Change BottomNavigationView with a button inside a RecyclerView Item

Question

The application has a BottomNavigationView for navigating between fragments. One of the Fragments related to the BottomNavigationView has a Fragment as a child containing a RecyclerView and each RecyclerView Item has a Button attached to it.

I would need to navigate the BottomNavigationView to another Fragment with an OnClick of the Button (Highlighted with the red) inside the RecyclerView Item. I have tried different ways but I have not gotten it to work so far. The Click is handled inside the Adapter of the RecyclerView. (The code inside the OnClickListener is just to clarify what I am trying to do.)

 @Override
    public void onBindViewHolder(@NonNull LocationsViewHolder holder, int position) {
        ...

        holder.showMarkerButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

            
              BottomNavigationView navigation = (BottomNavigationView)v.findViewById(R.id.nav_view);
                navigation.setSelectedItemId(R.id.navigation_map);

                    }
        });
    }

Answer 1

The easiest way is created an interface implemented by your Activity

First create an interface that i called OnItemClick :

public interface OnItemClick{

    void onItemClick();
}

Following on your activity implement this interface like below :

public class MainActivity extends AppCompatActivity implements OnItemClick{

    /*
        rest of your code
    */

    @Override
    public void onItemClick() {
        navigation.setSelectedItemId(R.id.navigation_map);
    }
}

On your Fragment you need to pass the Activity into your Adapter

YourAdapter adapter = new YourAdapter(requireActivity());

And on your adapter you need to initialize the interface like below :

 OnItemClick listener;

 public YourAdapter(Activity activity) {
        listener= ((MainActivity) activity);
    }

And finaly to call the method on your activity just call it like below

 @Override
    public void onBindViewHolder(@NonNull LocationsViewHolder holder, int position) {
        ...

        holder.showMarkerButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                     listener.onItemClick();

                 }
        });
    }