Android UI How to - Use PagerAdapter to display Image

The following code shows how to Use PagerAdapter to display Image.
Example

import android.content.Context;
import android.graphics.Color;
import android.support.v4.view.PagerAdapter;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.app.Activity;
import android.os.Bundle;
import android.support.v4.view.ViewPager;
//w  w w  .  j  a  v a2 s  .c  om
public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        ViewPager pager = new ViewPager(this);
        pager.setAdapter(new ImagePagerAdapter(this));
        
        setContentView(pager);
    }
}

class ImagePagerAdapter extends PagerAdapter {
    private Context mContext;
    
    private static final int[] IMAGES = {
        android.R.drawable.ic_menu_camera,
        android.R.drawable.ic_menu_add,
        android.R.drawable.ic_menu_delete,
        android.R.drawable.ic_menu_share,
        android.R.drawable.ic_menu_edit
    };
    
    private static final int[] COLORS = {
        Color.RED,
        Color.BLUE,
        Color.GREEN,
        Color.GRAY,
        Color.MAGENTA
    };
    
    public ImagePagerAdapter(Context context) {
        super();
        mContext = context;
    }
    @Override
    public int getCount() {
        return 5;
    }
    @Override
    public float getPageWidth(int position) {
        return 0.333f;
    }
    @Override
    public Object instantiateItem(ViewGroup container, int position) {
        ImageView iv = new ImageView(mContext);

        iv.setImageResource(IMAGES[position]);
        iv.setBackgroundColor(COLORS[position]);

        container.addView(iv);
        return iv;
    }
    
    @Override
    public void destroyItem(ViewGroup container, int position, Object object) {
        container.removeView((View) object);
    }
    
    @Override
    public boolean isViewFromObject(View view, Object object) {
        return (view == object);
    }
    
}