色彩炫丽的进度条

源码KDCircularProgress，KDCircularProgress是使用swift制作的色彩炫丽的进度条，可以加入多种颜色来控制进度条的渐变效果。使用方法： 用法相当简单： let progress = KDCircularProgress(frame: CGRect(x: 0, y: 0, width: 300, height: 300)) progress.startAngle = -90 progress.progressThickness = 0.2 progress.trackThickness = 0.7 progress.clockwise = true progress.center = view.center progress.gradientRotateSpeed = 2 progress.roundedCorners = true progress.glowMode = .Forward progress.angle = 300 progress.setColors(UIColor.cyanColor() ,UIColor.whiteColor(), UIColor.magentaColor()) view.addSubview(progress) 请参考Demo.