Android Exception : Concurentmodificationexception

I am getting this exception inconsistently while listview loading on back press from details of the item, which we selected. when I am going on this listview page it never throws e

Solution 1:

synchronized (this) {
            for (listModel current_item : items) {
                String current_section = current_item.getName().substring(0, 1).toUpperCase(Locale.getDefault());

                if (!prev_section.equals(current_section)) {
                    mListItems.add(current_section);
                    mListItems.add(current_item.getName());
                    // array list of section positions
                    mListSectionPos.add(mListItems.indexOf(current_section));
                    prev_section = current_section;
                } else {
                    mListItems.add(current_item.getName());
                }
            }
        }

The problem synchronized (this). Since you didn't provide stacktrace, I don't know the exception is thrown by which operation.

For example , if your exception is caused by multi-thread access to items , you can just replace this with items.