Forcing a DialogFragment to not recreate after orientation change

Question

When I'm changing the orientation of my app with a visible DialogFragment opened from my Activity, the dialog will be recreated. How can I forcefully dismiss it?

For now I tried to store it as a member in my activity and dismiss it in onCreate but at this point it seems to be null;

Answer 1

To disable recreations of DialogFragments of a specific type, you can override onCreate in your derived DialogFragment class and dismiss the dialog in case it is being recreated:

public class MyDialogFragment extends DialogFragment
{
    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);

        if (savedInstanceState != null)
        {
            dismiss();
        }
    }
    ...

Answer 2

As @Luksprog mentioned in the comments, a solution could be:

Give a tag to your DialogFragment at creation:

FragmentManager fragmentManager = getSupportFragmentManager();
MyDialogFragment.newInstance(...).show(fragmentManager, "myTag");

Search for it and dismiss it in onCreate

MyDialogFragment dialog = ((MyDialogFragment)getSupportFragmentManager().findFragmentByTag("myTag"));
if (dialog != null) {
    dialog.dismiss();
}

I think it would be more efficient to disable the recreation of the DialogFragment altogether but I don't know if that's possible.