listview实现的tree树结构

转自：http://www.eoeandroid.com/thread-309141-1-1.html 会更新版本

代码分享
代码名称: myTreeViewDemo
代码描述: 使用listView实现的树状结构
代码托管地址: -
代码作者: 阿富

效果图：

写在前面：
首先说明一下，这个只是最基本的树状组织结构的展现，我自己ps的连接线o(∩_∩)o ，至于实际使用中，可以对+、-号以及节点图标和文本加入点击事件；也可以在节点前加入checkbox等。
在做这个之前，网上也找了很久，找到的比较多的就是这个例子：http://www.apkbus.com/android-83520-1-1.html，但是这个不好看，所以基于这个才有了本例子。o(∩_∩)o 哈哈，第一次发自己写的东西，写的不好的地方请见谅（希望有人对性能优化，本人不是做安卓开发的，工作之余自学这个）；上代码：

TreeElement.java

1. package com.ccl.util.tree;
   
2. 
   
3. import java.util.ArrayList;
   
4. import java.util.List;
   
5. 
   
6. import android.view.View.OnClickListener;
   
7. 
   
8. public class TreeElement {
   
9. private int img_tree_space_n = R.drawable.tree_space_n;
   
10. private int img_tree_space_y = R.drawable.tree_space_y;
    
11. 
    
12. private String id;// 节点id
    
13. private String caption;// 节点标题
    
14. private String value;// 节点的值
    
15. private int level;// 层级
    
16. private TreeElement parent;// 该节点的父节点
    
17. private boolean isHasChild;// 是否有子节点
    
18. private boolean isExpanded;// 是否处于展开
    
19. private ArrayList<TreeElement> childList;// 子节点数组
    
20. private boolean isLastSibling;// 是否是同级节点的最后一个
    
21. private ArrayList<Integer> spaceList;// 组织结构线条数组
    
22. private int position;// 在listview中所处的位置
    
23. private OnClickListener captionOnClickListener;// 节点文本点击事件
    
24. 
    
25. public TreeElement() {
    
26. super();
    
27. }
    
28. 
    
29. public TreeElement(String id, String caption, String value,
    
30. Boolean isHasChild, OnClickListener captionOnClickListener) {
    
31. this.id = id;
    
32. this.caption = caption;
    
33. this.value = value;
    
34. this.parent = null;
    
35. this.level = 0;
    
36. this.isHasChild = isHasChild;
    
37. this.isExpanded = false;
    
38. if (isHasChild) {
    
39. this.childList = new ArrayList<TreeElement>();
    
40. }
    
41. this.isLastSibling = false;
    
42. this.setSpaceList(new ArrayList<Integer>());
    
43. this.position = 0;
    
44. this.setCaptionOnClickListener(captionOnClickListener);
    
45. }
    
46. 
    
47. // 添加子节点
    
48. public void addChild(TreeElement treeElement) {
    
49. treeElement.parent = this;
    
50. if (treeElement.getParent() != null
    
51. && treeElement.getParent().getChildList().size() > 0) {// 将之前的同级节点的置为非最后一个节点
    
52. List<TreeElement> siblingList = treeElement.getParent()
    
53. .getChildList();
    
54. treeElement.getParent().getChildList().get(siblingList.size() - 1)
    
55. .setLastSibling(false);
    
56. }
    
57. this.childList.add(treeElement);
    
58. this.isHasChild = true;
    
59. treeElement.level = this.level + 1;
    
60. treeElement.isLastSibling = true;
    
61. if (this.level > 0) {
    
62. treeElement.getSpaceList().addAll(this.getSpaceList());
    
63. if (this.isLastSibling()) {
    
64. treeElement.getSpaceList().add(img_tree_space_n);
    
65. } else {
    
66. treeElement.getSpaceList().add(img_tree_space_y);
    
67. }
    
68. }
    
69. }
    
70. 
    
71. public String getId() {
    
72. return id;
    
73. }
    
74. 
    
75. public void setId(String id) {
    
76. this.id = id;
    
77. }
    
78. 
    
79. public String getCaption() {
    
80. return caption;
    
81. }
    
82. 
    
83. public void setCaption(String caption) {
    
84. this.caption = caption;
    
85. }
    
86. 
    
87. public String getValue() {
    
88. return value;
    
89. }
    
90. 
    
91. public void setValue(String value) {
    
92. this.value = value;
    
93. }
    
94. 
    
95. public TreeElement getParent() {
    
96. return parent;
    
97. }
    
98. 
    
99. public void setParent(TreeElement parent) {
    
100. this.parent = parent;
     
101. }
     
102. 
     
103. public boolean isHasChild() {
     
104. return isHasChild;
     
105. }
     
106. 
     
