How to call a method in an activity from a fragment?

Question

Java

I can not call a method from a fragment in the Main Activity
so I try to call it in the activity

а
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
     int id = item.getItemId();

        if (id == R.id.action_progress_show) {
            progress_menu_item.setActionView(R.layout.menu_item_layout);
 //ТАК Я ЕГО ПЫТАЮСЬ вЫЗвАТЬ в mAİN ACTİVİTY
            TwoFragment  fragment = new TwoFragment();
       fragment. Refress();
   return true;
        }
        return super.onOptionsItemSelected(item);
    }

and this is the method in the fragment

А вОТ МЕТОД вО ФРАГМЕНТЕ 
  }
    public void Refress(){
        mWebView.reload();
        
    }



}

Answer 1

You are creating a new fragment in the activity instead of looking for the old fragment.
1. add a tag to the fragment in the FragmentTransaction.add
method 2. use the appropriate method to find the fragment
findFragmentByTag
findFragmentById

Answer 2

Understanding this mess is certainly not the most pleasant experience, but as I understand it, you simply create a new fragment in onOptionsItemSelected , but you want to do something in an existing one.