在机器人高效的ListView高效、机器人、ListView

2023-09-12 10:09:46 作者:Lullaby(催眠)

什么是构建的ListView ,使用最少的内存可能的最佳方式?这一点很重要,因为我遇到了一些实现,大部分的时候我滚动的ListView 在低端设备落后,但我看到一些应用程序,其中滚动非常流畅,即使在低端设备。怎样才能做到呢?什么是从一个内存使用点的最有效的方式来构建这样一个的ListView

What is the best way of constructing a ListView that uses the least memory possible? This is important, because I met a few implementations and most of them is lagging when I scroll the ListView on low-end devices, but I saw a few apps, where the scroll is very smooth, even on low-end devices. How can it be done? What is the most efficient way from a memory usage point of view to construct such a ListView?

推荐答案

回收的 getView你的意见() 使用 ViewHolder 模式 使用延迟加载,如果你有大量的数据来填充列表 使用光标从光标,如果你的数据来自数据库建立基础数据,而不是对象列表,你救内存没有创造额外的对象。 看http://www.google.com/events/io/2010/sessions/world-of-listview-android.html 在看到 http://android.amberfog.com/?p=296

recycle your views in getView() use ViewHolder pattern use lazy loading if you have a lot of data to fill the list with use Cursor as underlying data instead of object list built from cursor if your data comes from database, you save memory by not creating additional objects. see http://www.google.com/events/io/2010/sessions/world-of-listview-android.html see http://android.amberfog.com/?p=296