107. public void setHasChild(boolean isHasChild) {
     
108. this.isHasChild = isHasChild;
     
109. }
     
110. 
     
111. public boolean isExpanded() {
     
112. return isExpanded;
     
113. }
     
114. 
     
115. public void setExpanded(boolean isExpanded) {
     
116. this.isExpanded = isExpanded;
     
117. }
     
118. 
     
119. public ArrayList<TreeElement> getChildList() {
     
120. return childList;
     
121. }
     
122. 
     
123. public void setChildList(ArrayList<TreeElement> childList) {
     
124. this.childList = childList;
     
125. }
     
126. 
     
127. public int getLevel() {
     
128. return level;
     
129. }
     
130. 
     
131. public void setLevel(int level) {
     
132. this.level = level;
     
133. }
     
134. 
     
135. public boolean isLastSibling() {
     
136. return isLastSibling;
     
137. }
     
138. 
     
139. public void setLastSibling(boolean isLastSibling) {
     
140. this.isLastSibling = isLastSibling;
     
141. }
     
142. 
     
143. public ArrayList<Integer> getSpaceList() {
     
144. return spaceList;
     
145. }
     
146. 
     
147. public void setSpaceList(ArrayList<Integer> spaceList) {
     
148. this.spaceList = spaceList;
     
149. }
     
150. 
     
151. public int getPosition() {
     
152. return position;
     
153. }
     
154. 
     
155. public void setPosition(int position) {
     
156. this.position = position;
     
157. }
     
158. 
     
159. public OnClickListener getCaptionOnClickListener() {
     
160. return captionOnClickListener;
     
161. }
     
162. 
     
163. public void setCaptionOnClickListener(OnClickListener captionOnClickListener) {
     
164. this.captionOnClickListener = captionOnClickListener;
     
165. }
     
166. 
     
167. }

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TreeViewAdapter.java

1. package com.ccl.util.tree;
   
2. 
   
3. import java.util.ArrayList;
   
4. import android.content.Context;
   
5. import android.view.LayoutInflater;
   
6. import android.view.View;
   
7. import android.view.View.OnClickListener;
   
8. import android.view.ViewGroup;
   
9. import android.widget.ArrayAdapter;
   
10. import android.widget.ImageView;
    
11. import android.widget.LinearLayout;
    
12. import android.widget.TextView;
    
13. import android.widget.Toast;
    
14. 
    
15. public class TreeViewAdapter extends ArrayAdapter<TreeElement> {
    
16. private int img_leaf = R.drawable.icon_user;// 没有子节点的节点图标
    
17. private int img_expand = R.drawable.outline_list_expand;// 展开的图标
    
18. private int img_collapse = R.drawable.outline_list_collapse;// 收缩的图标
    
19. private int img_tree_space_1 = R.drawable.tree_space_1;// 连接线
    
20. private int img_tree_space_2 = R.drawable.tree_space_2;
    
21. 
    
22. private Context context;
    
23. private LayoutInflater mInflater;
    
24. private ArrayList<TreeElement> treeElementList;
    
25. private int viewResourceId;
    
26. 
    
27. public TreeViewAdapter(Context context, int viewResourceId,
    
28. ArrayList<TreeElement> objects) {
    
29. super(context, viewResourceId, objects);
    
30. this.context = context;
    
31. this.mInflater = LayoutInflater.from(context);
    
32. this.treeElementList = objects;
    
33. this.viewResourceId = viewResourceId;
    
34. }
    
35. 
    
36. @Override
    
37. public View getView(int position, View convertView, ViewGroup parent) {
    
38. ViewHolder holder;
    
39. convertView = mInflater.inflate(viewResourceId, null);
    
40. holder = new ViewHolder();
    
41. holder.caption = (TextView) convertView.findViewById(R.id.caption);
    
42. holder.icon = (ImageView) convertView.findViewById(R.id.icon);
    
43. holder.space = (LinearLayout) convertView.findViewById(R.id.space);
    
44. convertView.setTag(holder);
    
45. TreeElement treeElement = treeElementList.get(position);
    
46. 
    
47. int level = treeElement.getLevel();
    
48. if (level == 0) {// 根节点
    
49. 
    
50. } else {
    
51. ArrayList<Integer> spaceList = treeElement.getSpaceList();
    
52. 
    
53. // 绘制前面的组织架构线条
    
54. for (int i = 0; i < spaceList.size(); i++) {
    
55. ImageView img = new ImageView(context);
    
56. img.setImageResource(spaceList.get(i));
    
57. holder.space.addView(img);
    
58. }
    
59. ImageView img = new ImageView(context);
    
60. // 节点图标
    
61. if (treeElement.isLastSibling()) {
    
62. img.setImageResource(img_tree_space_2);
    
63. } else {
    
64. img.setImageResource(img_tree_space_1);
    
65. }
    
66. 
    
