listView 添加多个不同的adapter

有时候我们想在listView上分类，或者呢 有时候一行显示两列内容，有时候需要三列内容 ，那怎么实现呢，这里呢就要使用

Java代码

1. classSection{
2. Stringcaption;
3. Adapteradapter;
5. Section(Stringcaption,Adapteradapter){
6. this.caption=caption;
7. this.adapter=adapter;
8. }
9. }

自定义一个类，这个类呢包含多个adapter就可以了，想用那种就用那种。

Java代码

1. abstractpublicclassSectionedAdapterextendsBaseAdapter{
2. abstractprotectedViewgetHeaderView(Stringcaption,intindex,ViewconvertView,ViewGroupparent);
4. privateList<Section>sections=newArrayList<Section>();
5. privatestaticintTYPE_SECTION_HEADER=0;
7. publicSectionedAdapter(){
8. super();
9. }
11. publicvoidaddSection(Stringcaption,Adapteradapter){
12. sections.add(newSection(caption,adapter));
13. }
15. publicObjectgetItem(intposition){
16. for(Sectionsection:this.sections){
17. if(position==0){
18. return(section);
19. }
21. intsize=section.adapter.getCount()+1;
23. if(position<size){
24. return(section.adapter.getItem(position-1));
25. }
27. position-=size;
28. }
30. return(null);
31. }
33. publicintgetCount(){
34. inttotal=0;
36. for(Sectionsection:this.sections){
37. total+=section.adapter.getCount()+1;//addoneforheader
38. }
40. return(total);
41. }
43. publicintgetViewTypeCount(){
44. inttotal=1;//onefortheheader,plusthosefromsections
46. for(Sectionsection:this.sections){
47. total+=section.adapter.getViewTypeCount();
48. }
50. return(total);
51. }
53. publicintgetItemViewType(intposition){
54. inttypeOffset=TYPE_SECTION_HEADER+1;//startcountingfromhere
56. for(Sectionsection:this.sections){
57. if(position==0){
58. return(TYPE_SECTION_HEADER);
59. }
61. intsize=section.adapter.getCount()+1;
63. if(position<size){
64. return(typeOffset+section.adapter.getItemViewType(position-1));
65. }
67. position-=size;
68. typeOffset+=section.adapter.getViewTypeCount();
69. }
71. return(-1);
72. }
74. publicbooleanareAllItemsSelectable(){
75. return(false);
76. }
78. publicbooleanisEnabled(intposition){
79. return(getItemViewType(position)!=TYPE_SECTION_HEADER);
80. }
82. @Override
83. publicViewgetView(intposition,ViewconvertView,
84. ViewGroupparent){
85. intsectionIndex=0;
87. for(Sectionsection:this.sections){
88. if(position==0){
89. return(getHeaderView(section.caption,sectionIndex,convertView,parent));
90. }
92. intsize=section.adapter.getCount()+1;
94. if(position<size){
95. return(section.adapter.getView(position-1,convertView,parent));
96. }
98. position-=size;
99. sectionIndex++;
100. }
102. return(null);
103. }
105. @Override
106. publiclonggetItemId(intposition){
107. return(position);
108. }
110. classSection{
111. Stringcaption;
112. Adapteradapter;
114. Section(Stringcaption,Adapteradapter){
115. this.caption=caption;
116. this.adapter=adapter;
117. }
118. }
119. }

然后主类就是

Java代码

1. publicclassSectionedDemoextendsListActivity{
2. privatestaticString[]items={"lorem","ipsum","dolor","purus"};
4. @Override
5. publicvoidonCreate(Bundleicicle){
6. super.onCreate(icicle);
7. setContentView(R.layout.main);
9. adapter.addSection("Original",newArrayAdapter<String>(this,
10. android.R.layout.simple_list_item_1,
11. items));
13. List<String>list=Arrays.asList(items);
15. Collections.shuffle(list);
17. adapter.addSection("Shuffled",newArrayAdapter<String>(this,
18. android.R.layout.simple_list_item_1,
19. list));
21. list=Arrays.asList(items);
23. Collections.shuffle(list);
25. adapter.addSection("Re-shuffled",newArrayAdapter<String>(this,
26. android.R.layout.simple_list_item_1,
27. list));
29. setListAdapter(adapter);
30. }
32. SectionedAdapteradapter=newSectionedAdapter(){
33. protectedViewgetHeaderView(Stringcaption,intindex,ViewconvertView,ViewGroupparent){
34. TextViewresult=(TextView)convertView;
36. if(convertView==null){
37. result=(TextView)getLayoutInflater().inflate(R.layout.header,null);
38. }
40. result.setText(caption);
42. return(result);
43. }
44. };
45. }

其他的就需要你自己变化了，我这里只是吧内容打乱。

有些东西我只是简单调解没有源码或者我认为很简单的就不提供了。