如何在RecyclerView的末尾添加按钮? [英] How to add a button at the end of RecyclerView?

问题描述

我想在RecyclerView的末尾显示一个按钮.

I want to show a button at the end of RecyclerView.

有了ListView，有一个方法addFooterView()，如何使用RecylerView进行同样的操作.

With ListView there was a method addFooterView(), how to do the same with RecylerView.

推荐答案

一种实现方法是使页脚视图成为适配器的"ViewType". 为此，请覆盖getItemViewType以为您的上一个项目返回不同的值.

One way to do it would be to make your footer view a "ViewType" of your adapter. In order to do that, overrides getItemViewType to return a different value for your last item.

@Override
public int getItemViewType(int position) {
    return (position == mData.size()) ? VIEW_TYPE_FOOTER : VIEW_TYPE_CELL;
}

然后在onCreateViewHolder中处理不同的viewType.

Then in the onCreateViewHolder, handle the different viewType.

@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

    if (viewType == VIEW_TYPE_CELL) {

        //Create viewholder for your default cell
    }
    else {

        //Create viewholder for your footer view
    }
}

不要忘记通过添加1来更新getCount()返回的值，并区分OnBindViewHolder中的两种ViewHolder类型(例如，instanceof).

Don't forget to update the value return by getCount() by adding 1, and to distinguish the 2 types of ViewHolder in OnBindViewHolder (with instanceof for example).

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