如何在椭圆形或圆形上裁剪UIImage？

问题描述

请提供有关如何在椭圆形或圆形上裁剪 UIImage 的建议。请指导我。

Please give ideas for how to crop UIImage on oval shape or circle shape. Please guide me.

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，它将变得更加圆整。

by increasing radius it will become more round-able.

只要图像是正方形，您可以通过将角宽度的一半作为角半径来获得完美的圆形：

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];

您还需要添加

[imageView.layer setMasksToBounds:YES];

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