佈局檔案如下：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <ImageSwitcher
        android:layout_width="320dp"
        android:layout_height="320dp"
        android:id="@+id/imageSwitcher"
        android:layout_marginTop="20dp"
        android:layout_gravity="center_horizontal"/>

    <Gallery
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:id="@+id/gallery"
        android:layout_marginTop="25dp"
        android:unselectedAlpha="0.6"
        android:spacing="3pt"
        android:layout_gravity="center_horizontal" />
</LinearLayout>
 

package com.example.administrator.gallerytest;

import android.content.res.TypedArray;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageSwitcher;
import android.widget.ImageView;
import android.widget.ViewSwitcher;

public class GalleryTest extends AppCompatActivity {
    int[] imageIds = new int[]{
            R.drawable.cat,//a picture about cat
            R.drawable.cherrytree,//a picture about cherrytree
            R.drawable.dog,//a picture about dog
            R.drawable.house,//a picture about house
            R.drawable.monkey,//a picture about monkey
            R.drawable.mountriver,//a picture about mount and river
            R.drawable.rabbit,//a picture about rabbit
            R.drawable.yellowflowers,//a picture about yellow flowers
            R.drawable.tree,//a picture about tree
            R.drawable.dragon,//a picture about dragon
            R.drawable.wolf,//a picture about wolf
            R.drawable.eagle,
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        final Gallery gallery = (Gallery)findViewById(R.id.gallery);
        //獲取顯示圖片的ImageSwitcher物件
        final ImageSwitcher switcher = (ImageSwitcher)findViewById(R.id.imageSwitcher);
        //為ImageSwitcher物件設定ViewFactory物件
        switcher.setFactory(new ViewSwitcher.ViewFactory() {
            @Override
            public View makeView() {
                ImageView imageView = new ImageView(GalleryTest.this);
                //影象檢視，用於支援 HTML <IMG> 標記。
                // 支援通過標記的 HEIGHT 和 WIDTH 屬性進行縮放。如果不能載入影象，
                // 則將呈現任何通過 ALT 屬性指定的文字。
                imageView.setBackgroundColor(0xff0000);
                imageView.setScaleType(ImageView.ScaleType.FIT_CENTER);
                imageView.setLayoutParams(new ImageSwitcher.LayoutParams(
                        ViewGroup.LayoutParams.WRAP_CONTENT,
                        ViewGroup.LayoutParams.WRAP_CONTENT));
                return imageView;
            }
        });
        //設定圖片更換的動畫效果
        switcher.setInAnimation(AnimationUtils.loadAnimation(this, android.R.anim.fade_in));
        switcher.setOutAnimation(AnimationUtils.loadAnimation(this, android.R.anim.fade_out));
        //建立一個BaseAdapter物件，該物件負責提供Gallery所顯示的每張圖片
        BaseAdapter adapter = new BaseAdapter() {
            //data source（資料來源）<------>adapter（介面卡）<------>listview（檢視控制元件）
            @Override
            public int getCount() {
                return imageIds.length;
            }

            @Override
            public Object getItem(int i) {
                return i;
            }

            @Override
            public long getItemId(int i) {
                return i;
            }
            //該方法返回的View就代表了每個列表項
            @Override
            public View getView(int i, View view, ViewGroup viewGroup) {
                //建立一個imageView
                ImageView imageView = new ImageView(GalleryTest.this);
                imageView.setImageResource(imageIds[i % imageIds.length]);
                //設定ImageView的縮放型別
                imageView.setScaleType(ImageView.ScaleType.FIT_XY);
                //把圖片按照指定的大小在View中顯示，拉伸顯示圖片，不保持原比例，
                // 全部顯示圖片填滿View.關鍵字：不保持比例，拉伸顯示全圖，填滿ImageView
                imageView.setLayoutParams(new Gallery.LayoutParams(75, 100));
                TypedArray typedArray = obtainStyledAttributes(R.styleable.Gallery);//??????
                imageView.setBackgroundResource(typedArray.getResourceId(
                        R.styleable.Gallery_android_galleryItemBackground, 0));
                return imageView;
            }
        };
        gallery.setAdapter(adapter);
        gallery.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {
                switcher.setImageResource(imageIds[i % imageIds.length]);
            }

            @Override
            public void onNothingSelected(AdapterView<?> adapterView) {
            }
        });
    }
}
 

圖片都是自己找的，放到drawable資料夾下面。