Flutter开发日常练习-pageview滑动视图动画

养小猫咪的伙伴来我的店铺逛逛吧!抖音商城搜索#早睡早起的猫咪小铺子

 学着写一下滑动页面

 pageview实现左右滑动视图

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

  @override
  State createState() => _SlidingContainerState();
}

class _SlidingContainerState extends State {
  late PageController pageController;
  double pageOffset = 0;
  @override
  void initState() {
    // TODO: implement initState
    super.initState();
    pageController = PageController(viewportFraction: 0.84);
    pageController.addListener(() {
      setState(() => pageOffset = pageController.page!);
    });
  }

  @override
  void dispose() {
    // TODO: implement dispose
    super.dispose();
  }

  Widget build(BuildContext context) {
    return SizedBox(
      height: MediaQuery.of(context).size.height * 0.55,
      child: PageView(
        controller: pageController,
        children: List.generate(movies.length, (index) {
          return SlidingCard(
            offset: pageOffset - index,
            movie: movies[index],
          );
        }),
      ),
    );
  }
}

运用Card来绘制图层,简单又方便

class SlidingCard extends StatelessWidget {
  final double offset;
  final Movie movie;
  const SlidingCard({super.key, required this.offset, required this.movie});

  @override
  Widget build(BuildContext context) {
    double gauss = math.exp(-(math.pow((offset.abs() - 0.5), 2) / 0.08));
    return Transform.translate(
      offset: Offset(-32 * gauss * offset.sign, 0),
      child: Card(
        margin: EdgeInsets.only(left: 8, right: 8, bottom: 8),
        elevation: 8,
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(32),
        ),
        child: Column(
          children: [
            ClipRRect(
              borderRadius: BorderRadius.vertical(
                top: Radius.circular(32),
              ),
              child: Image.asset(
                
                '${movie.pic}',
                // height: MediaQuery.of(context).size.height * 0.3,
                alignment: Alignment(-offset.abs(), 0),
                fit: BoxFit.cover,
              ),
            ),
            SizedBox(
              height: 8,
            ),
            Expanded(
              child: Padding(
                padding: const EdgeInsets.all(8.0),
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    Text(
                      '${movie.name}',
                      style:
                          TextStyle(fontSize: 20, fontWeight: FontWeight.bold),
                    ),
                    SizedBox(
                      height: 10,
                    ),
                    Text(
                      '上架时间: ${movie.date}',
                      style: TextStyle(
                          fontSize: 14, fontWeight: FontWeight.normal),
                    ),
                    Text(
                      '${movie.intor}',
                      style: TextStyle(
                        fontSize: 14,
                        fontWeight: FontWeight.normal,
                      ),
                    ),
                    Spacer(),
                    Row(
                      children: [
                        SizedBox(width: 16,),
                        Text(
                          '${movie.price}',
                          style: TextStyle(
                              fontSize: 18, fontWeight: FontWeight.bold),
                        ),
                        Spacer(),
                        MaterialButton(
                          onPressed: () {},
                          color: Colors.black,
                          child: Text('购买'),
                          textColor: Colors.white,
                          shape: RoundedRectangleBorder(
                            borderRadius: BorderRadius.circular(32),
                          ),
                        ),
                        SizedBox(width: 16,),
                      ],
                    ),
                  ],
                ),
              ),
            ),
          ],
        ),
      ),
    );
  }
}

class $ {}