我从我的应用程序中获取用户报告,提供以下异常:

java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState
at android.app.FragmentManagerImpl.checkStateLoss(FragmentManager.java:1109)
at android.app.FragmentManagerImpl.popBackStackImmediate(FragmentManager.java:399)
at android.app.Activity.onBackPressed(Activity.java:2066)
at android.app.Activity.onKeyUp(Activity.java:2044)
at android.view.KeyEvent.dispatch(KeyEvent.java:2529)
at android.app.Activity.dispatchKeyEvent(Activity.java:2274)
at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchKeyEvent(PhoneWindow.java:1803)
at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1112)
at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1112)
at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1112)
at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchKeyEvent(PhoneWindow.java:1855)
at com.android.internal.policy.impl.PhoneWindow.superDispatchKeyEvent(PhoneWindow.java:1277)
at android.app.Activity.dispatchKeyEvent(Activity.java:2269)
at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchKeyEvent(PhoneWindow.java:1803)
at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1112)
at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1112)
at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1112)
at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1112)
at android.widget.TabHost.dispatchKeyEvent(TabHost.java:297)
at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1112)
at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1112)
at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1112)
at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchKeyEvent(PhoneWindow.java:1855)
at com.android.internal.policy.impl.PhoneWindow.superDispatchKeyEvent(PhoneWindow.java:1277)
at android.app.Activity.dispatchKeyEvent(Activity.java:2269)
at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchKeyEvent(PhoneWindow.java:1803)
at android.view.ViewRoot.deliverKeyEventPostIme(ViewRoot.java:2880)
at android.view.ViewRoot.handleFinishedEvent(ViewRoot.java:2853)
at android.view.ViewRoot.handleMessage(ViewRoot.java:2028)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:132)
at android.app.ActivityThread.main(ActivityThread.java:4028)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:491)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:844) …

我正在为我的应用程序使用支持库.在我的FragmentActivity中,我使用AsyncTask从Internet下载数据.在onPreExecute()方法中我添加了一个Fragment,在onPostExecute()方法中我再次删除它.当两者之间的方向发生变化时,我得到了上述异常.请看一下细节:

private class onFriendAddedAsyncTask extends AsyncTask<String, Void, String> {
    DummyFragment dummyFragment; 
    FragmentManager fm;
    FragmentTransaction ft;

@Override
protected void onPreExecute() {
    Log.v("MyFragmentActivity", "onFriendAddedAsyncTask/onPreExecute");
    dummyFragment = DummyFragment.newInstance();
    fm = getSupportFragmentManager();
    ft = fm.beginTransaction();
    ft.add(dummyFragment, "dummy_fragment");
    ft.commit();
}

@Override
protected void onPostExecute(String result) {
    Log.v("MyFragmentActivity", "onFriendAddedAsyncTask/onPostExecute");
    ft = fm.beginTransaction();
    ft.remove(dummyFragment);
    ft.commit();
}

@Override
protected String doInBackground(String... name) {
    Log.v("MyFragmentActivity", "onFriendAddedAsyncTask/doInBackground");
    ...
}

我得到了以下LogCut:

01-05 23:54:19.958: V/MyFragmentActivity(12783): onFriendAddedAsyncTask/onPreExecute
01-05 23:54:19.968: V/DummyFragment(12783): onAttach
01-05 23:54:19.968: V/DummyFragment(12783): onCreate
01-05 23:54:19.968: V/MyFragmentActivity(12783): onFriendAddedAsyncTask/doInBackground
01-05 23:54:19.973: V/DummyFragment(12783): onCreateView …

我有一个LoginActivity(用户登录).它基本上是它自己Activity的主题就像一个对话框(看起来像一个对话框).它出现在一个SherlockFragmentActivity.我想要的是:如果登录成功,应该有两个FragmentTransaction更新视图.这是代码:

在LoginActivity,如果成功登录,

setResult(1, new Intent());

在SherlockFragmentActivity:

