我似乎还不清楚如何处理我的活动中同时出现的片段和其他事情。以下是堆栈跟踪:
java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=2, result=-1, data=Intent { (has extras) }} to activity {com.ghcssoftware.gedstar/com.ghcssoftware.gedstar.GedStar}: java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState
at android.app.ActivityThread.deliverResults(ActivityThread.java:2747)
at android.app.ActivityThread.handleSendResult(ActivityThread.java:2790)
at android.app.ActivityThread.access$2000(ActivityThread.java:122)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1035)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:132)
at android.app.ActivityThread.main(ActivityThread.java:4028)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:491)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:844)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:602)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState
at android.support.v4.app.FragmentManagerImpl.checkStateLoss(FragmentManager.java:1299)
at android.support.v4.app.FragmentManagerImpl.enqueueAction(FragmentManager.java:1310)
**at android.support.v4.app.FragmentManagerImpl.popBackStack(FragmentManager.java:471)
at com.ghcssoftware.gedstar.PersonTab$PersonTabFrag.popStack(PersonTab.java:157)**
at com.ghcssoftware.gedstar.PersonTab$PersonTabFrag.fillData(PersonTab.java:165)
at com.ghcssoftware.gedstar.ViewTab.fillData(ViewTab.java:96)
at com.ghcssoftware.gedstar.GedStar.fillData(GedStar.java:589)
at com.ghcssoftware.gedstar.GedStar.onActivityResult(GedStar.java:514)
at android.app.Activity.dispatchActivityResult(Activity.java:4541)
at android.app.ActivityThread.deliverResults(ActivityThread.java:2743)
看起来我需要在这个函数中调用popBackStack,以清除一个我的视图面板中堆叠的任何片段:
// Pop fragments from second pane
private void popStack() {
if (mDualPane && mBottomId >= 0) {
mViewTab.getTabHelper().tabGetFragManager().popBackStack(mBottomId,
FragmentManager.POP_BACK_STACK_INCLUSIVE);
mBottomId = -1;
}
}
主要我不确定为什么在调用“onSaveInstanceState”之后会发生任何这样的情况,或者是否真的是这种情况。有可能的解释吗? popBackStackImmediate 会有所不同吗?
值得一提的是,在我的测试中我无法重现这些情况,所以它只出现在报告中。