原来没有找到合适的开源组件，就在 项目管理系统中使用的是webview网页加载， 后面发现charts这个开源框架

开源地址

https://github.com/danielgindi/Charts

修改Podfile文件加入

pod 'Charts'

在终端打开项目所在目录执行

pod install

在UiColor中扩展 加入随机颜色方法

extension UIColor{
//返回随机颜色
       open class var randomColor:UIColor{
           get
           {
               let red = CGFloat(arc4random()%256)/255.0
               let green = CGFloat(arc4random()%256)/255.0
               let blue = CGFloat(arc4random()%256)/255.0
               return UIColor(red: red, green: green, blue: blue, alpha: 1.0)
           }
       }
    

完整的报表展示类:

//
//  BugPieController.swift
//  butterflypm
//
//  Created by Hu Hu on 2022/5/21.
//  Copyright © 2022 Hu Hu. All rights reserved.
//

import Foundation
import UIKit
import Charts
class BugPieController:UIViewController,ChartViewDelegate{
    var months = ["项目管理系统", "代码生成器"]
    var unitsSold:[Double] = [30, 100]
       
       fileprivate lazy var pieChartView: PieChartView = {
           let pieChartView = PieChartView()
//           pieChartView.backgroundColor = UIColor.background
           //基本样式
           pieChartView.delegate = self
           return pieChartView
       }()
       override func viewDidLoad() {
           super.viewDidLoad()
           self.title = "pie chart"
           
           
           view.addSubview(pieChartView)
           pieChartView.snp.makeConstraints { (make) in
               make.left.equalTo(self.view).offset(5)
               make.top.equalTo(self.view).offset(64)
               make.right.equalTo(self.view).offset(-5)
               make.height.equalTo(300)
           }
           
           setChart(dataPoints:months,values:unitsSold);
   }
    
    func setChart(dataPoints: [String], values: [Double]) {
            var dataEntries: [ChartDataEntry] = []
            for i in 0..<dataPoints.count {
                let entry = PieChartDataEntry(value: values[i], label: "\(dataPoints[i])") //设置数据 title和对应的值
                
                dataEntries.append(entry)
            }
            
            
        let pichartDataSet = PieChartDataSet(entries: dataEntries, label: "年龄库示例") //设置表示
            //设置饼状图字体配置
            setPieChartDataSetConfig(pichartDataSet: pichartDataSet)
            
            
            let pieChartData = PieChartData(dataSet: pichartDataSet)
            //设置饼状图字体样式
            setPieChartDataConfig(pieChartData: pieChartData)
            pieChartView.data = pieChartData //将配置及数据添加到表中
            
            
            //设置饼状图样式
            setDrawHoleState()
            
            var colors: [UIColor] = []
            for _ in 0..<dataPoints.count {
                colors.append(UIColor.randomColor)
            }
            
            pichartDataSet.colors = colors//设置区块颜色
        }
    
    //设置饼状图字体配置
        func setPieChartDataSetConfig(pichartDataSet: PieChartDataSet){
            pichartDataSet.sliceSpace = 0 //相邻区块之间的间距
            pichartDataSet.selectionShift = 8 //选中区块时, 放大的半径
            pichartDataSet.xValuePosition = .insideSlice //名称位置
            pichartDataSet.yValuePosition = .outsideSlice //数据位置
            //数据与区块之间的用于指示的折线样式
            pichartDataSet.valueLinePart1OffsetPercentage = 0.85 //折线中第一段起始位置相对于区块的偏移量, 数值越大, 折线距离区块越远
            pichartDataSet.valueLinePart1Length = 0.5 //折线中第一段长度占比
            pichartDataSet.valueLinePart2Length = 0.4 //折线中第二段长度最大占比
            pichartDataSet.valueLineWidth = 1 //折线的粗细
            pichartDataSet.valueLineColor = UIColor.gray //折线颜色
            
            
        }
        
        //设置饼状图字体样式
        func setPieChartDataConfig(pieChartData: PieChartData){
            pieChartData.setValueFormatter(DigitValueFormatter())//设置百分比
            
            pieChartData.setValueTextColor(UIColor.gray) //字体颜色为白色
            pieChartData.setValueFont(UIFont.systemFont(ofSize: 10))//字体大小
        }
        
        
        //设置饼状图中心文本
        func setDrawHoleState(){
            ///饼状图距离边缘的间隙
            pieChartView.setExtraOffsets(left: 30, top: 0, right: 30, bottom: 0)
            //拖拽饼状图后是否有惯性效果
            pieChartView.dragDecelerationEnabled = true
            //是否显示区块文本
            pieChartView.drawSlicesUnderHoleEnabled = true
            //是否根据所提供的数据, 将显示数据转换为百分比格式
            pieChartView.usePercentValuesEnabled = true

            // 设置饼状图描述
            pieChartView.chartDescription?.text = "饼状年龄库图示例"
            pieChartView.chartDescription?.font = UIFont.systemFont(ofSize: 10)
            pieChartView.chartDescription?.textColor = UIColor.gray
            
            // 设置饼状图图例样式
            pieChartView.legend.maxSizePercent = 1 //图例在饼状图中的大小占比, 这会影响图例的宽高
            pieChartView.legend.formToTextSpace = 5 //文本间隔
            pieChartView.legend.font = UIFont.systemFont(ofSize: 10) //字体大小
            pieChartView.legend.textColor = UIColor.gray //字体颜色
            pieChartView.legend.verticalAlignment = .bottom //图例在饼状图中的位置
            pieChartView.legend.form = .circle //图示样式: 方形、线条、圆形
            pieChartView.legend.formSize = 12 //图示大小
            pieChartView.legend.orientation = .horizontal
            pieChartView.legend.horizontalAlignment = .center
            
    
            ////饼状图中心的富文本文本
            let attributes = [NSAttributedString.Key.font: UIFont.boldSystemFont(ofSize: CGFloat(15.0)), NSAttributedString.Key.foregroundColor: UIColor.gray]
            let centerTextAttribute = NSAttributedString(string: "平均库龄", attributes: attributes)
            pieChartView.centerAttributedText = centerTextAttribute



           
            
            pieChartView.setNeedsDisplay()


        }
    //点击空白地区
        func chartValueNothingSelected(_ chartView: ChartViewBase) {

        }
        //点击饼状图上的事件
        func chartValueSelected(_ chartView: ChartViewBase, entry: ChartDataEntry, highlight: Highlight) {
            let al = UIAlertController.init(title: nil, message: "点击的是：\(months[Int(highlight.x)])  值为： \(highlight.y)", preferredStyle: .alert)
            let cancel = UIAlertAction.init(title: "知道了", style: .cancel, handler: nil)
            al.addAction(cancel)
            self.present(al, animated: true, completion: nil)
        }
}
//        pieChartData.setValueFormatter(DigitValueFormatter() //设置百分比
//转化为带%
class DigitValueFormatter: NSObject, IValueFormatter {
    func stringForValue(_ value: Double, entry: ChartDataEntry, dataSetIndex: Int, viewPortHandler: ViewPortHandler?) -> String {
        let valueWithoutDecimalPart = String(format: "%.2f%%", value)
        return valueWithoutDecimalPart

    }
}