What the original ID in MediaStore.Images.Thumbnails.getThumbnail?

Question

I use gridView to get the file list. But it can not use filelist.get(position)

I want to get the Thumbnails by using

MediaStore.Images.Thumbnails.getThumbnail(getActivity().getContentResolver(), origId, Images.Thumbnails.MICRO_KIND, null);

But what the origId of image here ???

Is that mean path or name ?

-------------------------------------------------EDIT---------------------------------------

The full code is like the following:

I want to get Thumbnails at getView.

viewTag is the other class , it store the textview.

so viewTag.mFilename.setText(filename); is equal to Textview.setText.

public class LocalFileListAdapter extends BaseAdapter {

        private LayoutInflater mInflater ;
        private ArrayList<FileNode> mFileList ;
        private static final String TAG = "MJPEG Player" ;
        private Context mContext;

        public LocalFileListAdapter(LayoutInflater inflater, ArrayList<FileNode> fileList) {
            mInflater = inflater ;
            mFileList = fileList ;
        }

        public void GridAdapter(Context ctx) {
            // TODO Auto-generated method stub
            mContext = ctx; 
        }

        @Override
        public int getCount() {
            return mFileList == null ? 0 : mFileList.size() ;
        }

        @Override
        public Object getItem(int position) {
            return mFileList == null ? null : mFileList.get(position) ;
        }

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


        @Override
        public View getView(int position, View convertView, ViewGroup parent) {

            ViewTag viewTag ;

            if (convertView == null) {

                convertView = mInflater.inflate(R.layout.filelist_row, null) ;

                TextView fileListName = (TextView) convertView.findViewById(R.id.fileListName);
                fileListName.setSelected(true);

                viewTag = new ViewTag(mContext , (ImageView) convertView.findViewById(R.id.fileListThumbnail), 
                        (ImageView) convertView.findViewById(R.id.select) ,
                        mFileList.get(position) , fileListName , 
                        (TextView) convertView.findViewById(R.id.fileListSize) , 
                        (ImageView) convertView.findViewById(R.id.video_layout) , 
                        (TextView) convertView.findViewById(R.id.fileListTime));

                convertView.setTag(viewTag) ;

            } else {
                viewTag = (ViewTag) convertView.getTag() ;
            }

            viewTag.mFileNode = mFileList.get(position) ;
            String filename = viewTag.mFileNode.mName.substring(viewTag.mFileNode.mName.lastIndexOf("/") + 1) ;

            viewTag.mFilename.setText(filename);

                            MediaStore.Images.Thumbnails.getThumbnail(getActivity().getContentResolver(), Long.parseLong(mFileList.get(position)), Images.Thumbnails.MICRO_KIND, null);

            return convertView ;
        }
    }

How to get the image Id ?

Answer 1

That's just an ID that each image has.

From the docs:

The original image for the thumbnail Type: INTEGER (ID from Images table)

http://developer.android.com/reference/android/provider/MediaStore.Images.Thumbnails.html#IMAGE_ID

So, it's neither the path, or the name. It's an internally generated ID for each image in the MediaStore. It's generally the Uri to the image.