CODEWITHSUNDEEP
android
Eugene
Eugene

Reputation: 60184

How to recreate a listener passed to DialogFragment after orientation change?

I have a DialogFragment which do some work by means of listener which I pass to it on its creation. Listener is a Fragment instance which implements required interface. Everything is fine but on orientation change everything is recreating and I'm missing listener, so just bumping into NullPointeException. How to handle this situation? Should I just close the DialogFragment if orientation change happens? I don't think users will like this behavior. So I need to recreate a listener... but how?

Upvotes: 5

Views: 2466

Answers (1)

asenovm
asenovm

Reputation: 6517

Why not use the Fragment#setTargetFragment method. Like so

public class Fragment1 extends Fragment {
    ...
    public void createFragment2(){
        final Fragment dialogFragment = new MyDialogFragment();
        dialogFragment.setTargetFragment(this);
        dialogFragment.show();
    }
}


public class Fragment2 extends DialogFragment{
    ...
    public void onEvent(){
        ((Fragment1)getTargetFragment()).onEvent();
    }
}

Upvotes: 3

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