodes.size(); i++) {
Node node = mAllNodes.get(i);
node.getChildren().clear();
}
if (index != -1) {
mAllNodes.addAll(index, mListNodes);
} else {
mAllNodes.addAll(mListNodes);
}
/**
* 对所有的Node进行排序
*/
mAllNodes = TreeHelper.getSortedNodes(mAllNodes, defaultExpandLevel);
/**
* 过滤出可见的Node
*/
mNodes = TreeHelper.filterVisibleNode(mAllNodes);
notifyDataSetChanged();
}
public abstract View getConvertView(Node node, int position, View convertView, ViewGroup parent);
}
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