如何根据文本长度计算UILabel宽度？ [英] How to calculate UILabel width based on text length?

问题描述

我想在UILabel旁边显示一个图像，但UILabel有可变的文本长度，所以我不知道放置图像的位置。如何实现这个？

I want to display an image next to a UILabel, however UILabel has variable text length, so I don't know where to place the image. How can I accomplish this?

推荐答案

CGSize expectedLabelSize = [yourString sizeWithFont:yourLabel.font 
                        constrainedToSize:maximumLabelSize 
                        lineBreakMode:yourLabel.lineBreakMode]; 

What is -[NSString sizeWithFont:forWidth:lineBreakMode:] good for?

这个问题可能有你的答案，它为我工作。

this question might have your answer, it worked for me.

2014年，我编辑了这个新版本，基于诺贝尔下面！这做的一切。欢呼

For 2014, I edited in this new version, based on the ultra-handy comment by Norbert below! This does everything. Cheers

// yourLabel is your UILabel.

float widthIs = 
 [self.yourLabel.text
  boundingRectWithSize:self.yourLabel.frame.size                                           
  options:NSStringDrawingUsesLineFragmentOrigin
  attributes:@{ NSFontAttributeName:self.yourLabel.font }
  context:nil]
   .size.width;

NSLog(@"the width of yourLabel is %f", widthIs);

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