+ public long getItemId(int position) {
+ TransactionListItem item = listDiffer.getCurrentList()
+ .get(position);
+ switch (item.getType()) {
+ case HEADER:
+ return -1;
+ case TRANSACTION:
+ return item.getTransaction()
+ .getLedgerId();
+ case DELIMITER:
+ return -item.getDate()
+ .toDate()
+ .getTime();
+ default:
+ throw new IllegalStateException("Unexpected value: " + item.getType());
+ }
+ }
+ @Override