如何使按钮的角变圆

问题描述

我有一个矩形图像 (jpg)，想用它来填充 xcode 中圆角按钮的背景.

I have a rectangle image (jpg) and want to use it to fill the background of a button with rounded corner in xcode.

我写了以下内容:

UIButton *button = [[UIButton buttonWithType:UIButtonTypeRoundedRect] retain];
CGRect frame = CGRectMake(x, y, cardWidth, cardHeight);
button.frame = frame;
[button setBackgroundImage:backImage forState:UIControlStateNormal];

但是，我用这种方法得到的按钮没有圆角:它是一个普通的矩形，看起来与我的原始图像完全一样.我怎样才能得到一个圆角的图像来代表我的按钮?

However, the button I get with that approach doesn't have its corners rounded: it is instead a plain rectangle that looks exactly like my original image. How can I get instead an image with rounded corner to represent my button?

谢谢！

推荐答案

我用 UITextArea 尝试了以下解决方案，我希望这也适用于 UIButton.

I tried the following solution with the UITextArea and I expect this will work with UIButton as well.

首先在你的 .m 文件中导入这个 -

First of all import this in your .m file -

#import <QuartzCore/QuartzCore.h>

然后在您的 loadView 方法中添加以下行

and then in your loadView method add following lines

    yourButton.layer.cornerRadius = 10; // this value vary as per your desire
    yourButton.clipsToBounds = YES;

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