支持-v4.app.fragment和app.fragment之间的区别？ [英] Difference between support-v4.app.fragment and app.fragment?

问题描述

我是新来的碎片，并有一个问题：
当我更新我的SDK工具，去创建一个项目（分= api8，默认的），我发现在我引用的库Android的支持，v4.jar。

I am new to fragments and had a question: When I updated my SDK tool and went to create a project(min = api8, the default one), I noticed the android-support-v4.jar in my Referenced Library.

当我伸出我的课，并试图使用片段类，我发现有2一是android.app.Fragment等是android.support。 v4.app.Fragment。什么是这两者之间有什么区别？

When I extended my class and tried to use the Fragment class, I found out there are 2. One is android.app.Fragment and other is android.support.v4.app.Fragment. What is the difference between these two?

推荐答案

如果你正在为Android开发3+，你可以使用app.Fragment。

If you're developing for Android 3+, you can use app.Fragment.

然而，在3，碎片还不存在。这就是支持库的用武之地。它提供了片段旧版本的Andr​​oid。

However, in 3-, Fragments didn't exist yet. That is where the support library comes in. It provides Fragments for older versions of Android.

又见此链接

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