如何在 swift 中制作不同形状的图像视图
How to make imageview with different shape in swift
我想将正常的 ios 图像视图更改为下面的图像形状(如弧形)
您可以使用它来根据您的要求设计形状,您可以在路径中添加额外的线条以防您需要修改贝塞尔曲线路径。创建自定义 UIImageView class 并将情节提要中的图像视图子 class 到您的自定义 class.
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片,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)
}
左边是实际图片,右边是在模拟器中按照你的要求整形后的图片
我想将正常的 ios 图像视图更改为下面的图像形状(如弧形)
您可以使用它来根据您的要求设计形状,您可以在路径中添加额外的线条以防您需要修改贝塞尔曲线路径。创建自定义 UIImageView class 并将情节提要中的图像视图子 class 到您的自定义 class.
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片,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)
}
左边是实际图片,右边是在模拟器中按照你的要求整形后的图片