Flutter PageView 实现图片滑动展示-优快云博客

这篇博客展示了如何使用Flutter的PageView组件创建一个水平滚动的图片展示页面。每个页面包含一个中心对齐的文本，用户可以通过滑动查看不同颜色背景的页面，如蓝色、红色和绿色。PageView控制器设置了viewportFraction为0.9，使得图片显示更加完整，两侧留有部分间隙，提供更好的用户体验。

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分页显示内容，图片先显示一个，通过controller: PageController(viewportFraction: 0.9),两边可以显示其他图片的边，可以左右划动来查看其他图片。

// Flutter code sample for PageView
//
// Here is an example of [PageView]. It creates a centered [Text] in each of the three pages
// which scroll horizontally.

import 'package:flutter/material.dart';

void main() => runApp(const MyApp());

/// This is the main application widget.
class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  static const String _title = 'Flutter Code Sample';

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: _title,
      home: Scaffold(
        appBar: AppBar(title: const Text(_title)),
        body: const MyStatelessWidget(),
      ),
    );
  }
}

/// This is the stateless widget that the main application instantiates.
class MyStatelessWidget extends StatelessWidget {
  const MyStatelessWidget({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    final PageController controller = PageController(initialPage: 0);
    return PageView(
      /// [PageView.scrollDirection] defaults to [Axis.horizontal].
      /// Use [Axis.vertical] to scroll vertically.
      scrollDirection: Axis.horizontal,
      controller: PageController(viewportFraction: 0.9),
      children: <Widget>[
        Container(
          color: Colors.blue,
          child: Center(
            child: Text('First Page'),
          ),
        ),
        Container(
          color: Colors.red,
          child: Center(
            child: Text('Second Page'),
          ),
        ),
        Container(
          color: Colors.green,
          child: Center(
            child: Text('Third Page'),
          ),
        ),
      ],
    );
  }
}