使用Fragment实现主页面，在该页面中使用RecyclerView显示书名列表

好的，下面是实现的步骤：

1. 创建一个Fragment类，命名为BookListFragment，并在其中创建RecyclerView。

public class BookListFragment extends Fragment {

    private RecyclerView mRecyclerView;
    private BookListAdapter mAdapter;

    public BookListFragment() {
        // Required empty public constructor
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        View view = inflater.inflate(R.layout.fragment_book_list, container, false);

        // 初始化RecyclerView
        mRecyclerView = view.findViewById(R.id.recyclerview);
        mRecyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
        mAdapter = new BookListAdapter(getActivity(), getBookList());
        mRecyclerView.setAdapter(mAdapter);

        return view;
    }

    // 模拟数据，返回书名列表
    private List<String> getBookList() {
        List<String> list = new ArrayList<>();
        list.add("Java编程思想");
        list.add("Effective Java");
        list.add("Android编程权威指南");
        list.add("Kotlin实战");
        return list;
    }
}

2. 创建一个RecyclerView的布局文件，命名为fragment_book_list.xml。

<androidx.recyclerview.widget.RecyclerView
    android:id="@+id/recyclerview"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

3. 创建一个BookListAdapter类，继承自RecyclerView.Adapter，并实现ViewHolder。

public class BookListAdapter extends RecyclerView.Adapter<BookListAdapter.ViewHolder> {

    private Context mContext;
    private List<String> mBookList;

    public BookListAdapter(Context context, List<String> bookList) {
        mContext = context;
        mBookList = bookList;
    }

    @NonNull
    @Override
    public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(mContext).inflate(R.layout.item_book, parent, false);
        ViewHolder holder = new ViewHolder(view);
        return holder;
    }

    @Override
    public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
        String bookName = mBookList.get(position);
        holder.mTextView.setText(bookName);
    }

    @Override
    public int getItemCount() {
        return mBookList.size();
    }

    public static class ViewHolder extends RecyclerView.ViewHolder {

        private TextView mTextView;

        public ViewHolder(@NonNull View itemView) {
            super(itemView);
            mTextView = itemView.findViewById(R.id.tv_book_name);
        }
    }
}

4. 创建RecyclerView的item布局文件，命名为item_book.xml。

<TextView
    android:id="@+id/tv_book_name"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:padding="16dp"
    android:textSize="18sp" />

5. 在MainActivity中，使用FragmentManager将BookListFragment添加到主页面中。

public class MainActivity extends AppCompatActivity {

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

        // 将BookListFragment添加到主页面中
        FragmentManager fm = getSupportFragmentManager();
        FragmentTransaction transaction = fm.beginTransaction();
        BookListFragment fragment = new BookListFragment();
        transaction.add(R.id.fragment_container, fragment);
        transaction.commit();
    }
}

6. 最后，在主页面的布局文件中添加一个FrameLayout，用于显示BookListFragment。

<FrameLayout
    android:id="@+id/fragment_container"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

至此，我们就完成了使用Fragment在主页面中显示RecyclerView的书名列表。