绘制：

import 'package:jade/utils/JadeColors.dart';
import 'package:flutter/material.dart';
import 'dart:math' as math;
import 'package:flutter_screenutil/flutter_screenutil.dart';

class ArcProgressBar extends StatefulWidget{
   
  const ArcProgressBar({
   Key key}) : super(key: key);
  @override
  State<StatefulWidget> createState() {
   
    // TODO: implement createState
    return _ArcProgressBar();
  }
}

class _ArcProgressBar extends State<ArcProgressBar> with TickerProviderStateMixin{
   

  AnimationController controller;

  @override
  void initState() {
   
    // TODO: implement initState
    super.initState();
    controller = AnimationController(duration:const Duration(seconds: 1),lowerBound:0,upperBound:60,vsync: this);
    controller.addListener(() {
   
      setState(() {
   
        //   print(controller.value);
      });
    });
    controller.forward();
  }

  @override
  void dispose() {
   
    // TODO: implement dispose
    controller.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
   
    // TODO: implement build
    return CustomPaint(
      painter: TestArcPainter(
          bgColor: JadeColors.lightGrey,
          sweepColor: Color(0xffFFC10F),
          strokeWidth: 45.0,
          progress: controller.value / 100