Android 在GridView視圖中設置水平滾動的圖像布局

Android 在GridView視圖中設置水平滾動的圖像布局

問題描述:

我想以gridview的視圖顯示圖像縮略圖，要求這些圖像排成一列以水平滾動條的形式顯示。我設置了很多參數，但是檢查不出哪裡出錯了。顯示出來的圖像根本不是按照原計劃顯示的。

解決方案：

1. import android.app.Activity;
2. import android.content.Context;
3. import android.os.Bundle;
4. import android.view.View;
5. import android.view.ViewGroup;
6. import android.widget.BaseAdapter;
7. import android.widget.GridView;
8. import android.widget.ImageView;
10. public class Test2Activity extends Activity {
11. /** Called when the activity is first created. */
12. public Integer[] imageIDs = {
13. R.drawable.library,
14. R.drawable.library,
15. R.drawable.library,
16. R.drawable.library,
17. R.drawable.library,
18. R.drawable.library,
19. R.drawable.library
20. };
22. @Override
23. public void onCreate(Bundle savedInstanceState) {
24. super.onCreate(savedInstanceState);
25. setContentView(R.layout.main);
27. GridView gridView = (GridView) findViewById(R.id.grid);
28. gridView.setAdapter(new ImageAdapter(this, imageIDs));
29. gridView.setNumColumns(imageIDs.length);
31. }
33. class ImageAdapter extends BaseAdapter
34. {
35. private Context context;
36. Integer[] imageIDs;
38. public ImageAdapter(Context c, Integer[] imageIDResults)
39. {
40. context = c;
41. imageIDs = imageIDResults;
42. }
44. public int getCount() {
45. return imageIDs.length;
46. }
48. public Object getItem(int position) {
49. return position;
50. }
52. public long getItemId(int position) {
53. return position;
54. }
56. public View getView(int position, View convertView, ViewGroup parent)
57. {
58. ImageView imageView;
59. if (convertView == null) {
60. imageView = new ImageView(context);
61. imageView.setLayoutParams(new GridView.LayoutParams(100, 100));
62. imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
63. } else {
64. imageView = (ImageView) convertView;
65. }
66. imageView.setImageResource(imageIDs[position]);
67. return imageView;
68. }
69. }
70. }

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