如何实时更新RecyclerView? [英] How can I update RecyclerView in real time?

问题描述

我有一个列表，任何用户都可以随时更新.该列表由 RecyclerView 显示.我想实时更新此列表，以便用户获得更好的用户体验，因为用户无需执行多次刷新.现在的问题是，如何实时更新此列表?

I have a list which can be updated any time by any user. The list is showed by in a RecyclerView. I want to update this list in real time so that user can get a better user experience because user need not to perform refresh several times. Now question is, how can I update this list in real time ?

推荐答案

使用RecyclerView，您可以使用适配器更新单个项目，项目范围或整个列表.

With RecyclerView you can either update a single item, item range or the whole list with the adapter.

您必须使用RecyclerView适配器的方法，例如adapter#notifyItem***或adapter#notifyDataSetChanged()(这将更新RecyclerView中的整个项目列表).

You have to use RecyclerView adapter's method like adapter#notifyItem*** or adapter#notifyDataSetChanged() (this will update the whole list of items in the RecyclerView).

class RVAdapter extends ...{ 
   List<?> itemList;

public void updateList (List<Object> items) {
        if (items != null && items.size() > 0) {
            itemList.clear();
            itemList.addAll(items);
            notifyDataSetChanged();
        }
    }

}

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