RotatedBox 旋转盒

可容纳一个子组件，将其沿顺时针旋转quarterTurns*90°。

相关组件

RotationTransition

RotatedBox基本使用

   <br />【child】 : 孩子组件   【Widget】<br />【quarterTurns】 : 旋转多少个90°   【int】<br />![195.gif](https://cdn.nlark.com/yuque/0/2020/gif/326147/1589508681741-9372b749-5f82-45a2-9ceb-66a721cf330c.gif#align=left&display=inline&height=91&margin=%5Bobject%20Object%5D&name=195.gif&originHeight=91&originWidth=144&size=44416&status=done&style=none&width=144)

import 'package:flutter/material.dart';
class CustomRotatedBox extends StatefulWidget {
  @override
  _CustomRotatedBoxState createState() => _CustomRotatedBoxState();
}

class _CustomRotatedBoxState extends State<CustomRotatedBox> {
  int _quarterTurns = 0;

  @override
  Widget build(BuildContext context) {
    return RotatedBox(
      quarterTurns: _quarterTurns,
      child: GestureDetector(
          onTap: () => setState(() => _quarterTurns++),
          child: Icon(
            Icons.android,
            size: 60,
            color: Colors.blue,
          )),
    );
  }
}