android中的inflater.inflate()里边的几个参数是什么意思?还有container是怎么被传入的?API看的迷迷糊糊的,还请高人指点一下啊

[平凡的L同学]

 @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View rootView=inflater.inflate(R.layout.fragment_main,container,false);
        if (book!=null){
            ((TextView)rootView.findViewById(R.id.book_title)).setText(book.title);
            ((TextView)rootView.findViewById(R.id.book_desc)).setText(book.desc);
        }
        return rootView;
    }

[平凡的L同学]

public class MainActivityFragment extends Fragment {
    public static final String ITEM_ID="item_id";
    BookContent.Book book;

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if (getArguments().containsKey(ITEM_ID)){//activity启动的时候会给Fragment一个信号
            book=BookContent.ITEM_MAP.get(getArguments().getInt(ITEM_ID));
        }
    }


    public MainActivityFragment() {
    }
    //该方法将返回的View作为Fragment显示组件
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        View rootView=inflater.inflate(R.layout.fragment_main,container,false);
        if (book!=null){
            ((TextView)rootView.findViewById(R.id.book_title)).setText(book.title);
            ((TextView)rootView.findViewById(R.id.book_desc)).setText(book.desc);
        }
        return rootView;
    }
}

这是所有的源码