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

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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