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);

    if (resultCode == 1) {
        LoggedStatus = PrefActivity.getUserLoggedInStatus(this);
        FragmentTransaction t = MainFragmentActivity.this.getSupportFragmentManager().beginTransaction();
        SherlockListFragment mFrag = new MasterFragment();
        t.replace(R.id.menu_frame, mFrag);
        t.commit();

        // Set up Main Screen
        FragmentTransaction t2 = MainFragmentActivity.this.getSupportFragmentManager().beginTransaction();
        SherlockListFragment mainFrag = new FeaturedFragment();
        t2.replace(R.id.main_frag, mainFrag);
        t2.commit();
    }
}

它在第一次提交时崩溃,使用此LogCat:

E/AndroidRuntime(32072): Caused by: java.lang.IllegalStateException: Can not perform this action …

我在我的项目中使用了commit方法,它使用片段构建它.

无论如何,有时我得到IllegalStateException: Can not perform this action after onSaveInstanceState错误,我找不到任何关于它的好解决方案,但只是这种方法commitAllowingStateLoss().我改变了提交功能,commitAllowingStateLoss()但没有长时间使用它进行测试,所以这个功能可以帮助我吗？而主要的问题是,commit()和之间有什么区别commitAllowingStateLoss()？

我面临着DialogFragment/getSupportFragmentManager/Android版本4.x的问题

01-10 19:46:48.228: E/AndroidRuntime(9879): java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState
01-10 19:46:48.228: E/AndroidRuntime(9879):     at android.support.v4.app.FragmentManagerImpl.checkStateLoss(FragmentManager.java:1314)
01-10 19:46:48.228: E/AndroidRuntime(9879):     at android.support.v4.app.FragmentManagerImpl.enqueueAction(FragmentManager.java:1325)
01-10 19:46:48.228: E/AndroidRuntime(9879):     at android.support.v4.app.BackStackRecord.commitInternal(BackStackRecord.java:548)
01-10 19:46:48.228: E/AndroidRuntime(9879):     at android.support.v4.app.BackStackRecord.commit(BackStackRecord.java:532)
01-10 19:46:48.228: E/AndroidRuntime(9879):     at android.support.v4.app.DialogFragment.show(DialogFragment.java:127)
01-10 19:46:48.228: E/AndroidRuntime(9879):     at com.v1.mypck.TermsAndConditions.showDialog(TermsAndConditions.java:256)
01-10 19:46:48.228: E/AndroidRuntime(9879):     at com.v1.mypck.TermsAndConditions.handleMessage(TermsAndConditions.java:62)
01-10 19:46:48.228: E/AndroidRuntime(9879):     at com.v1.mypck.TermsAndConditions$IncomingHandler.handleMessage(TermsAndConditions.java:53)
01-10 19:46:48.228: E/AndroidRuntime(9879):     at android.os.Handler.dispatchMessage(Handler.java:99)
01-10 19:46:48.228: E/AndroidRuntime(9879):     at android.os.Looper.loop(Looper.java:137)
01-10 19:46:48.228: E/AndroidRuntime(9879):     at android.app.ActivityThread.main(ActivityThread.java:4441)
01-10 19:46:48.228: E/AndroidRuntime(9879):     at java.lang.reflect.Method.invokeNative(Native Method)
01-10 19:46:48.228: E/AndroidRuntime(9879):     at java.lang.reflect.Method.invoke(Method.java:511)
01-10 19:46:48.228: …

我的活动使用ACTION_IMAGE_CAPTURE意图调用相机.如果相机活动成功返回,我在onActivityResult回调中设置了一个标志,并根据标志的值我在onResume中启动一个片段,为捕获的图像添加标题.这似乎工作正常.

我只是从"狂野"中得到一个堆栈跟踪抱怨我在调用onSaveInstanceState后尝试提交片段事务.但我正在使用onResume方法进行提交!为什么android会抱怨这个？我的AndroidManifest.xml中设置了android:configChanges ="orientation | keyboardHidden | keyboard | screenSize",因此方向更改不应触发此....

