gridView ---图片显示类九宫格

public class GridViewActivity  extends Activity  {    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.grid_view);        setTitle("GridViewActivity");        GridView gridview = (GridView) findViewById(R.id.grid_view);        gridview.setAdapter(new ImageAdapter(this));    }            public class ImageAdapter extends BaseAdapter {        private Context mContext;        public ImageAdapter(Context c) {            mContext = c;        }        public int getCount() {            return mThumbIds.length;        }        public Object getItem(int position) {            return null;        }        public long getItemId(int position) {            return 0;        }        public View getView(int position, View convertView, ViewGroup parent) {            ImageView imageView;            if (convertView == null) {  // if it's not recycled, initialize some attributes                imageView = new ImageView(mContext);                imageView.setLayoutParams(new GridView.LayoutParams(85, 85));                imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);                imageView.setPadding(8, 8, 8, 8);            } else {                imageView = (ImageView) convertView;            }            imageView.setImageResource(mThumbIds[position]);            return imageView;        }        // references to our images        private Integer[] mThumbIds = {                R.drawable.grid_view_01, R.drawable.grid_view_02,                ......        };    }}