更新recylerview中的单个项目.我正在使用分页库，并且想更新单个项目/行 [英] Updating a single item in a recylerview. I am using paging library and would like to update a single item/row

问题描述

我正在使用提交列表将pagedlist值传递给适配器.当我更新单个项目时，请考虑在recyclerview中单击供稿的赞"按钮.如何更新单个项目.

I am passing pagedlist values to adapter using submit list. when i update a single item consider i am clicking a like button of a feed in a recyclerview. how to update the single item.

我正在按照此示例进行分页实施

i am following this example for paging implementation

https://github.com/saquib3705/PagingLibrarySampleApp

仅加载数据并更新recyclerview.我想为项目添加喜欢"按钮，并在用户喜欢如何实现时更新列表. 也看看这个，这正是我真正在寻找的东西 不使用Room(网络)更新PagingLibrary中的列表项(网络仅限

which just loads data and update the recyclerview. I would like to add like button for the items and update the list when user liked how to achieve it. Also look at this which is what i m exactly looking for Update list items in PagingLibrary w/o using Room (Network only)

推荐答案

假设我的猜测是正确的:

Assuming my guess is correct:

1. 您的视图模型具有LiveData<PagedList<Article>> getter
2. 您具有PagedListAdapter实现，并通过submitList
将数据设置到其中
3. 您在列表和列表项之间共享视图模型(自然)

1. Your view model has LiveData<PagedList<Article>> getter
2. You have PagedListAdapter implementation and set data into it via submitList
3. You share your view model between list and list item (which is natural)

然后将其添加到您的适配器构造函数中(自然，Article只是表示某些实体的示例类，您将拥有自己的实体):

Then by adding this into your adapter constructor (naturally Article is just sample class representing some entity, you will have your own) :

        super(new DiffUtil.ItemCallback<Article>() {
            @Override
            public boolean areItemsTheSame(@NonNull Article article1, @NonNull Article article2) {
                return article1.getId().equals(article2.getId());
            }

            @Override
            public boolean areContentsTheSame(@NonNull Article article1, @NonNull Article article2) {
                return article1.equals(article2);
            }
        });

...您的问题已自动解决.

...you have your question solved automatically.

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