如何使用androidx从另一个片段调用片段方法

public class FragmentB extends Fragment {

    private OnMethodCallListener mListener;

    public interface OnMethodCallListener {
        void onMethodCalled();
    }

    @Override
    public void onAttach(Context context) {
        super.onAttach(context);
        if (context instanceof OnMethodCallListener) {
            mListener = (OnMethodCallListener) context;
        } else {
            throw new RuntimeException(context.toString()
                    + " must implement OnMethodCallListener");
        }
    }

    @Override
    public void onDetach() {
        super.onDetach();
        mListener = null;
    }

    // 这是你想要从其他片段调用的方法
    public void someMethodInFragmentB() {
        // ...
    }
}

public class MainActivity extends AppCompatActivity implements FragmentB.OnMethodCallListener {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // ...
    }

    @Override
    public void onMethodCalled() {
        FragmentB fragmentB = (FragmentB) getSupportFragmentManager().findFragmentById(R.id.fragment_b);
        if (fragmentB != null) {
            fragmentB.someMethodInFragmentB();
        }
    }
}

public class FragmentA extends Fragment {

    private OnMethodCallListener mListener;

    @Override
    public void onAttach(Context context) {
        super.onAttach(context);
        if (context instanceof OnMethodCallListener) {
            mListener = (OnMethodCall▶Listener) context;
        } else {
            throw new RuntimeException(context.toString()
                    + " must implement OnMethodCallListener");
        }
    }

    @Override
    public void onDetach() {
        super.onDetach();
        mListener = null;
    }

    public void callMethodInFragmentB() {
        if (mListener != null) {
            mListener.onMethodCalled();
        }
    }
}