android-在GridView视图中设置水平滚动的图像布局

原问题来自于CSDN问答频道，更多解决方案见：http://ask.csdn.net/questions/373

原问题描述:

我想以gridview的视图显示图像缩略图，要求这些图像排成一列以水平滚动条的形式显示。我设置了很多参数，但是检查不出哪里出错了。显示出来的图像根本不是按照原计划显示的。

解决方案：

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;        }    }}