android-ListView分组显示.doc

Android ListView分组显示（整理）对于Listview的分组我们再熟悉不过了，因为Android自带的通讯录中的联系人信息就是使用的ListView分组，最近项目中用到了这个功能。所以趁着周末有时间，也更新下一篇这样的博客，希望对大家能够有帮助。 其实对于分组的ListView和我们平时用的ListView没有多大差别，就是需要在适配器中的getView方法中做下判断。只要理解了这个，下面就好说了，下面我们看下实现代码。 首先是main.xml布局：html 因为listview要加载两种不同的item，所以要实现两个item布局，addexam_list_item.xml：html 分组标签对应的布局addexam_list_item_tag.xmlhtml 布局文件我们已经实现了，下面看下在程序中我们是怎么处理的吧！html public class TestActivity extends Activity /* Called when the activity is first created. */ private List list=null; private List groupkey=new ArrayList(); private List aList = new ArrayList(); private List bList = new ArrayList(); private ListView listview; Override public void onCreate(Bundle savedInstanceState) super.onCreate(savedInstanceState); setContentView(R.layout.main); listview=(ListView) findViewById(R.id.listView_list); initData(); MyAdapter adapter=new MyAdapter(); listview.setAdapter(adapter); public void initData() list = new ArrayList(); groupkey.add(A组); groupkey.add(B组); for(int i=0; i5; i+) aList.add(A组+i); list.add(A组); list.addAll(aList); for(int i=0; i8; i+) bList.add(B组+i); list.add(B组); list.addAll(bList); private class MyAdapter extends BaseAdapter Override public int getCount() / TODO Auto-generated method stub return list.size(); Override public Object getItem(int position) / TODO Auto-generated method stub return list.get(position); Override public long getItemId(int position) / TODO Auto-generated method stub return position; Override public boolean isEnabled(int position) / TODO Auto-generated method stub if(groupkey.contains(getItem(position) return false; return super.isEnabled(position); Override public View getView(int position, View convertView, ViewGroup parent) / TODO Auto-generated method stub View view=convertView; if(groupkey.contains(getItem(position) view=LayoutInflater.from(getApplicationContext().inflate(R.layout.addexam_list_item_tag, null); else view=LayoutInflater.from(getApplicationContext().inflate(R.layout.addexam_list_item, null); TextView text=(TextView) view.findViewById(R.id.addexam_list_item_text); text.setText(CharSequence) getItem(position); return view; public class TestActivity extends Activity /* Called when the activity is first created. */private List list=null;private List groupkey=new ArrayList(); private List aList = new ArrayList(); private List bList = new ArrayList();private ListView listview; Override public void onCreate(Bundle savedInstanceState) super.onCreate(savedInstanceState); setContentView(R.layout.main); listview=(ListView) findViewById(R.id.listView_list); initData(); MyAdapter adapter=new MyAdapter(); listview.setAdapter(adapter); public void initData() list = new ArrayList(); groupkey.add(A组); groupkey.add(B组); for(int i=0; i5; i+) aList.add(A组+i); list.add(A组); list.addAll(aList); for(int i=0; i8; i+) bList.add(B组+i); list.add(B组); list.addAll(bList); private class MyAdapter extends BaseAdapterOverridepublic int getCount() / TODO Auto-generated method stubreturn list.size();Overridepublic Object getItem(int position) / TODO Auto-generated method stubreturn list.get(position);Overridepublic long getItemId(int position) / TODO Auto-generated method stubreturn position; Override public boolean isEnabled(int position) / TODO Auto-generated method stub if(groupkey.contains(getItem(position) return false; return super.isEnabled(position); Overridepublic View getView(int position, View convertView, ViewGroup parent) / TODO Auto-generated method stubView view=convertView;if(groupkey.contains(getItem(position)view=LayoutInflater.from(getApplicationContext().inflate(R.layout.addexam_list_item_tag, null);elseview=LayoutInflater.from(getApplicationContext().inflate(R.layout.addexam_list_item, null);TextView text=(TextView) view.findViewById(R.id.addexam_list_item_text);text.setText(CharSequence) getItem(position);return view; 代码好像挺简单，更我们平时使用lsitview也没多大区别，下面看看能不能实现呢运行一下：摘自 wangkuifeng0118的专栏、程序主界面 SeparateListView.javajavaview plaincopyprint? 