sectionsWithFirstLetter.java

@Override 
protected TreeMap<Integer, Object> initializeSections(Cursor c) 
{
	TreeMap<Integer, Object> sections = new TreeMap<Integer, Object>();
	int offset = 0, i = 0;
	
	while (c.moveToNext())
	{
		String firstname = c.getString(c.getColumnIndex(CursorSectionDirectoryDatabase.COL_FIRSTNAME));
		String firstLetter = firstname.substring(0, 1);
		
		if (!sections.containsValue(firstLetter))
		{
			sections.put(offset+i, firstLetter);
			offset++;
		}
		i++;
	}
	
	return sections;
}