RecyclerView notifyDataSetChanged滚动到顶部 [英] RecyclerView notifyDataSetChanged scrolls to top position

问题描述

在RecyclerView上调用notifyDataSetChanged时，它不保留滚动位置并滚动到顶部，有什么解决方法可以保留其滚动位置?

when calling notifyDataSetChanged on RecyclerView it doesn't retain the scroll position and scrolls to top, is there any solution to retain it's scroll position?

推荐答案

如果您的RecyclerView列表项的父项具有"wrap_content"属性，则Recyclerview会再次计算高度并滚动到顶部.

If your RecyclerView list item parent has "wrap_content" property, Recyclerview calculates the heights again and scrolls top.

有两种解决方案:

1. 将身高设置为恒定值，例如:layout_height="100dp"

2. 像这样使用StaggeredGridLayoutManager:

1. Set your height a constant value like this: layout_height="100dp"

2. Use StaggeredGridLayoutManager like this:

mRecyclerView.setLayoutManager(new StaggeredGridLayoutManager(1, StaggeredGridLayoutManager.VERTICAL));

第二种解决方案效率更高，我建议采用这种解决方案

The second solution is more efficient and I suggest this one

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