import 'package:flutter/material.dart';

class GuideScreen extends StatelessWidget {
  const GuideScreen({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Guide();
  }
}

class Guide extends StatefulWidget {
  const Guide({Key? key}) : super(key: key);

  @override
  _GuideScreenState createState() => _GuideScreenState();
}

class _GuideScreenState extends State<Guide>
    with SingleTickerProviderStateMixin {
  late AnimationController _controller;

  @override
  void initState() {
    super.initState();
    _controller = AnimationController(vsync: this);
  }

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

  @override
  Widget build(BuildContext context) {
    return Container(
      child: PageView.builder(
        itemBuilder: _pageItemBuilder,
        //当页面选中后回调此方法
        onPageChanged: (int index) {
          print("当前页面$index");
        },
        //值为flase时 显示第一个页面 然后从左向右开始滑动
        //值为true时 显示最后一个页面 然后从右向左开始滑动
        reverse: false,
        //滑动到页面底部无回弹效果
        physics: BouncingScrollPhysics(),
        //横向滑动切换
        scrollDirection: Axis.horizontal,
      ),
    );
  }

  Widget _pageItemBuilder(BuildContext context, int index) {
    return Stack();
  }
}