测试同学跑Monkey跑出了这个异常导致的crash，对应的Android版本是Android6.0。
补充：出问题的Activity是使用了ViewPager无限循环展示图片，内容是ImageView，不是Fragment。
但是我的应用中没有用到任何Fragment，任何commit方法。详细Log如下：

java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState at android.app.FragmentManagerImpl.checkStateLoss(FragmentManager.java:1438)     at android.app.FragmentManagerImpl.popBackStackImmediate(FragmentManager.java:581)     at android.app.Activity.onBackPressed(Activity.java:2537)     at android.app.Activity.onKeyUp(Activity.java:2511)     at android.view.KeyEvent.dispatch(KeyEvent.java:2695)     at android.app.Activity.dispatchKeyEvent(Activity.java:2764)     at com.android.internal.policy.PhoneWindow$DecorView.dispatchKeyEvent(PhoneWindow.java:2384)     at android.view.ViewRootImpl$ViewPostImeInputStage.processKeyEvent(ViewRootImpl.java:4687)     at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:4643)     at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:4155)     at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:4208)     at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:4174)     at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:4320)     at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:4182)     at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:4377)     at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:4155)     at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:4208)     at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:4174)     at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:4182)     at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:4155)     at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:4208)     at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:4174)     at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:4353)     at android.view.ViewRootImpl$ImeInputStage.onFinishedInputEvent(ViewRootImpl.java:4523)     at android.view.inputmethod.InputMethodManager$PendingEvent.run(InputMethodManager.java:2336)     at android.view.inputmethod.InputMethodManager.invokeFinishedInputEventCallback(InputMethodManager.java:1940)     at android.view.inputmethod.InputMethodManager.finishedInputEvent(InputMethodManager.java:1931)     at android.view.inputmethod.InputMethodManager$ImeInputEventSender.onInputEventFinished(InputMethodManager.java:2313)     at android.view.InputEventSender.dispatchInputEventFinished(InputEventSender.java:141)     at android.os.MessageQueue.nativePollOnce(Native Method)     at android.os.MessageQueue.next(MessageQueue.java:328)     at android.os.Looper.loop(Looper.java:164)     at android.app.ActivityThread.main(ActivityThread.java:5811)     at java.lang.reflect.Method.invoke(Native Method)     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:844)     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:734)

在StackOverFlow上搜到了类似的问题：http://stackoverflow.com/ques...

StackOverFlow上说要重写onSaveInstaceState方法，去掉super调用，但是我不清楚这样做是否存在负作用，所以希望有经验的人指导一下如何解决这个问题。