IllegalStateException: Fragment has not been attached yet.

[Airsaid]

• 错误日志：

1 android.support.v4.app.Fragment.M(Unknown Source)
--
2 android.support.v4.app.Fragment.u(Unknown Source)
3 com.app.hubert.guide.core.Controller.void addListenerFragment()(Unknown Source)
4 ##_parent_##1##_parent_##
5 ##_child_## android.content.SharedPreferences access$600(com.app.hubert.guide.core.Controller)##_child_##
6 com.app.hubert.guide.core.Controller.void showGuidePage()(Unknown Source)
7 ##_parent_##1##_parent_##
8 ##_child_## void access$400(com.app.hubert.guide.core.Controller)##_child_##
9 com.app.hubert.guide.core.Controller$1.void run()(Unknown Source)
10 android.os.Handler.handleCallback(Handler.java:751)
11 android.os.Handler.dispatchMessage(Handler.java:95)
12 android.os.Looper.loop(Looper.java:154)
13 android.app.ActivityThread.main(ActivityThread.java:6146)
14 java.lang.reflect.Method.invoke(Native Method)
15 com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)
16 com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)

• 系统版本：Android 7.0

• 设备信息：SMART Champ 4.0

[cooliceman]

Fatal Exception: java.lang.IllegalStateException: Fragment has not been attached yet. at android.support.v4.app.Fragment.instantiateChildFragmentManager + 2383(Fragment.java:2383) at android.support.v4.app.Fragment.getChildFragmentManager + 845(Fragment.java:845) at com.app.hubert.guide.core.Controller.removeListenerFragment + 291(Controller.java:291) at com.app.hubert.guide.core.Controller.showNextOrRemove + 192(Controller.java:192) at com.app.hubert.guide.core.Controller.access$700 + 39(Controller.java:39) at com.app.hubert.guide.core.Controller$3.onGuideLayoutDismiss + 172(Controller.java:172) at com.app.hubert.guide.core.GuideLayout.dismiss + 255(GuideLayout.java:255) at com.app.hubert.guide.core.GuideLayout.remove + 247(GuideLayout.java:247) at com.app.hubert.guide.core.GuideLayout$2.onClick + 210(GuideLayout.java:210) at android.view.View.performClick + 4508(View.java:4508) at android.view.View$PerformClick.run + 18675(View.java:18675)

same problem at removeListenerFragment