private MyTreeListViewAdapter adapter;
private List mDatas = new ArrayList();
//标记是显示Checkbox还是隐藏
private boolean isHide = true;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initDatas();
treeLv = (ListView) this.findViewById(R.id.tree_lv);
checkSwitchBtn = (Button)this.findViewById(R.id.check_switch_btn);
checkSwitchBtn.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
if(isHide){
isHide = false;
}else{
isHide = true;
}
adapter.updateView(isHide);
}
});
try {
adapter = new MyTreeListViewAdapter(treeLv, this,
mDatas, 10, isHide);
adapter.setOnTreeNodeClickListener(new OnTreeNodeClickListener() {
@Override
public void onClick(Node node, int position) {
if (node.isLeaf()) {
Toast.makeText(getApplicationContext(), node.getName(),
Toast.LENGTH_SHORT).show();
}
}
@Override
public void onCheckChange(Node node, int position,
List checkedNodes) {
StringBuffer sb = new StringBuffer();
for (Node n : checkedNodes) {
int pos = n.getId() - 1;
sb.append(mDatas.get(pos).getName()).append("—")
.append(pos + 1).append(";");
}
Toast.makeText(getApplicationContext(), sb.toString(),
Toast.LENGTH_SHORT).show();
}
});
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
}
treeLv.setAdapter(adapter);
}
private void initDatas() {
mDatas.add(new MyNodeBean(1, 0, “中国古代”));
mDatas.add(new MyNodeBean(2, 1, “唐朝”));
mDatas.add(new MyNodeBean(3, 1, “宋朝”));
mDatas.add(new MyNodeBean(4, 1, “明朝”));
mDatas.add(new MyNodeBean(5, 2, “李世民”));
mDatas.add(new MyNodeBean(6, 2, “李白”));
mDatas.add(new MyNodeBean(7, 3, “赵匡胤”));
mDatas.add(new MyNodeBean(8, 3, “苏轼”));
mDatas.add(new MyNodeBean(9, 4, “朱元璋”));
mDatas.add(new MyNodeBean(10, 4, “唐伯虎”));
mDatas.add(new MyNodeBean(11, 4, “文征明”));
mDatas.add(new MyNodeBean(12, 7, “赵建立”));
mDatas.add(new MyNodeBean(13, 8, “苏东东”));
mDatas.add(new MyNodeBean(14, 10, “秋香”));
}
}
Adapter
这个adapter是继承了自己的定义的一个TreeListViewAdapter，核心实现都是在TreeListViewAdapter这个里面
package com.example.customtreeviewdemo;
import java.util.List;
import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import com.example.customtreeviewdemo.tree.Node;
import com.example.customtreeviewdemo.tree.TreeListViewAdapter;
public class MyTreeListViewAdapter extends TreeListViewAdapter {
public MyTreeListViewAdapter(ListView mTree, Context context,
List datas, int defaultExpandLevel,boolean isHide)
throws IllegalArgumentException, IllegalAccessException {
super(mTree, context, datas, defaultExpandLevel,isHide);
}
@SuppressWarnings(“unchecked”)
@Override
public View getConvertView(Node node, int position, View convertView,
ViewGroup parent) {
ViewHolder viewHolder = null;
if (convertView == null)
{
convertView = mInflater.inflate(R.layout.list_item, parent, false);
viewHolder = new ViewHolder();
viewHolder.icon = (ImageView) convertView
.findViewById(R.id.id_treenode_icon);
viewHolder.label = (TextView) convertView
.findViewById(R.id.id_treenode_name);
viewHolder.checkBox = (CheckBox)convertView.findViewById(R.id.id_treeNode_check);
convertView.setTag(viewHolder);
} else
{
viewHolder = (ViewHolder) convertView.getTag();
}
if (node.getIcon() == -1)
{
viewHolder.icon.setVisibility(View.INVISIBLE);
} else
{
viewHolder.icon.setVisibility(View.VISIBLE);
viewHolder.icon.setImageResource(node.getIcon());
}
if(node.isHideChecked()){
viewHolder.checkBox.setVisibility(View.GONE);
}else{
viewHolder.checkBox.setVisibility(View.VISIBLE);
setCheckBoxBg(viewHolder.checkBox,node.isChecked());
}
viewHolder.label.setText(node.getName());
return convertView;
}
private final class ViewHolder
{
ImageView icon;
TextView label;
CheckBox checkBox;
}
/**
-
checkbox是否显示
-
@param cb
-
@param isChecked
*/
private void setCheckBoxBg(CheckBox cb,boolean isChecked){
if(isChecked){
cb.setBackgroundResource(R.drawable.check_box_bg_check);
}else{
cb.setBackgroundResource(R.drawable.check_box_bg);
}
}
}
自定义TreeListViewAdapter 这个是整个树形结构的一个适配器，这里面主要是实现对Node节点的操作 点击，选中改变 更新等
package com.example.customtreeviewdemo.tree;
import java.util.ArrayList;
