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自定义选项卡视图中的片段生命周期

[英]Fragment LIfecycle in Custom Tab View

原文 2012-05-13 03:55:40 5 1 android

I have a custom widget that performs FragmentTransaction.replace when buttons are pressed. 我有一个自定义窗口小部件，当按下按钮时会执行FragmentTransaction.replace。 Currently, my code is set up such that the first time a fragment is created, it attaches a bunch of stuff to the view that isn't originally part of the xml layout file. 当前，我的代码已设置为第一次创建片段时，会将一堆东西附加到最初不是xml布局文件一部分的视图中。

When the app first launches, all my fragments show stuff correctly, however, let's say I start on Fragment A. I can then transition to Fragment B (with B showing up correctly), however, when I transition back to Fragment A, all the stuff I have attached to the view of Fragment A is now gone. 当应用首次启动时，我所有的片段都正确显示了东西，例如，我从片段A开始。然后，我可以过渡到片段B（B正确显示），但是，当我过渡回片段A时，所有我附加到片段A的视图的东西现在不见了。 I know this happens because onCreateView is called which probably means the Fragment's view is re-generated when FragmentTransaction.replace is called. 我知道发生这种情况是因为调用了onCreateView，这可能意味着在调用FragmentTransaction.replace时将重新生成Fragment的视图。

Is there a way where I can keep my fragments around instead of having them re-generate their views when FragmentTransaction.replace is called? 有没有一种方法可以让我的片段保持原状，而不是在调用FragmentTransaction.replace时让它们重新生成视图？

Thanks! 谢谢！

1 个解决方案

Instead of using fragmentTransaction.replace, use fragmentTransaction.show and fragmentTransaction.hide. 代替使用fragmentTransaction.replace，而使用fragmentTransaction.show和fragmentTransaction.hide。

That will keep your fragments from being destroyed. 这样可以防止碎片被破坏。