67. holder.space.addView(img);
    
68. }
    
69. if (treeElement.isHasChild()) {
    
70. if (treeElement.isExpanded()) {
    
71. holder.icon.setImageResource(img_expand);
    
72. } else {
    
73. holder.icon.setImageResource(img_collapse);
    
74. }
    
75. holder.icon.setOnClickListener(new TreeElementIconClickListener(
    
76. context, treeElementList, this, treeElement.getPosition()));
    
77. } else {
    
78. holder.icon.setImageResource(img_leaf);
    
79. }
    
80. holder.caption.setText(treeElement.getCaption());// 设置标题
    
81. if (treeElement.getCaptionOnClickListener() != null) {// 设置文字的点击事件
    
82. holder.caption.setTag(treeElement.getValue());
    
83. holder.caption.setOnClickListener(treeElement
    
84. .getCaptionOnClickListener());
    
85. 
    
86. }
    
87. return convertView;
    
88. }
    
89. 
    
90. class ViewHolder {
    
91. LinearLayout space;
    
92. TextView caption;
    
93. ImageView icon;
    
94. }
    
95. 
    
96. public static class TreeElementIconClickListener implements OnClickListener {
    
97. private Context context;
    
98. private ArrayList<TreeElement> treeElementList;
    
99. private TreeViewAdapter treeViewAdapter;
    
100. private int position;
     
101. 
     
102. public TreeElementIconClickListener(Context mContext,
     
103. ArrayList<TreeElement> mTreeElementList,
     
104. TreeViewAdapter mTreeViewAdapter, int position) {
     
105. this.context = mContext;
     
106. this.treeElementList = mTreeElementList;
     
107. this.treeViewAdapter = mTreeViewAdapter;
     
108. this.position = position;
     
109. }
     
110. 
     
111. @Override
     
112. public void onClick(View v) {
     
113. System.out.println("点击的position:" + position);
     
114. if (!treeElementList.get(position).isHasChild()) {
     
115. Toast.makeText(context,
     
116. treeElementList.get(position).getCaption(),
     
117. Toast.LENGTH_SHORT).show();
     
118. return;
     
119. }
     
120. 
     
121. if (treeElementList.get(position).isExpanded()) {
     
122. treeElementList.get(position).setExpanded(false);
     
123. TreeElement element = treeElementList.get(position);
     
124. ArrayList<TreeElement> temp = new ArrayList<TreeElement>();
     
125. 
     
126. for (int i = position + 1; i < treeElementList.size(); i++) {
     
127. if (element.getLevel() >= treeElementList.get(i).getLevel()) {
     
128. break;
     
129. }
     
130. temp.add(treeElementList.get(i));
     
131. }
     
132. 
     
133. treeElementList.removeAll(temp);
     
134. for (int i = position + 1; i < treeElementList.size(); i++) {
     
135. System.out.println(treeElementList.get(i).getCaption()
     
136. + "@@@" + i);
     
137. treeElementList.get(i).setPosition(i);
     
138. }
     
139. 
     
140. treeViewAdapter.notifyDataSetChanged();
     
141. } else {
     
142. TreeElement obj = treeElementList.get(position);
     
143. obj.setExpanded(true);
     
144. int level = obj.getLevel();
     
145. int nextLevel = level + 1;
     
146. 
     
147. ArrayList<TreeElement> tempList = obj.getChildList();
     
148. 
     
149. for (int i = 0; i < tempList.size(); i++) {
     
150. TreeElement element = tempList.get(i);
     
151. element.setLevel(nextLevel);
     
152. element.setExpanded(false);
     
153. treeElementList.add(position + i + 1, element);
     
154. }
     
155. for (int i = position + 1; i < treeElementList.size(); i++) {
     
156. System.out.println(treeElementList.get(i).getCaption()
     
157. + "@@@" + i);
     
158. treeElementList.get(i).setPosition(i);
     
159. }
     
160. treeViewAdapter.notifyDataSetChanged();
     
161. }
     
162. 
     
163. }
     
164. }
     
165. }

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MainActivity.java

1. package com.ccl.util.tree;
   
2. 
   
3. import java.util.ArrayList;
   
4. 
   
5. import com.ccl.util.tree.TreeViewAdapter.TreeElementIconClickListener;
   
6. 
   
7. import android.os.Bundle;
   
8. import android.app.Activity;
   
9. import android.view.View;
   
10. import android.view.View.OnClickListener;
    
11. import android.widget.ListView;
    
12. import android.widget.Toast;
    
13. 
    
14. public class MainActivity extends Activity {
    
15. private ListView lv_tree;
    
16. private TreeViewAdapter treeViewAdapter;
    
17. private ArrayList<TreeElement> mRootList;
    
18. 
    
