Activity 和 FragmentActivity 的区别 [英] Difference between Activity and FragmentActivity
问题描述
我在处理片段时遇到了两个被多次使用的 Activity
和 FragmentActivity
.我想知道这两者之间有什么区别,因为当我用 FragmentActivity
更改 Activity
时,它对应用程序没有影响.
I was working on fragments and came across two things Activity
and FragmentActivity
which are used several times. I want to know that is there any difference between these two, because when I changed Activity
with FragmentActivity
, it had no effect on the app.
推荐答案
A FragmentActivity
是 Activity
的子类,专为 Android 支持包.
A FragmentActivity
is a subclass of Activity
that was built for the Android Support Package.
FragmentActivity
类添加了几个新方法以确保与旧版本的 Android 兼容,但除此之外,两者之间确实没有太大区别.只需确保将所有对 getLoaderManager()
和 getFragmentManager()
的调用更改为 getSupportLoaderManager()
和 getSupportFragmentManager()
分别.
The FragmentActivity
class adds a couple new methods to ensure compatibility with older versions of Android, but other than that, there really isn't much of a difference between the two. Just make sure you change all calls to getLoaderManager()
and getFragmentManager()
to getSupportLoaderManager()
and getSupportFragmentManager()
respectively.
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