来自android开发者(创建列表和卡片):

RecyclerView小部件是一个更高级和灵活的版本 列表视图。

好吧,这听起来很酷,但当我看到这张示例图片时,我真的很困惑这两者之间的区别。

上面的图片可以通过ListView使用自定义适配器轻松创建。

那么,在什么情况下应该使用RecyclerView呢?


当前回答

In my opinion RecyclerView was made to address the problem with the recycle pattern used in listviews because it was making developer's life more difficult. All the other you could handle more or less. For instance I use the same adapter for ListView and GridView it doesn't matter in both views the getView, getItemCount, getTypeCount is used so it's the same. RecyclerView isn't needed if ListView with ListAdapter or GridView with grid adapters is already working for you. If you have implemented correctly the ViewHolder pattern in your listviews then you won't see any big improvement over RecycleView.

其他回答

以下是RecyclerView和ListView之间的几个关键点/区别。明智地接电话。

If ListView works for you, there is no reason to migrate. If you are writing a new UI, you might be better off with RecyclerView. RecylerView has inbuilt ViewHolder, doesn't need to implement our own like in listView. It support notify at particular index as well Things like animating the addition or removal of items are already implemented in the RecyclerView without you having to do anything We can associate a layout manager with a RecyclerView, this can be used for getting random views in recycleview while this was limitation in ListView In a ListView, the only type of view available is the vertical ListView. There is no official way to even implement a horizontal ListView. Now using a RecyclerView, we can have a i) LinearLayoutManager - which supports both vertical and horizontal lists, ii) StaggeredLayoutManager - which supports Pinterest like staggered lists, iii) GridLayoutManager - which supports displaying grids as seen in Gallery apps. And the best thing is that we can do all these dynamically as we want.

为了使列表视图具有良好的性能,您需要实现holder模式,这很容易搞砸,特别是当您想用几种不同类型的视图填充列表时。

RecyclerView烘焙了这个模式,使它更难以搞砸。它也更灵活,更容易处理不同的布局,不是直线,如网格。

我用RecyclerView工作了一点,仍然喜欢ListView。

当然,它们都使用ViewHolders,所以这不是一个优势。 RecyclerView在编码方面更加困难。 RecyclerView不包含页眉和页脚,所以它是一个减号。 ListView不需要创建ViewHolder。如果你想要一个带有分段或子标题的列表,那么创建独立的项(没有ViewHolder)是个好主意,这样更容易,也不需要单独的类。

RecyclerView相对于listview的优点:

默认包含ViewHolder。 简单的动画。 支持水平,网格和交错布局

listView相对于recyclerView的优点:

易于添加分隔线。 可以使用内置的arrayAdapter简单的普通列表 支持页眉和页脚。 支持OnItemClickListner。

RecyclerView被创建为一个ListView的改进,所以是的,你可以创建一个附加列表与ListView控件,但使用RecyclerView更容易,因为它:

在向上/向下滚动时重用单元格——这在ListView适配器中实现View Holder是可能的,但这是一个可选的事情,而在RecycleView中,这是默认的写适配器的方式。 解耦列表从它的容器-所以你可以很容易地把列表项在运行时在不同的容器(线性布局,gridLayout)通过设置LayoutManager。

例子:

mRecyclerView = (RecyclerView) findViewById(R.id.my_recycler_view);
mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
//or
mRecyclerView.setLayoutManager(new GridLayoutManager(this, 2));

动画常用列表动作——动画被解耦并委托给ItemAnimator。

还有更多关于RecyclerView的内容,但我认为这些要点是主要的。

因此,综上所述,RecyclerView是处理“列表数据”的一个更灵活的控件,它遵循关注点的委托模式,只留给自己一个任务——回收项目。