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跟版网！