19. @Override
    
20. protected void onCreate(Bundle savedInstanceState) {
    
21. super.onCreate(savedInstanceState);
    
22. setContentView(R.layout.activity_main);
    
23. lv_tree = (ListView) findViewById(R.id.lv_tree);
    
24. mRootList = new ArrayList<TreeElement>();
    
25. treeViewAdapter = new TreeViewAdapter(this, R.layout.atom_tree,
    
26. mRootList);
    
27. lv_tree.setAdapter(treeViewAdapter);
    
28. 
    
29. OnClickListener myOnClickListener = new OnClickListener() {
    
30. @Override
    
31. public void onClick(View v) {
    
32. Toast.makeText(MainActivity.this, "--" + v.getTag(),
    
33. Toast.LENGTH_LONG).show();
    
34. }
    
35. };
    
36. 
    
37. TreeElement rootElement = new TreeElement("root", "root", "1", true,
    
38. null);
    
39. 
    
40. TreeElement treeElement1 = new TreeElement("node1", "节点1", "1", true,
    
41. null);
    
42. TreeElement treeElement2 = new TreeElement("node2", "节点2", "2", false,
    
43. myOnClickListener);
    
44. TreeElement treeElement3 = new TreeElement("node3", "节点3", "1", false,
    
45. myOnClickListener);
    
46. TreeElement treeElement4 = new TreeElement("node3", "节点4", "1", true,
    
47. myOnClickListener);
    
48. 
    
49. TreeElement treeElement1_1 = new TreeElement("node14", "节点1_1", "1",
    
50. true, myOnClickListener);
    
51. TreeElement treeElement1_2 = new TreeElement("node14", "节点1_2", "1",
    
52. false, myOnClickListener);
    
53. TreeElement treeElement1_3 = new TreeElement("node14", "节点1_3", "1",
    
54. true, myOnClickListener);
    
55. TreeElement treeElement1_1_1 = new TreeElement("node14", "节点1_1_1",
    
56. "1", false, myOnClickListener);
    
57. TreeElement treeElement1_3_1 = new TreeElement("node14", "节点1_3_1",
    
58. "1", true, myOnClickListener);
    
59. TreeElement treeElement1_3_2 = new TreeElement("node14", "节点1_3_2",
    
60. "1", false, myOnClickListener);
    
61. TreeElement treeElement1_3_1_1 = new TreeElement("node14", "节点1_3_1_1",
    
62. "1", false, myOnClickListener);
    
63. 
    
64. TreeElement treeElement4_1 = new TreeElement("node14", "节点4_1", "1",
    
65. true, myOnClickListener);
    
66. TreeElement treeElement4_2 = new TreeElement("node14", "节点4_2", "1",
    
67. false, myOnClickListener);
    
68. TreeElement treeElement4_3 = new TreeElement("node14", "节点4_3", "1",
    
69. true, myOnClickListener);
    
70. TreeElement treeElement4_1_1 = new TreeElement("node14", "节点4_1_1",
    
71. "1", false, myOnClickListener);
    
72. TreeElement treeElement4_3_1 = new TreeElement("node14", "节点4_3_1",
    
73. "1", false, myOnClickListener);
    
74. mRootList.add(rootElement);
    
75. rootElement.addChild(treeElement1);
    
76. rootElement.addChild(treeElement2);
    
77. rootElement.addChild(treeElement3);
    
78. rootElement.addChild(treeElement4);
    
79. treeElement1.addChild(treeElement1_1);
    
80. treeElement1.addChild(treeElement1_2);
    
81. treeElement1.addChild(treeElement1_3);
    
82. treeElement1_1.addChild(treeElement1_1_1);
    
83. treeElement1_3.addChild(treeElement1_3_1);
    
84. treeElement1_3.addChild(treeElement1_3_2);
    
85. treeElement1_3_1.addChild(treeElement1_3_1_1);
    
86. treeElement4.addChild(treeElement4_1);
    
87. treeElement4.addChild(treeElement4_2);
    
88. treeElement4.addChild(treeElement4_3);
    
89. treeElement4_1.addChild(treeElement4_1_1);
    
90. treeElement4_3.addChild(treeElement4_3_1);
    
91. 
    
92. treeViewAdapter.notifyDataSetChanged();
    
93. System.out.println(1111);
    
94. 
    
95. // 展开根目录
    
96. TreeElementIconClickListener mtest = new TreeElementIconClickListener(
    
97. MainActivity.this, mRootList, treeViewAdapter, 0);
    
98. mtest.onClick(null);
    
99. 
    
100. }
     
101. }

复制代码

最新代码（不定期修改）：tree201310231140.zip(788.67 KB, 下载次数: 176)