import java.util.List;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.ListView;
import android.widget.RelativeLayout;
/**
-
tree适配器
-
@param
*/
public abstract class TreeListViewAdapter extends BaseAdapter {
protected Context mContext;
/**
- 存储所有可见的Node
*/
protected List mNodes;
protected LayoutInflater mInflater;
/**
- 存储所有的Node
*/
protected List mAllNodes;
/**
- 点击的回调接口
*/
private OnTreeNodeClickListener onTreeNodeClickListener;
public interface OnTreeNodeClickListener {
/**
-
处理node click事件
-
@param node
-
@param position
*/
void onClick(Node node, int position);
/**
-
处理checkbox选择改变事件
-
@param node
-
@param position
-
@param checkedNodes
*/
void onCheckChange(Node node, int position,List checkedNodes);
}
public void setOnTreeNodeClickListener(
OnTreeNodeClickListener onTreeNodeClickListener) {
this.onTreeNodeClickListener = onTreeNodeClickListener;
}
/**
-
@param mTree
-
@param context
-
@param datas
-
@param defaultExpandLevel
-
默认展开几级树 -
@throws IllegalArgumentException
-
@throws IllegalAccessException
*/
public TreeListViewAdapter(ListView mTree, Context context, List datas,
int defaultExpandLevel, boolean isHide)
throws IllegalArgumentException, IllegalAccessException {
mContext = context;
/**
- 对所有的Node进行排序
*/
mAllNodes = TreeHelper
.getSortedNodes(datas, defaultExpandLevel, isHide);
/**
- 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
*/
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);
}
}
});
}
/**
-
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)// 排除传入参数错误异常
{
if (!n.isLeaf()) {
n.setExpand(!n.isExpand());
mNodes = TreeHelper.filterVisibleNode(mAllNodes);
notifyDataSetChanged();// 刷新视图
}
}
}
@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(final int position, View convertView, ViewGroup parent) {
final Node node = mNodes.get(position);
convertView = getConvertView(node, position, convertView, parent);
// 设置内边距
convertView.setPadding(node.getLevel() * 30, 3, 3, 3);
if (!node.isHideChecked()) {
//获取各个节点所在的父布局
RelativeLayout myView = (RelativeLayout) convertView;
//父布局下的CheckBox
CheckBox cb = (CheckBox) myView.getChildAt(1);
cb.setOnCheckedChangeListener(new OnCheckedChangeListener(){
@Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
TreeHelper.setNodeChecked(node, isChecked);
List checkedNodes = new ArrayList();
for(Node n:mAllNodes){
if(n.isChecked()){
checkedNodes.add(n);
}
}
onTreeNodeClickListener.onCheckChange(node,position,checkedNodes);
TreeListViewAdapter.this.notifyDataSetChanged();
}
});
}
return convertView;
}
public abstract View getConvertView(Node node, int position,
View convertView, ViewGroup parent);
/**
-
更新
-
@param isHide
*/
public void updateView(boolean isHide){
for(Node node:mAllNodes){
node.setHideChecked(isHide);
}
this.notifyDataSetChanged();
}
}
node 模型类
package com.example.customtreeviewdemo.bean;
public class MyNodeBean {
/**
- 节点Id
*/
private int id;
/**
- 节点父id
*/
private int pId;
/**
- 节点name
*/
private String name;
/**
*/
private String desc;
/**
- 节点名字长度
*/
private long length;
public MyNodeBean(int id, int pId, String name) {
super();
this.id = id;
this.pId = pId;
this.name = name;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public int getPid() {
return pId;
}
public void setPid(int pId) {
this.pId = pId;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getDesc() {
return desc;
}
public void setDesc(String desc) {
this.desc = desc;
}
public long getLength() {
return length;
最后
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架构师项目实战——全球首批Android开发者对Android架构的见解
附相关架构及资料
;
this.id = id;
this.pId = pId;
this.name = name;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public int getPid() {
return pId;
}
public void setPid(int pId) {
this.pId = pId;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getDesc() {
return desc;
}
public void setDesc(String desc) {
this.desc = desc;
}
public long getLength() {
return length;
最后
在此为大家准备了四节优质的Android高级进阶视频：
架构师项目实战——全球首批Android开发者对Android架构的见解
附相关架构及资料
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