如何在网格视图中将图像和视频显示为缩略图？

如何在网格视图中将图像和视频显示为缩略图？

是..

经过长时间的实验，我得到了答案：这是：

public class GridGallery extends Activity{    ArrayList<String>list;        @Override    public void onCreate(Bundle savedInstanceState)    {        super.onCreate(savedInstanceState);        setContentView(R.layout.grid_gallery);        DataModel dbModel = new DataModel(this);        list = dbModel.selectAll();        GridView sdcardImages = (GridView) findViewById(R.id.sdcard);        sdcardImages.setAdapter(new ImageAdapter(this));        }         private class ImageAdapter extends baseAdapter {        private final Context context;  public ImageAdapter(Context localContext) { context = localContext;        }        public int getCount()         { return list.size();        }        public Object getItem(int position)         { return position;        }        public long getItemId(int position)         { return position;        }        public View getView(int position, View convertView, ViewGroup parent)         { ImageView picturesView; if (convertView == null) {     picturesView = new ImageView(context);          if(list.get(position).contains(".jpg"))     {          bitmap = BitmapFactory.depreFile(list.get(position)); //Creation of Thumbnail of image     }     else if(list.get(position).contains(".mp4"))     {         bitmap = ThumbnailUtils.createVideoThumbnail(list.get(position), 0); //Creation of Thumbnail of video     }     picturesView.setScaleType(ImageView.ScaleType.FIT_CENTER);     picturesView.setPadding(8, 8, 8, 8);     picturesView.setLayoutParams(new GridView.LayoutParams(100, 100)); } else  {     picturesView = (ImageView)convertView; } return picturesView;        }    }}

这对我来说很好