如果我在一个XML布局声明一个片段，我怎么把它传递一个包？ [英] If I declare a fragment in an XML layout, how do I pass it a Bundle?

问题描述

我有，我已经更换成片段的活动。活动采取了原意，即对哪些数据的活动应该显示一些额外的信息。

现在，我的活动仅仅是一个围绕一个片段，做同样的工作，我如何得到这个包的片段，如果我宣布了片段与XML标签包装？

如果我是用FragmentTransaction把碎片成一个ViewGroup中，我会得到通过这个信息沿着片段构造一个机会，但我不知道在哪里的片段在XML中定义的情况。

解决方案

  

现在，我的活动仅仅是一个围绕一个片段，做同样的工作，我如何得到这个包的片段，如果我宣布了片段与XML标签包装？

您不能。

不过，欢迎您来电 findFragmentById（）在 FragmentManager 检索片段后的通货膨胀，然后调用片段上的一些方法将数据与它相关联。虽然显然这不可能是 setArguments（），您的片段可以安排守住数据本身过去通过其他方式进行配置更改（的onSaveInstanceState <$ C C $>（） ， setRetainInstance（真），等等）。

I've got an activity that I've replaced with a fragment. The activity took an Intent that had some extra information on what data the activity was supposed to display.

Now that my Activity is just a wrapper around a Fragment that does the same work, how do I get that bundle to the Fragment if I declare the fragment in XML with the tag?

If I were to use a FragmentTransaction to put the Fragment into a ViewGroup, I'd get a chance to pass this info along in the Fragment constructor, but I'm wondering about the situation where the fragment is defined in XML.

解决方案

Now that my Activity is just a wrapper around a Fragment that does the same work, how do I get that bundle to the Fragment if I declare the fragment in XML with the tag?

You can't.

However, you are welcome to call findFragmentById() on your FragmentManager to retrieve the fragment post-inflation, then call some method on the fragment to associate data with it. While apparently that cannot be setArguments(), your fragment could arrange to hold onto the data itself past a configuration change by some other means (onSaveInstanceState(), setRetainInstance(true), etc.).

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