1. packagewhu.iss.wuxianglong; 2. 3. importjava.util.ArrayList; 4. importjava.util.List; 5. 6. importandroid.app.Activity; 7. importandroid.content.Context; 8. importandroid.os.Bundle; 9. importandroid.view.LayoutInflater; 10. importandroid.view.View; 11. importandroid.view.ViewGroup; 12. importandroid.widget.ArrayAdapter; 13. importandroid.widget.ListView; 14. importandroid.widget.TextView; 15. 16. publicclassSeparateListViewextendsActivity 17. ListViewlistView; 18. MyAdaptermyAdapter; 19. publicListlistTag=newArrayList(); 20. 21. /*Calledwhentheactivityisfirstcreated.*/ 22. Override 23. publicvoidonCreate(BundlesavedInstanceState) 24. super.onCreate(savedInstanceState); 25. setContentView(R.layout.main); 26. 27. listView=(ListView)findViewById(R.id.list); 28. myAdapter=newMyAdapter(this, 29. android.R.layout.simple_expandable_list_item_1,getData(); 30. listView.setAdapter(myAdapter); 31. 32. privateListgetData() 33. Listdata=newArrayList(); 34. inti=0; 35. 36. data.add(A); 37. listTag.add(A); 38. data.add(aa试数据+(i+); 39. data.add(a试数据+(i+); 40. data.add(aa试数据+(i+); 41. listTag.add(B); 42. data.add(B); 43. data.add(bb试数据+(i+); 44. data.add(b试数据+(i+); 45. data.add(b试数据+(i+); 46. data.add(b试数据+(i+); 47. listTag.add(C); 48. data.add(C); 49. data.add(c测试数据+(i+); 50. data.add(c测试数据+(i+); 51. listTag.add(D); 52. data.add(D); 53. data.add(d测试数据+(i+); 54. data.add(d测试数据+(i+); 55. data.add(d测试数据+(i+); 56. listTag.add(E); 57. data.add(E); 58. data.add(e测试数据+(i+); 59. data.add(e测试数据+(i+); 60. data.add(e测试数据+(i+); 61. listTag.add(F); 62. data.add(F); 63. data.add(f测试数据+(i+); 64. returndata; 65. 66. 67. 68. classMyAdapterextendsArrayAdapter 69. 70. publicMyAdapter(Contextcontext,inttextViewResourceId, 71. Listobjects) 72. super(context,textViewResourceId,objects); 73. 74. 75. 76. Override 77. publicbooleanareAllItemsEnabled() 78. returnfalse; 79. 80. 81. Override 82. publicbooleanisEnabled(intposition) 83. /如果-开头，则该项不可选 84. return!listTag.contains(getItem(position); 85. 86. 87. Override 88. publicViewgetView(intposition,ViewconvertView,ViewGroupparent) 89. Viewview=convertView; 90. /根据标签类型加载不通的布局模板 91. if(listTag.contains(getItem(position) 92. /如果是标签项 93. view=LayoutInflater.from(getContext().inflate(R.layout.group_list_item_tag,null); 94. else 95. /否则就是数据项 96. view=LayoutInflater.from(getContext().inflate(R.layout.group_list_item,null); 97. 98. /显示名称 99. TextViewtextView=(TextView)view.findViewById(R.id.group_list_item_text); 100. textView.setText(getItem(position); 101. /返回重写的view 102. returnview; 103. 104. 105. 106. 2、程序主界面布局文件main.xmlhtmlview plaincopyprint? 1. 2. 7. 11. 12. 3、ListView中数据部分样式布局文件group_list_item.xmlhtmlview plaincopyprint? 1. 2. 7. 11. 12. 18. 19. 4、ListView中分组标志行的样式布局文件group_list_item_tag.xmlhtmlview plaincopyprint? 1. 2. 7. 13. 14. Listview显示数据查询后数据/TestListviewActivity.java 0203package com.androidtest; 0405import android.app.ListActivity; 06import android.content.Intent; 07import android.os.Bundle; 08import android.view.View; 09import android.widget.AdapterView; 10import android.widget.AdapterView.OnItemClickListener; 11import android.widget.ArrayAdapter; 12import android.widget.ListView; 1314public class TestListviewActivity extends ListActivity implements OnItemClickListener 15/* Called when the activity is first created. */16Override17public void onCreate(Bundle savedInstanceState) 18super.onCreate(savedInstanceState); 19ListView mListView = getListView(); 20mListView.setAdapter(new ArrayAdapter(this, android.R.layout.simple_list_item_1,new String Item0,Item1,Item2,Item3,Item4,Item5,Item6,Item7,Item8,Item9); 21mListView.setOnItemClickListener(this); 22 2324Override25public void onItemClick(AdapterView parent, View view, int position, long id) 26Intent intent = new Intent(this,TargetAc