在执行recyclerView拖放操作后，将新职位保存在会议室中降低

我已经在我的应用程序中实现了具有拖放功能的recyclerView.一切正常，直到重新启动该应用程序为止-应用程序未保存/记住任何拖放更改.

I've implemented a recyclerView with a drag and drop feature in my app. Everything works fine until the app is relaunched --any drag and drop changes were not saved/remembered by the app.

我尝试过:

• 使用SharedPreference + GSON
• 在此处阅读有关此类的其他SQLite答案，例如:保罗·伯克的中篇文章

• Using SharedPreference + GSON
• Reading other SQLite answers here on SO like this one: Store new position of RecyclerView items in SQLite after being dragged and dropped
• Reading Paul Burke's Medium Post

我当前的代码如下:

在onCreate中

 ItemViewModel itemViewModel = ViewModelProviders.of(this).get(ItemViewModel.class);
    itemViewModel.getAllItems().observe(this, new Observer<List<Item>>() {
        @Override
        public void onChanged(List<Item> items) {

         adapter.setItemList(items);
         itemList = items; //Global variable itemList


        }
    });

拖动/移动项目时调用的方法

private void swap(int firstPosition, int secondPosition) {
    Collections.swap(itemList, firstPosition, secondPosition);
        for(int i = 0; i < itemList.size(); i++) {
            Item currentItem = itemList.get(i);
            ItemViewModel.update(currentItem );
        }
        adapter.notifyItemMoved(firstPosition, secondPosition);
     }

有什么想法可以让我的应用在拖放后保存重新排序的recyclerView?预先感谢.

Any ideas how I can let my app save the reordered recyclerView after drag and drop? Thanks in advance.