Flutter动画和运动控件之图片的大小变化AnimatedSize

最新推荐文章于 2024-05-22 23:29:33 发布

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最新推荐文章于 2024-05-22 23:29:33 发布 · 2k 阅读

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#图片的大小变化 #flutter图片的大小变化

这个示例展示了如何在Flutter中创建一个响应触摸的Container，当被触摸时， AnimatedSize widget内的FlutterLogo会进行动画大小变化，动画时间为1秒，曲线为EaseIn。

/// Flutter code sample for AnimatedSize

// This example makes a [Container] react to being touched, causing the child
// of the [AnimatedSize] widget, here a [FlutterLogo], to animate.

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 Center(
          child: MyStatefulWidget(),
        ),
      ),
    );
  }
}

/// This is the stateful widget that the main application instantiates.
class MyStatefulWidget extends StatefulWidget {
  const MyStatefulWidget({Key? key}) : super(key: key);

  @override
  _MyStatefulWidgetState createState() => _MyStatefulWid