swift – 如何用CALayer创建一个圈子?

前端之家收集整理的这篇文章主要介绍了swift – 如何用CALayer创建一个圈子?前端之家小编觉得挺不错的,现在分享给大家,也给大家做个参考。
我有下面的代码测试,但是当我给它的约束,它变成一个小圆圈: @H_403_1@override func drawRect(rect: CGRect) { var path = UIBezierPath(ovalInRect: rect) fillColor.setFill() path.fill() //set up the width and height variables //for the horizontal stroke let plusHeight:CGFloat = 300.0 let plusWidth:CGFloat = 450.0 //create the path var plusPath = UIBezierPath() //set the path's line width to the height of the stroke plusPath.lineWidth = plusHeight //move the initial point of the path //to the start of the horizontal stroke plusPath.moveToPoint(CGPoint( x:self.bounds.width/2 - plusWidth/2 + 0.5,y:self.bounds.height/2 + 0.5)) //add a point to the path at the end of the stroke plusPath.addLineToPoint(CGPoint( x:self.bounds.width/2 + plusWidth/2 + 0.5,y:self.bounds.height/2 + 0.5)) }@H_301_2@
根据需要更改半径和fillColor.

猜你在找的Swift相关文章