How to call a method from MainActivity when clicking on ReryclerView element?

Question

Java

I did it like this, but it doesn’t work, I don’t understand how to use point 4, what needs to be passed to the constructor from the adapter so that it doesn’t equal null?

public interface OnRecyclerViewItemClickListener {
    void onClick();
}

public class MainActivity extends AppCompatActivity implements OnRecyclerViewItemClickListener {

    ...

    @Override
    public void onClick() {

    }
}

In adapter:

private OnRecyclerViewItemClickListener mClickListener;

public MyAwesomeAdapter(OnRecyclerViewItemClickListener clickListener) {
    mClickListener = clickListener;
}

if (mClickListener != null) {
    mClickListener.onClick();
}

How to set a click event handler?

Answer 1

In this option, when creating an adapter in an activity, you need to pass this to the constructor.