正如标题所说，我想在一个片段中捕获带有EditText的用户名，并在第二个片段的TextView中显示它。
我正在阅读很多关于它的不同信息，但我不能从中理解，更不用说让它工作了。
这是一个大学项目，目标是制作一个碎片抽屉，就像它是一个服务应用程序。而且，我对Java几乎一无所知，因此我很挣扎。
有人能教我怎么做吗？先谢谢你了。：D

package com.example.devmobile.ui.home;

import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.TextView;

import androidx.annotation.NonNull;
import androidx.fragment.app.Fragment;
import androidx.lifecycle.ViewModelProvider;

import com.example.devmobile.databinding.FragmentHomeBinding;

public class HomeFragment extends Fragment {

    private FragmentHomeBinding binding;

    public View onCreateView(@NonNull LayoutInflater inflater,
                             ViewGroup container, Bundle savedInstanceState) {
        HomeViewModel homeViewModel =
                new ViewModelProvider(this).get(HomeViewModel.class);

        binding = FragmentHomeBinding.inflate(inflater, container, false);
        View root = binding.getRoot();

        final TextView textView = binding.textHome;
        homeViewModel.getText().observe(getViewLifecycleOwner(), textView::setText);
        return root;
    }


    @Override
    public void onDestroyView() {
        super.onDestroyView();
        binding = null;
    }
}

package com.example.devmobile.ui.catalogo;

import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import androidx.annotation.NonNull;
import androidx.fragment.app.Fragment;
import androidx.lifecycle.ViewModelProvider;

import com.example.devmobile.databinding.FragmentCatalogoBinding;
import com.example.devmobile.ui.home.HomeViewModel;

public class CatalogoFragment extends Fragment {

    private FragmentCatalogoBinding binding;

    public View onCreateView(@NonNull LayoutInflater inflater,
                             ViewGroup container, Bundle savedInstanceState) {
        HomeViewModel catalogoViewModel =
                new ViewModelProvider(this).get(HomeViewModel.class);

        binding = FragmentCatalogoBinding.inflate(inflater, container, false);
        View root = binding.getRoot();

        final TextView textView = binding.textCatalogo;
        catalogoViewModel.getText().observe(getViewLifecycleOwner(), textView::setText);
        return root;
    }

    @Override
    public void onDestroyView() {
        super.onDestroyView();
        binding = null;
    }
}

package com.example.devmobile;

import androidx.lifecycle.LiveData;
import androidx.lifecycle.MutableLiveData;
import androidx.lifecycle.ViewModel;

public class SharedViewModel extends ViewModel {
    private final MutableLiveData<String> selectedItem = new MutableLiveData<String>();
    public void selectItem(String item) {
        selectedItem.setValue(item);
    }
    public LiveData<String> getSelectedItem() {
        return selectedItem;
    }

}