GridView中放置水平滚动图像布局

[android]代码库

import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;

public class Test2Activity extends Activity
{
    /** Called when the activity is first created. */
    public Integer[] imageIDs =
    {
        R.drawable.library,
        R.drawable.library,
        R.drawable.library,
        R.drawable.library,
        R.drawable.library,
        R.drawable.library,
        R.drawable.library
    };

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

        GridView gridView = (GridView) findViewById (R.id.grid);
        gridView.setAdapter (new ImageAdapter (this, imageIDs) );
        gridView.setNumColumns (imageIDs.length);

    }

    class ImageAdapter extends BaseAdapter
    {
        private Context context;
        Integer[] imageIDs;

        public ImageAdapter (Context c, Integer[] imageIDResults)
        {
            context = c;
            imageIDs = imageIDResults;
        }

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

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

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

        public View getView (int position, View convertView, ViewGroup parent)
        {
            ImageView imageView;
            if (convertView == null)
            {
                imageView = new ImageView (context);
                imageView.setLayoutParams (new GridView.LayoutParams (100, 100) );
                imageView.setScaleType (ImageView.ScaleType.CENTER_CROP);
            }
            else
            {
                imageView = (ImageView) convertView;
            }
            imageView.setImageResource (imageIDs[position]);
            return imageView;
        }
    }
}