这发生在运行4.0.4的三星Galaxy S3(SGH-i747)上

这是堆栈:

java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState
    at android.support.v4.app.FragmentManagerImpl.checkStateLoss(FragmentManager.java:1314)
    at android.support.v4.app.FragmentManagerImpl.enqueueAction(FragmentManager.java:1325)
    at android.support.v4.app.BackStackRecord.commitInternal(BackStackRecord.java:548)
    at android.support.v4.app.BackStackRecord.commit(BackStackRecord.java:532)
    at com.Familiar.Android.FamiliarAppV1.AddPhotosActivity2.performFragmentTransition(AddPhotosActivity2.java:278)
    at com.Familiar.Android.FamiliarAppV1.AddPhotosActivity2.switchToCaptionsFragment(AddPhotosActivity2.java:438)
    at com.Familiar.Android.FamiliarAppV1.AddPhotosActivity2.onResume(AddPhotosActivity2.java:167)
    at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1158)
    at android.app.Activity.performResume(Activity.java:4544)
    at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2448)
    at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2486)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1187)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:137)
    at android.app.ActivityThread.main(ActivityThread.java:4514)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:511)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:980)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:747)
    at dalvik.system.NativeStart.main(Native Method)

任何帮助或智慧都表示赞赏.

我的应用程序在一些用户设备上连续崩溃,但在Activity onStart方法中存在以下异常:

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.BackStackRecord.commitInternal(BackStackRecord.java:541)
at android.support.v4.app.BackStackRecord.commit(BackStackRecord.java:525)
at android.support.v4.app.DialogFragment.show(DialogFragment.java:123) 

我无法在我的模拟器中本地重现此错误.我在stackoverflow上找到了一些关于这个问题的问题: 这里和 这里

我已经尝试了建议的解决方案,即不允许onSaveInstance中的空包在片段或活动中.

但问题仍然存在.这是我遇到的唯一一个Crash报告,我不断得到它.

有没有人有工作的解决方案？

我的应用中有3个片段的活动.当按下第一个按钮时,会在Activity中调用一个方法,该方法执行一些不相关的操作然后调用finish().

这会触发onPause()片段,它会执行更多不相关的内容然后调用super.onPause().

然后,应用程序加载它出现的旧Activity(逻辑上跟随视图堆栈),并onDestroyView()在Fragment上调用时突然崩溃并出现以下异常:

FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to destroy activity {be.niteowl.niteowl.debug/be.niteowl.niteowl.views.activities.VenueActivity}: java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState
at android.app.ActivityThread.performDestroyActivity(ActivityThread.java:2793)
at android.app.ActivityThread.handleDestroyActivity(ActivityThread.java:2811)
at android.app.ActivityThread.access$2100(ActivityThread.java:123)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:972)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:130)
at android.app.ActivityThread.main(ActivityThread.java:3835)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:864)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:622)
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:1327)
at android.support.v4.app.FragmentManagerImpl.enqueueAction(FragmentManager.java:1338)
at android.support.v4.app.BackStackRecord.commitInternal(BackStackRecord.java:595)
at android.support.v4.app.BackStackRecord.commit(BackStackRecord.java:574)
at be.niteowl.niteowl.views.activities.TrackFragment.onDestroyView(TrackFragment.java:161)
at android.support.v4.app.Fragment.performDestroyView(Fragment.java:1665)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:980)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1088) …

嗨,我使用片段A和第二片段使用b.调用b和使用的asynctask 方法,但我第一次使用这是完美的工作,但第二次然后崩溃应用程序和我的错误登录下面:::我工作三星平板电脑完美工作但三星核心移动崩溃的应用程序.

