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?
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
我只是想强调RecyclerView是兼容包的一部分。这意味着每个应用程序都有自己的RecyclerView实现,而不是使用来自操作系统的特性和代码。潜在地,类似RecyclerView的功能可以成为未来操作系统的一部分,从那里使用它是有益的。例如,Harmony OS很快就会发布。将来可以更改兼容性包许可证,这可能是一种暗示。缺点总结:
许可 更大的足迹,尤其是作为许多应用程序的一部分 如果一些来自操作系统的功能可以存在,那么效率就会下降
但值得注意的是,一些功能的实现,如滑动项目,来自RecyclerView。
以上所说的一切都必须加以考虑。
其他回答
您可以使用接口来提供单击侦听器。我用这个 技术与ListViews。 无需分隔:只需在行中添加宽度为的视图 Match_parent和1dp的高度,并给它一个背景色。 简单地使用StateList选择器作为行背景。 addHeaderView也可以在ListViews中避免使用:只需将 视图外的标头。
所以,如果效率是你所关心的,那么是的,用RecyclerView替换ListView是个好主意。
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。
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.
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.
ListView和RecyclerView之间有很多区别,但你应该特别注意以下几点:
ViewHolder模式在ListView中是完全可选的,但它被烘焙到RecyclerView中。 ListView只支持垂直滚动,但RecyclerView并不局限于垂直滚动列表。