使用Gallery和ImageSwitcher實現滑動Gallery，切換ImageSwitcher的圖片。

佈局檔案

<LinearLayout 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"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:orientation="vertical"
    tools:context="com.example.gallerydemo.MainActivity" >

	<Gallery 
	    android:id="@+id/gallery"
	    android:layout_width="match_parent"
	    android:layout_height="wrap_content"/>
	<ImageSwitcher 
	    android:id="@+id/image_switcher"
	    android:layout_marginTop="60dp"
	    android:layout_width="match_parent"
	    android:layout_height="wrap_content">
	    
	</ImageSwitcher>
</LinearLayout>
 

public class ImageAdapter extends BaseAdapter{
	private int[] res;
	private Context context;
	public ImageAdapter(int []res,Context context){
		this.res = res;
		this.context = context;
	}
	@Override
	public int getCount() {
		// TODO Auto-generated method stub
		return res.length;
	}
	@Override
	public Object getItem(int position) {
		// TODO Auto-generated method stub
		return res[position];
	}
	@Override
	public long getItemId(int position) {
		// TODO Auto-generated method stub
		return position;
	}
	@Override
	public View getView(int position, View convertView, ViewGroup parent) {
		ImageView image = new ImageView(context);
		image.setBackgroundResource(res[position%res.length]);
		image.setLayoutParams(new Gallery.LayoutParams(200,150));
		image.setScaleType(ScaleType.FIT_XY);
		return image;
	}
}
 

public class MainActivity extends Activity implements OnItemSelectedListener,ViewFactory{
	private int[] res = {R.drawable.item1,R.drawable.item2,R.drawable.item3,
			R.drawable.item4,R.drawable.item5,R.drawable.item6,
			R.drawable.item7,R.drawable.item8,R.drawable.item9,
			R.drawable.item10,R.drawable.item11,R.drawable.item12};
	private Gallery gallery;
	private ImageAdapter adapter;
	private ImageSwitcher is;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        gallery = (Gallery)findViewById(R.id.gallery);
        is = (ImageSwitcher)findViewById(R.id.image_switcher);
        adapter = new ImageAdapter(res, this);
        gallery.setAdapter(adapter);
        gallery.setOnItemSelectedListener(this);
        is.setFactory(this);
        is.setInAnimation(AnimationUtils.loadAnimation(this, android.R.anim.fade_in));
        is.setOutAnimation(AnimationUtils.loadAnimation(this, android.R.anim.fade_out));
    }
	@Override
	public void onItemSelected(AdapterView<?> parent, View view, int position,
			long id) {
		// 使用ImageSwitcher
		is.setBackgroundResource(res[position]);
	}
	@Override
	public void onNothingSelected(AdapterView<?> parent) {
		// TODO Auto-generated method stub
		
	}
	@Override
	public View makeView() {
		// TODO Auto-generated method stub
		ImageView image = new ImageView(this);
		image.setScaleType(ScaleType.FIT_CENTER);
		return image;
	}
}