gridview--基本的gridview

GridView 元素距离设定

因为该设定比较简单 防止以后忘记 所以贴 供自己查阅

1. 布局：main.xml

1. <?xml version="1.0" encoding="utf-8"?>
2. <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
3. android:orientation="vertical"
4. android:layout_width="fill_parent"
5. android:layout_height="fill_parent"
6. >
7. <GridView
8. android:id="@+id/grid"
9. android:layout_width="fill_parent"
10. android:layout_height="wrap_content"
11. android:layout_centerInParent="true"
12. android:horizontalSpacing="50dp"
13. android:verticalSpacing="50dp"
14. />
15. </RelativeLayout>

2. *.jave: GriUsage.java

1. public class GridUsage extends Activity {
2. GridView grid;
3. ImageAdapter iAdapter;
4. String[] text = {
5. "one","two","three","four","five","six","seven","eight","nine","ten"
6. };
7. /** Called when the activity is first created. */
8. @Override
9. public void onCreate(Bundle savedInstanceState) {
10. super.onCreate(savedInstanceState);
11. setContentView(R.layout.main);
12. grid = (GridView)findViewById(R.id.grid);
13. iAdapter = new ImageAdapter(this);
14. grid.setAdapter(iAdapter);
15. grid.setNumColumns(3);
16. }
17. public class ImageAdapter extends BaseAdapter {
18. Activity activity;
19. public ImageAdapter(Activity a){
20. activity = a;
21. }
22. @Override
23. public int getCount() {
24. // TODO Auto-generated method stub
25. return text.length;
26. }
27. @Override
28. public Object getItem(int arg0) {
29. // TODO Auto-generated method stub
30. return null;
31. }
32. @Override
33. public long getItemId(int arg0) {
34. // TODO Auto-generated method stub
35. return arg0;
36. }
37. @Override
38. public View getView(int position, View convertView, ViewGroup parent) {
39. // TODO Auto-generated method stub
40. TextView tv;
41. if(convertView == null){
42. tv = new TextView(activity);
43. }
44. else {
45. tv = (TextView)convertView;
46. }
47. tv.setSingleLine(true);
48. tv.setBackgroundResource(R.drawable.back);
49. tv.setGravity(Gravity.CENTER);
50. tv.setText(text[position]);
51. return tv;
52. }
53. }
54. }

3. emulator 运行截图：

that's all.  any idea or other are welcome!!!!