public class MainActivity extends Activity {private ListView mListView;private TreeListViewAdapter<TestBean> mAdapter;private List<TestBean> mDatas = new ArrayList<TestBean>();@Overrideprotected void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);setContentView(R.layout.activity_main);this.mListView = (ListView) findViewById(R.id.listview);initTestDatas();try {mAdapter = new TreeListViewAdapter<TestBean>(mListView, this, mDatas, 0);}catch (Exception e) {e.printStackTrace();}this.mListView.setAdapter(mAdapter);mAdapter.setmTreeListener(new TreeViewOnItemClick() {@Overridepublic void onTreeItemClick(int position, Node node) {Toast.makeText(MainActivity.this, "你點擊的是：" + node.getName(), Toast.LENGTH_SHORT).show();}});this.mListView.setOnItemLongClickListener(new OnItemLongClickListener() {@Overridepublic boolean onItemLongClick(AdapterView<?> arg0, View arg1, final int arg2, long arg3) {final EditText edt = new EditText(MainActivity.this);new AlertDialog.Builder(MainActivity.this).setTitle("Insert").setView(edt).setPositiveButton("submit", new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {if (TextUtils.isEmpty(edt.getText().toString())) {Toast.makeText(MainActivity.this, "請?zhí)顚懱砑觾?nèi)容", Toast.LENGTH_SHORT).show();}else {mAdapter.insertNodeData(arg2, edt.getText().toString());}}}).setNegativeButton("Cancel", null).create().show();return true;}});}private void initTestDatas() {TestBean bean = null;bean = new TestBean(1, 0, "文件目錄1");mDatas.add(bean);bean = new TestBean(2, 0, "文件目錄2");mDatas.add(bean);bean = new TestBean(3, 0, "文件目錄3");mDatas.add(bean);bean = new TestBean(4, 1, "文件目錄4");mDatas.add(bean);bean = new TestBean(5, 1, "文件目錄5");mDatas.add(bean);bean = new TestBean(6, 2, "文件目錄6");mDatas.add(bean);bean = new TestBean(7, 2, "文件目錄7");mDatas.add(bean);bean = new TestBean(8, 3, "文件目錄8");mDatas.add(bean);bean = new TestBean(9, 3, "文件目錄9");mDatas.add(bean);bean = new TestBean(10, 0, "文件目錄10");mDatas.add(bean);}}

** * 樹形ListView的數(shù)據(jù)適配器類 * @description： * @author ldm * @date 2015-10-9 上午9:47:01 */public abstract class TreeViewBaseAdapter<T> extends BaseAdapter {protected Context context;protected List<T> datas;protected List<Node> mAllNodes;protected List<Node> mVisibleNodes;protected LayoutInflater mInflater;protected ListView treeLv;protected TreeViewOnItemClick mTreeListener;public TreeViewBaseAdapter(ListView treeLv, Context context, List<T> datas, int defaultExpandLevel) throws IllegalAccessException, IllegalArgumentException {this.context = context;this.treeLv = treeLv;mInflater = LayoutInflater.from(context);mAllNodes = TreeHelperTools.getSortedNodes(datas, defaultExpandLevel);mVisibleNodes = TreeHelperTools.filterVisibleNodes(mAllNodes);this.treeLv.setOnItemClickListener(new OnItemClickListener() {@Overridepublic void onItemClick(AdapterView<?> arg0, View arg1, int position, long arg3) {expandOrCollapse(position);if(mTreeListener!=null){mTreeListener.onTreeItemClick(position, mVisibleNodes.get(position));}}});}public void setmTreeListener(TreeViewOnItemClick mTreeListener) {this.mTreeListener = mTreeListener;}/*** 設置ListView點擊item節(jié)點時，是否應該展開* @description：* @author ldm* @date 2015-10-10 上午9:05:08*/protected void expandOrCollapse(int position) {Node n=mVisibleNodes.get(position);if(n!=null){if(n.isLeaf()){return;}n.setExpand(!n.isExpand());mVisibleNodes=TreeHelperTools.filterVisibleNodes(mAllNodes);notifyDataSetChanged();}}@Overridepublic int getCount() {// TODO Auto-generated method stubreturn mVisibleNodes.size();}@Overridepublic Object getItem(int position) {// TODO Auto-generated method stubreturn mVisibleNodes.get(position);}@Overridepublic long getItemId(int position) {// TODO Auto-generated method stubreturn position;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {Node node=mVisibleNodes.get(position);convertView = getContentView(node,position, convertView, parent);return convertView;}public abstract View getContentView(Node node,int position, View convertView, ViewGroup parent);public interface TreeViewOnItemClick{void onTreeItemClick(int position,Node node);}}

