Android控件GridView學習筆記

GridView最常用的就是用來顯示九宮格這類似的。比如下面這個圖：

像這種，上面一個圖片，下面一段文字，這些是非常常見的。實現方法如下：

首先是GridView的一個Item的xml格式文件：

1. <?xml version="1.0" encoding="utf-8"?>
3. <RelativeLayout Android:id="@+id/widget33"
4. android:layout_width="fill_parent" android:layout_height="wrap_content"
5. xmlns:android="http://schemas.android.com/apk/res/android"
6. android:paddingBottom="5dip">
8. <ImageView
9. android:id="@+id/item_image"
10. android:layout_centerHorizontal="true"
11. android:layout_width="wrap_content"
12. android:layout_height="wrap_content"/>
14. <TextView
15. android:id="@+id/item_text"
16. android:layout_below="@id/item_image"
17. android:layout_width="wrap_content"
18. android:layout_height="wrap_content"
19. android:layout_centerHorizontal="true"/>
20. </RelativeLayout>

然後在需要的地方寫一個GridView

1. <GridView
2. android:id="@+id/gv_buttom_menu"
3. android:layout_width="fill_parent"
4. android:layout_height="65sp"
5. android:layout_alignParentBottom="true">
6. </GridView>

下面是實現方法：

1. private void loadGridView()
2. {
3. gv_buttom_menu = (GridView) findViewById(R.id.gv_buttom_menu);
4. gv_buttom_menu.setBackgroundResource(R.drawable.channelgallery_bg);
5. gv_buttom_menu.setNumColumns(5);
6. gv_buttom_menu.setGravity(Gravity.CENTER);
7. gv_buttom_menu.setHorizontalSpacing(10);
8. gv_buttom_menu.setVerticalSpacing(10);
9. ArrayList<HashMap<String, Object>> data = new ArrayList<HashMap<String, Object>>();
10. HashMap<String, Object> map = new HashMap<String, Object>();
11. map.put("itemImage", R.drawable.menu_new_user);
12. map.put("itemText", "增加");
13. data.add(map);
15. map = new HashMap<String, Object>();
16. map.put("itemImage", R.drawable.menu_search);
17. map.put("itemText", "查找");
18. data.add(map);
20. map = new HashMap<String, Object>();
21. map.put("itemImage", R.drawable.menu_delete);
22. map.put("itemText", "刪除");
23. data.add(map);
25. map = new HashMap<String, Object>();
26. map.put("itemImage", R.drawable.controlbar_showtype_list);
27. map.put("itemText", "菜單");
28. data.add(map);
30. map = new HashMap<String, Object>();
31. map.put("itemImage", R.drawable.menu_exit);
32. map.put("itemText", "退出");
33. data.add(map);
35. SimpleAdapter adapter = new SimpleAdapter(this, data,
36. R.layout.itemmenu, new String[]
37. { "itemImage", "itemText" }, new int[]
38. { R.id.item_image, R.id.item_text });
39. gv_buttom_menu.setAdapter(adapter);

1. //GridView上的item監聽

1. gv_buttom_menu.setOnItemClickListener(new OnItemClickListener()
2. {
4. @Override
5. public void onItemClick(AdapterView<?> parent, View view,
6. int position, long id)
7. {
8. switch (position)
9. {
10. case 0:
11. {
12. startActivity(new Intent(StudentManagerActivity.this,
13. AddStudentActivity.class));
14. break;
15. }
16. case 1:
17. {
19. break;
20. }
21. case 2:
22. {
24. break;
25. }
26. case 3:
27. {
29. break;
30. }
31. case 4:
32. {
33. finish();
34. break;
35. }
36. default:
37. break;
38. }
40. }
42. });
43. }