[Q] Fragment null pointer after orientation change topic

SOCIALIZE IT ⇨

Hi

I have a class Fragment_b extends Fragment with

Code:

    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.frag_b_layout, container, false);
        return view;
        }

frag_b_layout with root element of ScrollView containing a RelativeLayout with @+id/dummy for Android Studio ID sake.

in the container Activity

Code:

public class MainActivity extends ActionBarActivity{
    Fragment_b fragment_b;
    FragmentManager manager;
        //...
        FragmentTransaction transaction = manager.beginTransaction();
        public void myFunc(){
                if (fragment_b == null){
                        fragment_b = new Fragment_b();
                        transaction.add(R.id.container_activity_layout, fragment_b, "someTag");
                        transaction.commit();
                        //...
                }
        }                 
        //...
}

The problem is when the screen is rotated, fragment_b appears again but with fragment_b == null returns true, I was expecting
false. what can I do so that it works as I expect?

for no avail, I tried
in the AndroidManifest

Code:

android:windowSoftInputMode="stateUnchanged|adjustResize"

in the onActivityCreated of fragment_b

Code:

this.setRetainInstance(true);

Thank you

xda-developers

mobile

[Q] Fragment null pointer after orientation change topic

SOCIALIZE IT ⇨

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