有没有可能像flutter Pageview中的Instagram stories一样，在右边添加一个点击来前进，点击左边来后退？

import 'package:flutter/material.dart';

class InstagramStoriesPageView extends StatefulWidget {
  @override
  _InstagramStoriesPageViewState createState() =>
      _InstagramStoriesPageViewState();
}

class _InstagramStoriesPageViewState extends State<InstagramStoriesPageView> {
  PageController _pageController;
  int _currentPage = 0;

  @override
  void initState() {
    super.initState();
    _pageController = PageController(initialPage: _currentPage);
  }

  @override
  void dispose() {
    _pageController.dispose();
    super.dispose();
  }

  void _goToNextPage() {
    if (_currentPage < _pageController.pageCount - 1) {
      _pageController.nextPage(
        duration: Duration(milliseconds: 300),
        curve: Curves.easeInOut,
      );
    }
  }

  void _goToPreviousPage() {
    if (_currentPage > 0) {
      _pageController.previousPage(
        duration: Duration(milliseconds: 300),
        curve: Curves.easeInOut,
      );
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Instagram Stories'),
      ),
      body: Stack(
        children: [
          PageView(
            controller: _pageController,
            onPageChanged: (index) {
              setState(() {
                _currentPage = index;
              });
            },
            children: [
              // Add your pages here
              Container(color: Colors.blue),
              Container(color: Colors.red),
              Container(color: Colors.green),
            ],
          ),
          Positioned(
            top: 0,
            bottom: 0,
            left: 0,
            child: GestureDetector(
              onTap: _goToPreviousPage,
              child: Container(
                width: MediaQuery.of(context).size.width / 2,
                color: Colors.transparent,
              ),
            ),
          ),
          Positioned(
            top: 0,
            bottom: 0,
            right: 0,
            child: GestureDetector(
              onTap: _goToNextPage,
              child: Container(
                width: MediaQuery.of(context).size.width / 2,
                color: Colors.transparent,
              ),
            ),
          ),
        ],
      ),
    );
  }
}