ListVIew 中加載多個item 佈局的covertView複用問題

1. public class listViewTest extends Activity {
   
2. /** Called when the activity is first created. */
   
3. ListView listView;
   
4. MyAdapter listAdapter;
   
5. ArrayList<String> listString;
   
6. 
   
7. @Override
   
8. public void onCreate(Bundle savedInstanceState) {
   
9. super.onCreate(savedInstanceState);
   
10. setContentView(R.layout.main);
    
11. listView = (ListView)this.findViewById(R.id.listview);
    
12. listString = new ArrayList<String>();
    
13. for(int i = 0 ; i < 100 ; i++)
    
14. {
    
15. listString.add(Integer.toString(i));
    
16. }
    
17. listAdapter = new MyAdapter(this);
    
18. listView.setAdapter(listAdapter);
    
19. }
    
20. 
    
21. class MyAdapter extends BaseAdapter{
    
22. 
    
23. Context mContext;
    
24. LinearLayout linearLayout = null;
    
25. LayoutInflater inflater;
    
26. TextView tex;
    
27. final int VIEW_TYPE = 3;
    
28. final int TYPE_1 = 0;
    
29. final int TYPE_2 = 1;
    
30. final int TYPE_3 = 2;
    
31. 
    
32. public MyAdapter(Context context) {
    
33. // TODO Auto-generated constructor stub
    
34. mContext = context;
    
35. inflater = LayoutInflater.from(mContext);
    
36. }
    
37. 
    
38. @Override
    
39. public int getCount() {
    
40. // TODO Auto-generated method stub
    
41. return listString.size();
    
42. }
    
43. 
    
44. //每個convert view都會調用此方法，獲得當前所需要的view樣式
    
45. @Override
    
46. public int getItemViewType(int position) {
    
47. // TODO Auto-generated method stub
    
48. int p = position%6;
    
49. if(p == 0)
    
50. return TYPE_1;
    
51. else if(p < 3)
    
52. return TYPE_2;
    
53. else if(p < 6)
    
54. return TYPE_3;
    
55. else
    
56. return TYPE_1;
    
57. 
    
58. }
    
59. 
    
60. @Override
    
61. public int getViewTypeCount() {
    
62. // TODO Auto-generated method stub
    
63. return 3;
    
64. }
    
65. 
    
66. @Override
    
67. public Object getItem(int arg0) {
    
68. // TODO Auto-generated method stub
    
69. return listString.get(arg0);
    
70. }
    
71. 
    
72. @Override
    
73. public long getItemId(int position) {
    
74. // TODO Auto-generated method stub
    
75. return position;
    
76. }
    
77. 
    
78. @Override
    
79. public View getView(int position, View convertView, ViewGroup parent) {
    
80. // TODO Auto-generated method stub
    
81. viewHolder1 holder1 = null;
    
82. viewHolder2 holder2 = null;
    
83. viewHolder3 holder3 = null;
    
84. int type = getItemViewType(position);
    
85. 
    
86. 
    
87. //無convertView，需要new出各個控件
    
88. if(convertView == null)
    
89. { 
    
90. Log.e("convertView = ", " NULL");
    
91. 
    
92. //按當前所需的樣式，確定new的佈局
    
93. switch(type)
    
94. {
    
95. case TYPE_1:
    
96. convertView = inflater.inflate(R.layout.listitem1, parent, false);
    
97. holder1 = new viewHolder1();
    
98. holder1.textView = (TextView)convertView.findViewById(R.id.textview1);
    
99. holder1.checkBox = (CheckBox)convertView.findViewById(R.id.checkbox);
    
100. Log.e("convertView = ", "NULL TYPE_1");
     
101. convertView.setTag(holder1);
     
102. break;
     
103. case TYPE_2:
     
104. convertView = inflater.inflate(R.layout.listitem2, parent, false);
     
105. holder2 = new viewHolder2();
     
106. holder2.textView = (TextView)convertView.findViewById(R.id.textview2);
     
107. Log.e("convertView = ", "NULL TYPE_2");
     
108. convertView.setTag(holder2);
     
109. break;
     
110. case TYPE_3:
     
111. convertView = inflater.inflate(R.layout.listitem3, parent, false);
     
112. holder3 = new viewHolder3();
     
113. holder3.textView = (TextView)convertView.findViewById(R.id.textview3);
     
114. holder3.imageView = (ImageView)convertView.findViewById(R.id.imageview);
     
115. Log.e("convertView = ", "NULL TYPE_3");
     
116. convertView.setTag(holder3);
     
117. break;
     
118. }
     
119. }
     
120. else
     
121. {
     
122. //有convertView，按樣式，取得不用的佈局
     
123. switch(type)
     
124. {
     
125. case TYPE_1:
     
126. holder1 = (viewHolder1) convertView.getTag();
     
127. Log.e("convertView !!!!!!= ", "NULL TYPE_1");
     
128. break;
     
129. case TYPE_2:
     
130. holder2 = (viewHolder2) convertView.getTag();
     
131. Log.e("convertView !!!!!!= ", "NULL TYPE_2");
     
132. break;
     
133. case TYPE_3:
     
134. holder3 = (viewHolder3) convertView.getTag();
     
135. Log.e("convertView !!!!!!= ", "NULL TYPE_3");
     
136. break;
     
137. }
     
138. }
     
139. 
     
140. //設置資源
     
141. switch(type)
     
142. {
     
143. case TYPE_1:
     
144. holder1.textView.setText(Integer.toString(position));
     
145. holder1.checkBox.setChecked(true);
     
146. break;
     
147. case TYPE_2:
     
148. holder2.textView.setText(Integer.toString(position));
     
149. break;
     
150. case TYPE_3:
     
151. holder3.textView.setText(Integer.toString(position));
     
152. holder3.imageView.setBackgroundResource(R.drawable.icon);
     
153. break;
     
154. }
     
155. 
     
156. 
     
157. return convertView;
     
158. }
     
159. 
     
160. }
     
161. 
     
162. 
     
163. //各個佈局的控件資源
     
164. 
     
165. class viewHolder1{
     
166. CheckBox checkBox;
     
167. TextView textView;
     
168. }
     
169. class viewHolder2{
     
170. TextView textView;
     
171. }
     
172. class viewHolder3{
     
173. ImageView imageView;
     
174. TextView textView;
     
175. }
     
176. }