Android ListView

在android開發中ListView是比較常用的組件，它以列表的形式展示具體內容，並且能夠根據數據的長度自適應顯示。

1. packagecom.ray.test;
3. importjava.util.ArrayList;
4. importjava.util.HashMap;
6. importandroid.app.Activity;
7. importandroid.os.Bundle;
8. importandroid.view.ContextMenu;
9. importandroid.view.MenuItem;
10. importandroid.view.View;
11. importandroid.view.ContextMenu.ContextMenuInfo;
12. importandroid.view.View.OnCreateContextMenuListener;
13. importandroid.widget.AdapterView;
14. importandroid.widget.ListView;
15. importandroid.widget.SimpleAdapter;
16. importandroid.widget.AdapterView.OnItemClickListener;
18. publicclassTestListViewextendsActivity{
19. @Override
20. publicvoidonCreate(BundlesavedInstanceState){
21. super.onCreate(savedInstanceState);
22. setContentView(R.layout.main);
23. //綁定Layout裡面的ListView
24. ListViewlist=(ListView)findViewById(R.id.ListView01);
26. //生成動態數組，加入數據
27. ArrayList<HashMap<String,Object>>listItem=newArrayList<HashMap<String,Object>>();
28. for(inti=0;i<10;i++)
29. {
30. HashMap<String,Object>map=newHashMap<String,Object>();
31. map.put("ItemImage",R.drawable.checked);//圖像資源的ID
32. map.put("ItemTitle","Level"+i);
33. map.put("ItemText","Finishedin1Min54Secs,70Moves!");
34. listItem.add(map);
35. }
36. //生成適配器的Item和動態數組對應的元素
37. SimpleAdapterlistItemAdapter=newSimpleAdapter(this,listItem,//數據源
38. R.layout.list_items,//ListItem的XML實現
39. //動態數組與ImageItem對應的子項
40. newString[]{"ItemImage","ItemTitle","ItemText"},
41. //ImageItem的XML檔案裡面的一個ImageView,兩個TextViewID
42. newint[]{R.id.ItemImage,R.id.ItemTitle,R.id.ItemText}
43. );
45. //添加並且顯示
46. list.setAdapter(listItemAdapter);
48. //添加點擊
49. list.setOnItemClickListener(newOnItemClickListener(){
51. @Override
52. publicvoidonItemClick(AdapterView<?>arg0,Viewarg1,intarg2,
53. longarg3){
54. setTitle("點擊第"+arg2+"個項目");
55. }
56. });
58. //添加長按點擊
59. list.setOnCreateContextMenuListener(newOnCreateContextMenuListener(){
61. @Override
62. publicvoidonCreateContextMenu(ContextMenumenu,Viewv,ContextMenuInfomenuInfo){
63. menu.setHeaderTitle("長按選單-ContextMenu");
64. menu.add(0,0,0,"彈出長按選單0");
65. menu.add(0,1,0,"彈出長按選單1");
66. }
67. });
68. }
70. //長按選單回響函式
71. @Override
72. publicbooleanonContextItemSelected(MenuItemitem){
73. setTitle("點擊了長按選單裡面的第"+item.getItemId()+"個項目");
74. returnsuper.onContextItemSelected(item);
75. }
76. }