ImageSwitcher:

package com.imageswitcherdemo;

import android.os.Bundle;
import android.annotation.SuppressLint;
import android.app.ActionBar.LayoutParams;
import android.app.Activity;
import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.animation.AnimationUtils;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageSwitcher;
import android.widget.ImageView;
import android.widget.ViewSwitcher.ViewFactory;

@SuppressWarnings("deprecation")
public class ImageSwitcherDemo extends Activity implements
        OnItemSelectedListener, ViewFactory {
    private ImageSwitcher is;
    private Gallery gallery;

    //大圖
    private Integer[] mImageIds = { R.drawable.b1, R.drawable.b2, R.drawable.b3,
            R.drawable.b4, R.drawable.b5, };

    //小圖
    private Integer[] mThumbIds = { R.drawable.s1, R.drawable.s2, R.drawable.s3,
            R.drawable.s4, R.drawable.s5, };

    /*
     * (non-Javadoc)
     *
     * @see android.app.Activity#onCreate(android.os.Bundle)
     */
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.activity_main);

        is = (ImageSwitcher) findViewById(R.id.switcher);
        is.setFactory(this);

        is.setInAnimation(AnimationUtils.loadAnimation(this,
                android.R.anim.fade_in));
        is.setOutAnimation(AnimationUtils.loadAnimation(this,
                android.R.anim.fade_out));

        gallery = (Gallery) findViewById(R.id.gallery);

        gallery.setAdapter(new ImageAdapter(this));
        gallery.setOnItemSelectedListener(this);
    }

    @SuppressLint("InlinedApi")
    @Override
    public View makeView() {
        ImageView i = new ImageView(this);
        i.setBackgroundColor(0xFF000000);
        i.setScaleType(ImageView.ScaleType.FIT_CENTER);
        i.setLayoutParams(new ImageSwitcher.LayoutParams(
                LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
        return i;
    }

    public class ImageAdapter extends BaseAdapter {
        public ImageAdapter(Context c) {
            mContext = c;
        }

        public int getCount() {
            return mThumbIds.length;
        }

        public Object getItem(int position) {
            return position;
        }

        public long getItemId(int position) {
            return position;
        }

        @SuppressLint("InlinedApi")
        public View getView(int position, View convertView, ViewGroup parent) {
            ImageView i = new ImageView(mContext);

            i.setImageResource(mThumbIds[position]);
            i.setAdjustViewBounds(true);
            i.setLayoutParams(new Gallery.LayoutParams(
                    LayoutParams.WRAP_CONTENT,

LayoutParams.WRAP_CONTENT));
            i.setBackgroundResource(R.drawable.b4);
            return i;
        }

        private Context mContext;

    }

    @Override
    public void onItemSelected(AdapterView<?> parent, View view, int position,
            long id) {
        is.setImageResource(mImageIds[position]);

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

    }
}

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity" >

    <ImageSwitcher
        android:id="@+id/switcher"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true" />

    <Gallery
        android:id="@+id/gallery"
        android:layout_width="match_parent"
        android:layout_height="60dp"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true"
        android:background="#FF0000"
        android:gravity="center_vertical"
        android:spacing="16dp" />

</RelativeLayout>