区间进度条、Step-by-step progress

https://github.com/minjoongkim/MJProgressView

    self.mlProgress.setProgressAnimation((firstProgress ?? 0) / (maxProgress ?? 0))
            self.mlProgress.setProgressAnimation((secondProgress ?? 0) / (maxProgress ?? 0) )
            
              mlProgress = MJProgressView.init(frame: CGRect(x: 20, y: 0, width: kScreenWidth - 34 - 42, height: 3), progressCount: 2, color: [ColorConst.color_df,UIColor.hexStringColor(hex: "#4C4A66")])
        contentView.addSubview(mlProgress)
        
        https://github.com/yonat/StepProgressView