Change fragment options menu after user sets a value in DialogFragment

Question

I have a Fragment A which shows a MenuItem Mi in the toolbar. On clicking Mi, I am showing a DialogFragment Df to the user to set a value V.

I am passing this value to fragment A by implementing a callback listener interface. Once the value is set, I want to hide Mi from toolbar menu of fragment A.

I wanted to handle this inside onPause() and onResume() of fragment A, but showing a DialogFragment doesn't change the lifecycle of fragment. I was wondering how to approach this problem.

How can I achieve this thing?

simply put, you want to hide Mi when Df is dismissed after user sets value V? — Mercato, Oct 28 '17 at 13:02
you can try with shared-preferences I think. set a flag to your menu's active/inactive state, and compare with it to show or hide the Mi — Sudheesh R, Oct 28 '17 at 14:15

score 0 · Accepted Answer · answered Oct 29 '17 at 08:55

I did this using a callback listener in my fragment A which listens to DialogFragment Df. Once the value V is set, this callback method in A is invoked. Inside this method, I am using V and setting a flag to indicate V has been set and then calling invalidateOptionsMenu().

Refer this for implementing your own callback. How to send data from DialogFragment to a Fragment?

public void myCallback(int V){
  //Use V according to my logic
   vIsSet = Boolean.TRUE;
   getActivity().invalidateOptionsMenu();
}

@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater){
    super.onCreateOptionsMenu(menu,inflater);
    if(vIsSet) {
        menu.removeItem(MENU_ITEM_ID);//item id of Mi
    }
}

Change fragment options menu after user sets a value in DialogFragment

1 Answers1