如何在椭圆形或圆形上裁剪 UIImage?

How to crop UIImage on oval shape or circle shape?(如何在椭圆形或圆形上裁剪 UIImage?)

问题描述

请给出如何在椭圆形或圆形上裁剪 UIImage 的想法.请分享您的想法.

Please give ideas for how to crop UIImage on oval shape or circle shape. Please share your ideas.

推荐答案

#import <QuartzCore/QuartzCore.h>

CALayer *imageLayer = YourImageview.layer;
        [imageLayer setCornerRadius:5];
        [imageLayer setBorderWidth:1];
        [imageLayer setMasksToBounds:YES];

通过增加半径，它会变得更圆.

by increasing radius it will become more round-able.

只要图片是正方形，取一半宽度作为圆角半径就可以得到一个正圆:

As long as the image is a square, you can get a perfect circle by taking half the width as the corner radius:

[imageView.layer setCornerRadius:imageView.frame.size.width/2]; 

你还需要添加

[imageView.layer setMasksToBounds:YES];

斯威夫特 4.2

import QuartzCore

var imageLayer: CALayer? = YourImageview.layer
imageLayer?.cornerRadius = 5
imageLayer?.borderWidth = 1
imageLayer?.masksToBounds = true

这篇关于如何在椭圆形或圆形上裁剪 UIImage?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持编程学习网！