E/AndroidRuntime: FATAL EXCEPTION: main
E/AndroidRuntime: java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState
E/AndroidRuntime:   at android.support.v4.app.FragmentManagerImpl.checkStateLoss(FragmentManager.java:1343)
E/AndroidRuntime:   at android.support.v4.app.FragmentManagerImpl.enqueueAction(FragmentManager.java:1361)
E/AndroidRuntime:   at android.support.v4.app.BackStackRecord.commitInternal(BackStackRecord.java:595)
E/AndroidRuntime:   at android.support.v4.app.BackStackRecord.commit(BackStackRecord.java:574)
E/AndroidRuntime:   at com.buymysari.fragment.SendImageServerFragment$SendImageServerTask.onPostExecute(SendImageServerFragment.java:158)
E/AndroidRuntime:   at com.buymysari.fragment.SendImageServerFragment$SendImageServerTask.onPostExecute(SendImageServerFragment.java:1)
E/AndroidRuntime:   at android.os.AsyncTask.finish(AsyncTask.java:631)
E/AndroidRuntime:   at android.os.AsyncTask.access$600(AsyncTask.java:177)
E/AndroidRuntime:   at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:644)
E/AndroidRuntime:   at android.os.Handler.dispatchMessage(Handler.java:99)
E/AndroidRuntime:   at android.os.Looper.loop(Looper.java:137)
E/AndroidRuntime:   at android.app.ActivityThread.main(ActivityThread.java:4960)
E/AndroidRuntime:   at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime:   at java.lang.reflect.Method.invoke(Method.java:511)
E/AndroidRuntime:   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1038)
E/AndroidRuntime:   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805)
E/AndroidRuntime:   at dalvik.system.NativeStart.main(Native Method)

我的班级用于:

public class TakeCameraFragment extends Fragment {
    Camera mCamera = null; …

背景

Android中的异步回调

尝试在Android上以可靠的方式执行异步操作是不必要的错综复杂的,即AsyncTask在概念上是否真的有缺陷,或者我只是缺少某些东西？

现在,这是在引入Fragments之前的全部内容.随着Fragments的引入,onRetainNonConfigurationInstance()已被弃用.因此,最新的Google宽恕黑客是使用持久的非UI片段,当发生配置更改时(即旋转屏幕,更改语言设置等),它会从您的Activity中附加/分离.

示例:https: //code.google.com/p/android/issues/detail？id = 23096#c4

IllegalStateException - 无法在onSaveInstanceState之后执行此操作

从理论上讲,上面的黑客可以让你绕过可怕的:

IllegalStateException - "Can not perform this action after onSaveInstanceState"

因为持久的非UI片段将接收onViewStateRestored()(或者onResume)和onSaveInstanceState()(或者onPause)的回调.因此,您可以判断实例状态何时被保存/恢复.这是一个很简单的代码,但是利用这些知识,您可以排队异步回调,直到活动的FragmentManager在执行它们之前将其mStateSaved变量设置为false.

mStateSaved是最终负责触发此异常的变量.

private void checkStateLoss() {
    if (mStateSaved) {
        throw new IllegalStateException(
                "Can not perform this action after onSaveInstanceState");
    }
    if (mNoTransactionsBecause != null) {
        throw new IllegalStateException(
                "Can not perform this action inside of " + mNoTransactionsBecause);
    }
}

所以从理论上讲,现在你知道什么时候执行片段事务是安全的,因此你可以避免可怕的IllegalStateException.

错误!

嵌套片段

上面的解决方案仅适用于Activity的FragmentManager.片段本身也有一个子片段管理器,用于嵌套片段.遗憾的是,子片段管理器根本不与Activity的片段管理器保持同步.因此,虽然活动的片段管理器是最新的,并且始终具有正确的mStateSaved; 儿童片段不这么认为,并且会在不适当的时候愉快地抛出可怕的IllegalStateException.

现在,如果您查看了支持库中的Fragment.java和FragmentManager.java,您将不会感到惊讶的是,所有与片段有关的内容都容易出错.设计和代码质量是......啊,有问题.你喜欢布尔吗？

mHasMenu = false
mHidden = false
mInLayout = …