Android : onSaveInstanceState causes the App to crash

I have an App with one main activity, and this activity has 5 actionTabs, each actionTab contains a fragment, so I have 5 fragments as well.

The first fragment just displaying the word "hello".

In the second fragment, It just displays some textviews to indicate which callback of the activity's lifecycle is being called.

The third fragment, in its layout, it contains a tablelayout with 3 rows, each row has a image, textviewand an edittext. And when access this fragment contained in thistab and when I rotate the device, the App does not crash.

The App crashes only when I access the fourth or the fifth tab and rotate the device which contains the following:

the fourth and the fifth tab have three LinearLayout and three relative layout respectively. The main linearlayout of the fourth fragment is oriented vertically, and the three nested linearlayouts are oriented horizontally, and each one of them contain imageview, textview and edittext.

The fifth fragemnt is almost the same as the fourth one, but instead of the linearlayouts, it has relativlayout.

To Note:

the second fragmenthas the method onSavedInstance, and when the App crashed when accessing the fourth or the fifth fragment, the logcat complains about the onSavedInstance and produce the below posted messages.

I want to know why the App crashes when I access either the fourth fragment or the fifth and rotate the device?

LogCat:

11-02 20:48:29.699: E/AndroidRuntime(22282): FATAL EXCEPTION: main

11-02 20:48:29.699: E/AndroidRuntime(22282): Process: com.example.viewpagerwithactiontabstest00, PID: 22282 11-02 20:48:29.699: E/AndroidRuntime(22282): java.lang.NullPointerException 11-02 20:48:29.699: E/AndroidRuntime(22282): at com.example.viewpagerwithactiontabstest00.Aufgabe_2.onSaveInstanceState(Aufgabe_2.java:142) 11-02 20:48:29.699: E/AndroidRuntime(22282): at android.support.v4.app.Fragment.performSaveInstanceState(Fragment.java:1647) 11-02 20:48:29.699: E/AndroidRuntime(22282): at android.support.v4.app.FragmentManagerImpl.saveFragmentBasicState(FragmentManager.java:1610)

onSavedInstance() methos:

@Override
public void onSaveInstanceState(Bundle outState) {
    // TODO Auto-generated method stub
    super.onSaveInstanceState(outState);

    outState.putString("TEXT", tv_00.getText().toString());
}