1 package com.example.test3_15;
 2 
 3 import android.app.Activity;
 4 import android.content.Context;
 5 import android.os.Bundle;
 6 import android.view.View;
 7 import android.view.ViewGroup;
 8 import android.widget.BaseAdapter;
 9 import android.widget.Gallery;
10 import android.widget.ImageView;
11 
12 public class MyActivity extends Activity {
13     /**
14      * Called when the activity is first created.
15      */
16     @Override
17     public void onCreate(Bundle savedInstanceState) {
18         super.onCreate(savedInstanceState);
19         setContentView(R.layout.main);
20         /* 获得Gallery对象，并添加ImageAdapter给Gallery对象*/
21         ((Gallery)findViewById(R.id.gallery)).setAdapter(new ImageAdapter(this));
22     }
23     public class ImageAdapter extends BaseAdapter
24     {
25         /* 定义Context */
26         private Context myContext;
27         /*使用android.R.drawable 里的图片作为图库源，类型为整数数组*/
28         private int[] myImageIds=
29                 {
30                         android.R.drawable.btn_minus,
31                         android.R.drawable.btn_radio,
32                         android.R.drawable.ic_lock_idle_low_battery,
33                         android.R.drawable.ic_menu_camera,
34                 };
35         /*构造器只有一个参数，即要存储的Context*/
36         public ImageAdapter(Context c){this.myContext=c;}
37         /*返回所有已定义的图片总数量*/
38         public int getCount(){return this.myImageIds.length;}
39         /*获取图片在库中的位置*/
40         public Object getItem(int posotion){return posotion;}
41         /*获取图片ID*/
42         public long getItemId(int posotion){return posotion;}
43         /*取得当前所要显示的图像View，传入数组ID值使之读取与成像*/
44         public View getView(int position,View convertView,ViewGroup parent)
45         {
46             /*创建一个ImageView对象*/
47             ImageView i=new ImageView(this.myContext);
48             /*给ImageView设置资源*/
49             i.setImageResource(this.myImageIds[position]);
50             /*设置显示比例类型 */
51             i.setScaleType(ImageView.ScaleType.CENTER);
52             /*设置这个ImageView对象的宽高，单位为dip*/
53             i.setLayoutParams(new Gallery.LayoutParams(120,120));
54             return i;
55 
56         }
57 
58     }
59 }

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout 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     <TextView
 8             android:id="@+id/myTextView01"
 9             android:layout_width="fill_parent"
10             android:layout_height="wrap_content"
11             android:layout_marginTop="15dp"
12             android:gravity="center"
13             android:text="@string/textView"
14             android:textColor="@drawable/blue"
15 
16             />
17     <Gallery
18             android:id="@+id/gallery"
19             android:layout_width="wrap_content"
20             android:layout_height="wrap_content"
21             android:layout_gravity="center"
22             />
23 </LinearLayout>