1 <LinearLayout  xmlns:android="http://schemas.android.com/apk/res/android"2     xmlns:tools="http://schemas.android.com/tools"3     android:orientation="vertical"4     android:layout_width="match_parent"5     android:layout_height="match_parent" >6 7     <ImageView8         android:id="@+id/imageView"9         android:layout_width="match_parent"
10         android:layout_height="wrap_content"    >
11     </ImageView>
12
13     <Gallery
14         android:id="@+id/gallery"
15         android:layout_width="match_parent"
16         android:layout_height="wrap_content"
17         android:spacing="2dp"
18         android:layout_marginTop="5dp"    >
19     </Gallery>
20
21 </LinearLayout>

 1 　　/*2      * Function   :    ImageAdapter类，继承自BaseAdapter3      * Author     :    博客园-依旧淡然4      */5     public class ImageAdapter extends BaseAdapter {6 7         Context mContext;        //上下文对象8         9         //构造方法
10         public ImageAdapter(Context context) {
11             this.mContext = context;
12         }
13
14         //获取图片的个数
15         public int getCount() {
16             return mImageResourceIds.length;
17         }
18
19         //获取图片在库中的位置
20         public Object getItem(int position) {
21             return mImageResourceIds[position];
22         }
23
24         //获取图片在库中的位置
25         public long getItemId(int position) {
26             return position;
27         }
28
29         //获取适配器中指定位置的视图对象
30         public View getView(int position, View convertView, ViewGroup parent) {
31             ImageView imageView = new ImageView(mContext);
32             imageView.setImageResource(mImageResourceIds[position]);
33             imageView.setLayoutParams(new Gallery.LayoutParams(120, 120));
34             imageView.setScaleType(ImageView.ScaleType.FIT_CENTER);
35             return imageView;
36         }
37
38     }

1 　　mGallery.setOnItemClickListener(new OnItemClickListener() {
2    　　 public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
3             mImageView.setBackgroundResource(mImageResourceIds[arg2]);
4        }
5    });