java.lang.IllegalStateException: Fragment FragmentDecks{221fd7ab} is not currently in the FragmentManager

[hadifar]

Thanks for your well written tutorial @fnk0

When i work with your code i face a problem , when select a category and then press back button and then rotate screen Or press menu button it throws an exception ( i think it's because cant save state of app so when i comment following line in onSaveInstanceState in MainActivity it doesn't gives me error anymore //getFragmentManager().putFragment(outState, "activeFragment", activeFragment);

Also this is Error i get

java.lang.IllegalStateException: Fragment FragmentDecks{221fd7ab} is not currently in the FragmentManager at android.app.FragmentManagerImpl.putFragment(FragmentManager.java:568) at com.essentialwords.amir.essentialwords.MainActivity.onSaveInstanceState(MainActivity.java:136) at android.app.Activity.performSaveInstanceState(Activity.java:1297) at android.app.Instrumentation.callActivityOnSaveInstanceState(Instrumentation.java:1272) at android.app.ActivityThread.callCallActivityOnSaveInstanceState(ActivityThread.java:3923) at android.app.ActivityThread.performStopActivityInner(ActivityThread.java:3334) at android.app.ActivityThread.handleStopActivity(ActivityThread.java:3390) at android.app.ActivityThread.access$1100(ActivityThread.java:144) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1307) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:135) at android.app.ActivityThread.main(ActivityThread.java:5221) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)

sorry for my bad English :) and tnx for your tutorial