android: alphabet indexer / display alphabets while scrolling.

class MyCursorAdapter extends SimpleCursorAdapter implements SectionIndexer {

AlphabetIndexer alphaIndexer;

public MyCursorAdapter(Context context, int layout, Cursor c,
String[] from, int[] to) {

super(context, layout, c, from, to);

alphaIndexer = new AlphabetIndexer(c,
c.getColumnIndex(Dbasehelper.COL_WORD),
" ABCDEFGHIJKLMNOPQRSTUVWXYZ");
}

@Override
public int getPositionForSection(int section) {

return alphaIndexer.getPositionForSection(section); // use the
// indexer

}

@Override
public int getSectionForPosition(int position) {

return alphaIndexer.getSectionForPosition(position); // use the
// indexer

}

@Override
public Object[] getSections() {

return alphaIndexer.getSections(); // use the indexer

}

}