Recyclerview notifyItemInserted不更新滚动条 [英] Recyclerview notifyItemInserted not updating scrollbar

问题描述

我想在我的recyclerview中添加项目，并相应地更新滚动条.

I want to add items to my recyclerview and that my scrollbar is updated accordingly.

这是我的RecyclerView:

Here is my RecyclerView :

<android.support.v7.widget.RecyclerView
        android:id="@+id/recyclerView"
        android:layout_width="match_parent"
        android:layout_height="300dp"
        android:scrollbars="vertical"
        android:scrollbarThumbVertical="@color/clear_grey"
        android:fadeScrollbars="false"
        />

将元素添加到数据集中后，我正在调用

After adding an element to my dataset, I am calling

recyclerViewAdapter.notifyItemInserted(recyclerViewAdapter.getItemCount() - 1);

问题是，滚动条未更新:我必须触摸视图才能对其进行更新.

The problem is, the scrollbar is not updated : I have to touch the views for it to be updated.

我正在使用

recyclerViewAdapter.notifyDataSetChanged();

滚动条已更新，但是我不能使用此解决方案.(我需要能够从视图中选择文本，这对于notifyDataSetChanged是不可能的.)

The scrollbar is updated, but I can't use this solution. (I need to be able to select text from the views, which is impossible with notifyDataSetChanged.)

关于如何更新滚动条的任何想法吗?

Any ideas on how to update the scrollbar ?

推荐答案

结果是我将fixedSize设置为true:

Turns out I had set fixedSize to true :

recyclerView.setHasFixedSize(true);

感谢此 https://stackoverflow.com/a/40373122/2437227 ，我尝试了没有它，它起作用了.

And thanks to this https://stackoverflow.com/a/40373122/2437227, I tried without it and it works.

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