flutter开发Pageview实现swiper效果

late PageController _controller;

@override

void initState() {

    super.initState();

  _controller = PageController(initialPage: 1, viewportFraction: 0.75);

}

_diaryPageViewBuilder(){

  return Container( height: 240,

      child: PageView(

      controller: _controller, children: <Widget>[

        _itemCard(0), _itemCard(1), _itemCard(2), _itemCard(3)

      ]));

}

_itemCard(int i) {

  return Container(

    margin: EdgeInsets.symmetric(horizontal: 10.r),

    color: Colors.red,

    child: Text('$i'),

  );

}