FlutterUnit/lib/views/widgets/RenderObjectWidget/SingleChildRenderObjectWidget/anim/ScaleTransition.dart

import 'package:flutter/material.dart';

//    {
//      "widgetId": 91,
//      "name": 'ScaleTransition基本使用',
//      "priority": 1,
//      "subtitle":
//          "【child】 : 孩子组件   【Widget】\n"
//          "【scale】 : 动画   【Animation<double>】",
//    }
class CustomScaleTransition extends StatefulWidget {
  @override
  _CustomScaleTransitionState createState() => _CustomScaleTransitionState();
}

class _CustomScaleTransitionState extends State<CustomScaleTransition>
    with SingleTickerProviderStateMixin {
  AnimationController _ctrl;

  @override
  void initState() {
    _ctrl = AnimationController(vsync: this, duration: Duration(seconds: 2))
      ..addListener(() {
        print(_ctrl.value);
      });
    _ctrl.forward();
    super.initState();
  }

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

  @override
  Widget build(BuildContext context) {
    return GestureDetector(
        onTap: () {
          setState(() {
            _ctrl.reset();
            _ctrl.forward();
          });
        },
        child: Container(
          color: Colors.grey.withAlpha(22),
          width: 100,
          height: 100,
          child: ScaleTransition(
            scale: CurvedAnimation(parent: _ctrl, curve: Curves.linear),
            child: Icon(Icons.android, color: Colors.green, size: 60),
          ),
        ));
  }
}