如何快速制作不同形状的影像

我想改变正常的ios imageview到这个下面的图像形状（像弧）

Answer 1

您可以根据需要使用它来devise形状，您可以在path中添加额外的行，以便修改贝塞尔path。 创build一个自定义UIImageView类，并将故事板中的图像视图子类化为您的自定义类。

import UIKit class customImageView: UIImageView { // Only override drawRect: if you perform custom drawing. // An empty implementation adversely affects performance during animation. // override func drawRect(rect: CGRect) // { // // // } override func setNeedsLayout() { let path = UIBezierPath() path.moveToPoint(CGPoint(x: self.frame.size.width/2, y: self.frame.size.height)) path.addLineToPoint(CGPoint(x: self.frame.size.width, y: self.frame.size.height/2)) path.addLineToPoint(CGPoint(x: self.frame.size.width/2, y: 0)) path.addArcWithCenter(CGPoint(x: self.frame.size.width/2, y: self.frame.size.height/2), radius: self.frame.size.width/2, startAngle:-CGFloat(M_PI_2), endAngle: CGFloat(M_PI_2), clockwise: false) path.moveToPoint(CGPoint(x: self.frame.size.width/2, y: self.frame.size.height)) path.closePath() UIColor.redColor().setFill() path.stroke() path.bezierPathByReversingPath() let shapeLayer = CAShapeLayer() shapeLayer.frame = self.bounds shapeLayer.path = path.CGPath shapeLayer.fillColor = UIColor.redColor().CGColor self.layer.mask = shapeLayer; self.layer.masksToBounds = true; } } 

如果你想通过代码添加图像，请像这样使用它

  func shapeImage() { let customImgView = customImageView() customImgView.image = UIImage(named: "Image") customImgView.frame = CGRectMake(0, 0, 250, 250) self.view.addSubview(customImgView) } 

这是左侧的实际图像和根据您在右侧模拟器中的要求进行整形后的图像