 public class TreeListViewAdapter<T> extends TreeViewBaseAdapter<T> {public TreeListViewAdapter(ListView treeLv, Context context, List<T> datas, int defaultExpandLevel) throws IllegalAccessException, IllegalArgumentException {super(treeLv, context, datas, defaultExpandLevel);}@Overridepublic View getContentView(Node node, int position, View convertView, ViewGroup parent) {ViewHolder holder = null;if (convertView == null) {holder = new ViewHolder();convertView = mInflater.inflate(R.layout.tree_listview_item, parent, false);holder.mItemIv = (ImageView) convertView.findViewById(R.id.mItemIv);holder.mItemTv = (TextView) convertView.findViewById(R.id.mItemTv);convertView.setTag(holder);}else {holder = (ViewHolder) convertView.getTag();}holder.mItemIv.setPadding(node.getLevel()*30, 3, 3, 3);if (node.getIcon() == -1) {holder.mItemIv.setVisibility(View.INVISIBLE);}else {holder.mItemIv.setVisibility(View.VISIBLE);holder.mItemIv.setImageResource(node.getIcon());}holder.mItemTv.setText(node.getName());return convertView;}private static class ViewHolder {ImageView mItemIv;TextView mItemTv;}/*** 動態(tài)插入數(shù)據(jù)* @description：* @author ldm* @date 2015-10-10 上午10:08:03*/public void insertNodeData(int position,String label) {Node node=mVisibleNodes.get(position);int indexOf=mAllNodes.indexOf(node);Node insertNode=new Node(-1, node.getId(), label);insertNode.setParent(node);node.getChildren().add(insertNode);mAllNodes.add(indexOf+1,insertNode);mVisibleNodes=TreeHelperTools.filterVisibleNodes(mVisibleNodes);notifyDataSetChanged();}}

public class TreeDatasHelperTools {/*** 將用戶提供的數(shù)據(jù)轉(zhuǎn)化成樹層級上可用數(shù)據(jù)* @description：* @date 2015-10-9 下午4:07:24*/public static <T> List<Node> datas2Nodes(List<T> datas) throws IllegalAccessException, IllegalArgumentException {List<Node> nodes = new ArrayList<Node>();Node node = null;for (T t : datas) {int id = -1;int pid = -1;String label = "";// node = new Node();Class clazz = t.getClass();Field[] fields = clazz.getDeclaredFields();// 反射獲取類中的字段for (Field field : fields) {if (field.getAnnotation(TreeNodeId.class) != null) {// 根據(jù)字段上的注解來獲取對應的值field.setAccessible(true);// 在java的反射使用中,如果字段是私有的,那么必須要對這個字段設置才能正常使用，否則報錯id = field.getInt(t);}if (field.getAnnotation(TreeNodePid.class) != null) {field.setAccessible(true);pid = field.getInt(t);}if (field.getAnnotation(TreeNodeLabel.class) != null) {field.setAccessible(true);label = (String) field.get(t);}}node = new Node(id, pid, label);nodes.add(node);}// 設置nodes中的父子節(jié)點關系for (int i = 0; i < nodes.size(); i++) {Node n = nodes.get(i);for (int j = i + 1; j < nodes.size(); j++) {Node m = nodes.get(j);if (m.getPid() == n.getId()) {// 如果m的父節(jié)點pid==n的id，則m是父節(jié)點，n是子節(jié)點n.getChildren().add(m);m.setParent(n);}else if (m.getId() == n.getPid()) {m.getChildren().add(n);n.setParent(m);}}}// 設置節(jié)點圖片for (Node n : nodes) {setNodeIcon(n);}return nodes;}/*** 為我們的node數(shù)據(jù)設置對應的圖標* @description：* @date 2015-10-9 下午4:46:29*/private static void setNodeIcon(Node n) {if (n.getChildren().size() > 0 && n.isExpand()) {// 如果有子節(jié)點且展開狀態(tài)n.setIcon(R.drawable.icon_unable);}else if (n.getChildren().size() > 0 && !n.isExpand()) {n.setIcon(R.drawable.icon_enable);}else {n.setIcon(-1);}}public static <T> List<Node> getSortedNodes(List<T> datas, int defaultExpandLevel) throws IllegalAccessException, IllegalArgumentException {List<Node> result = new ArrayList<Node>();List<Node> nodes = datas2Nodes(datas);// 首先獲取根節(jié)點數(shù)據(jù)List<Node> rootNodes = getRootNodes(nodes);for (Node node : rootNodes) {addNode(result, node, defaultExpandLevel, 1);}return result;}

