• 可以使用约束框
• 这是示例代码。
• 这个例子中的JumpTo部分还不是很完美，我希望你能通过学习ScrollNotification来实现。

import 'package:flutter/material.dart';

class MyWidget extends StatefulWidget {
  const MyWidget({super.key});

  @override
  State<MyWidget> createState() => _MyWidgetState();
}

class _MyWidgetState extends State<MyWidget> {
  late ScrollController _controller;
  bool lock = false;
  @override
  void initState() {
    _controller = ScrollController();
    super.initState();
  }

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

  @override
  Widget build(BuildContext context) {
    var maxWidth = MediaQuery.of(context).size.width;
    var maxHeight = MediaQuery.of(context).size.height;

    return Scaffold(
      body: NotificationListener<ScrollNotification>(
        child: ListView.builder(
          controller: _controller,
          physics: ClampingScrollPhysics(),
          itemCount: 20,
          itemExtent: maxWidth,
          itemBuilder: (context, index) {
            return ConstrainedBox(
                constraints:
                    BoxConstraints(maxWidth: maxWidth, maxHeight: maxHeight),
                child: Image.network('https://picsum.photos/600'));
          },
          scrollDirection: Axis.horizontal,
        ),
        onNotification: (ScrollNotification notification) {
          if (notification is ScrollStartNotification) {
            lock = false;
          }
          if (notification is ScrollEndNotification &&
              !lock &&
              _controller.position.isScrollingNotifier.value &&
              _controller.position.hasPixels) {
            lock = true;
            var current = _controller.offset;
            var diffIndex = (current / maxWidth).floor();
            var isNext = ((current / maxWidth).toDouble() * 0.001) > 0.5;
            var nexPosition = 0.0;
            if (isNext) {
              nexPosition = (diffIndex + 1) * maxWidth;
            } else {
              nexPosition = diffIndex * maxWidth;
            }
            _controller.removeListener(() {});
            Future.delayed(Duration.zero, () {
              // _controller.jumpTo(nexPosition);
              _controller.animateTo(nexPosition,
                  duration: Duration(milliseconds: 400),
                  curve: Curves.fastOutSlowIn);
            }).whenComplete(() => _controller.addListener(() {}));
          }

          return lock;
        },
      ),
    );
  }
}