相关疑难解决方法(0)

使用兼容包以使用Fragments定位2.2.

重新编码活动以在应用程序中使用片段后,我无法获得方向更改/状态管理工作,因此我创建了一个带有单个FragmentActivity和单个片段的小型测试应用程序.

方向更改的日志很奇怪,多次调用片段OnCreateView.

我显然缺少一些东西 - 比如分离片段并重新连接它而不是创建一个新实例,但是我看不到任何可以指示我出错的文档.

请问有人能说清楚我在做错了吗.谢谢

方向更改后的日志如下.

Initial creation
12-04 11:57:15.808: D/FragmentTest.FragmentTestActivity(3143): onCreate
12-04 11:57:15.945: D/FragmentTest.FragmentOne(3143): OnCreateView
12-04 11:57:16.081: D/FragmentTest.FragmentOne(3143): OnCreateView->SavedInstanceState null


Orientation Change 1
12-04 11:57:39.031: D/FragmentTest.FragmentOne(3143): onSaveInstanceState
12-04 11:57:39.031: D/FragmentTest.FragmentTestActivity(3143): onCreate
12-04 11:57:39.031: D/FragmentTest.FragmentOne(3143): OnCreateView
12-04 11:57:39.031: D/FragmentTest.FragmentOne(3143): OnCreateView->SavedInstanceState not null
12-04 11:57:39.031: D/FragmentTest.FragmentOne(3143): OnCreateView
12-04 11:57:39.167: D/FragmentTest.FragmentOne(3143): OnCreateView->SavedInstanceState null


Orientation Change 2
12-04 11:58:32.162: D/FragmentTest.FragmentOne(3143): onSaveInstanceState
12-04 11:58:32.162: D/FragmentTest.FragmentOne(3143): onSaveInstanceState
12-04 11:58:32.361: D/FragmentTest.FragmentTestActivity(3143): onCreate
12-04 11:58:32.361: D/FragmentTest.FragmentOne(3143): OnCreateView
12-04 11:58:32.361: D/FragmentTest.FragmentOne(3143): OnCreateView->SavedInstanceState not null
12-04 11:58:32.361: …

我正在处理片段事务,而backstack是这样的:

fragA => fragB => fragC => fragD

我想从碎片回来之后回到fragA

fragD => onBackPress => fragA

所以,我试过像:

getChildFragmentManager().popBackStack(null, FragmentManager.POP_BACK_STACK_INCLUSIVE);

但它清除了所有的后台堆叠,如何将第一个碎片保留在后台堆叠中？非常感谢