Android多个SimpleCursorAdapter

cursorh = dbAdapter.fetchAllHighPrio();
cursorm = dbAdapter.fetchAllMedPrio();
cursorl = dbAdapter.fetchAllLowPrio();

startManagingCursor(cursorh);
startManagingCursor(cursorm);
startManagingCursor(cursorl);

String[] from = new String[] { TodoDbAdapter.KEY_SUMMARY };
int[] to = new int[] { R.id.label };

SimpleCursorAdapter noteh = new SimpleCursorAdapter(this,
        R.layout.todo_row_high, cursorh, from, to);
SimpleCursorAdapter notem = new SimpleCursorAdapter(this,
        R.layout.todo_row_med, cursorm, from, to);
SimpleCursorAdapter notel = new SimpleCursorAdapter(this,
        R.layout.todo_row_low, cursorl, from, to);