/*** 獲取數(shù)據(jù)中的所有根節(jié)點數(shù)據(jù)* @description：* @date 2015-10-9 下午5:00:32*/private static List<Node> getRootNodes(List<Node> nodes) {List<Node> root = new ArrayList<Node>();for (Node node : nodes) {if (node.isRoot()) {root.add(node);}}return root;}/*** 獲取到可見的節(jié)點數(shù)據(jù)* @description：* @date 2015-10-9 下午5:12:58*/public static List<Node> filterVisibleNodes(List<Node> mAllNodes) {List<Node> nodes = new ArrayList<Node>();for (Node node : mAllNodes) {if (node.isRoot() || node.isParentExpand()) {setNodeIcon(node);nodes.add(node);}}return nodes;}/*** 把一個節(jié)點的所有子節(jié)點都放入result中* @description：* @date 2015-10-9 下午5:05:57*/private static void addNode(List<Node> result, Node node, int defaultExpandLevel, int currentLevel) {result.add(node);if (defaultExpandLevel >= currentLevel) {node.setExpand(true);}if (node.isLeaf()) { return; }for (int i = 0; i < node.getChildren().size(); i++) {addNode(result, node.getChildren().get(i), defaultExpandLevel, currentLevel + 1);}}}

public class TestBean {@TreeNodeIdprivate int id;//添加對應的注解@TreeNodePidprivate int pid;@TreeNodeLabelprivate String label;private String desc;public TestBean(int id, int pid, String label) {super();this.id = id;this.pid = pid;this.label = label;}public TestBean() {// TODO Auto-generated constructor stub}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 getLabel() {return label;}public void setLabel(String label) {this.label = label;}public String getDesc() {return desc;}public void setDesc(String desc) {this.desc = desc;}}

public class Node {private int id;// 所在節(jié)點idprivate int pid = 0;// 父節(jié)點的idprivate String name;// 對應的內(nèi)容private int level;// 所在ListView中樹層級private boolean isExpand = false;// 所在節(jié)點是否展開private int icon;// 圖標iconprivate Node parent;// 父節(jié)點Nodeprivate List<Node> children = new ArrayList<Node>();// 對應的子節(jié)點數(shù)據(jù)集public Node() {}public Node(int id, int pid, String name) {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;}

/*** 當前節(jié)點所在的層級* @description：* @date 2015-10-9 下午4:02:29*/public int getLevel() {return parent == null ? 0 : parent.getLevel() + 1;}public void setLevel(int level) {this.level = level;}public boolean isExpand() {return isExpand;}public void setExpand(boolean isExpand) {this.isExpand = isExpand;if (!isExpand && children.size() > 0) {// 如果當前節(jié)點沒有展開，則其子節(jié)點展開狀態(tài)也是：沒展開for (Node node : children) {node.setExpand(false);}}}public int getIcon() {return icon;}public void setIcon(int icon) {this.icon = icon;}public Node getParent() {return parent;}public void setParent(Node parent) {this.parent = parent;}public List<Node> getChildren() {return children;}public void setChildren(List<Node> children) {this.children = children;}/*** 判斷當前節(jié)點有沒有子節(jié)點* @description：* @author ldm* @date 2015-10-9 下午3:59:42*/public boolean isLeaf() {return children.size() == 0;}/*** 是不是根節(jié)點* @description：* @author ldm* @date 2015-10-9 下午3:58:15*/public boolean isRoot() {return parent == null;}/*** 當前節(jié)點所在父節(jié)點是否展開* @description：* @author ldm* @date 2015-10-9 下午3:58:34*/public boolean isParentExpand() {if (parent == null) {return false;}else {return parent.isExpand;}}}

@Target(ElementType.FIELD)//定義注解的作用目標：字段、枚舉的常量@Retention(RetentionPolicy.RUNTIME)//注解策略： 注解會在class字節(jié)碼文件中存在，在運行時可以通過反射獲取到public @interface TreeNodeId {}

@Target(ElementType.FIELD)//定義注解的作用目標：字段、枚舉的常量@Retention(RetentionPolicy.RUNTIME)//注解策略： 注解會在class字節(jié)碼文件中存在，在運行時可以通過反射獲取到public @interface TreeNodeLabel {}``

@Target(ElementType.FIELD)//定義注解的作用目標：字段、枚舉的常量 @Retention(RetentionPolicy.RUNTIME)//注解策略： 注解會在class字節(jié)碼文件中存在，在運行時可以通過反射獲取到 public @interface TreeNodePid { }