本文介绍了CATextLayer包装了sizeToFit吗?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

如果我设置 textLayer.wrapped =是,如何调整 textLayer 的大小以包含换行文本?即,如何获得 textLayer 的新高度?

If I set textLayer.wrapped = YES, how do I resize textLayer to contain the wrapped text? I.e., how do I get the new height of the textLayer?

基本上,我想要类似-[UILabel sizeToFit]

推荐答案

您需要做的第一件事就是获取

The first thing you need to do is get the size of the text.

非常感谢提供了一种方法来做到这一点:

Thankfully, the NSString UIKit Additions Reference offers a method to do exactly that:

- (CGSize)sizeWithFont:(UIFont *)font constrainedToSize:(CGSize)size lineBreakMode:(UILineBreakMode)lineBreakMode

这将为您提供 CGSize ,然后您可以使用它来设置 UILabel 的框架或您正在使用的 UIView 的任何子类。

That will give you a CGSize that you can then use to set the frame of your UILabel or whatever subclass of UIView that you're using.

因此,假设 textLayer UILabel -而不是 CALayer -您最终会得到一些回报像这样:

So, assuming textLayer is a UILabel - rather than a CALayer - you'll end up with something like this:

UIFont *myFont = [UIFont boldSystemFontOfSize:12.0f];
CGSize myFontSize = [myString sizeWithFont:myFont];
myLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, myFontSize.width, myFontSize.height)];
myLabel.text = newTitle;
myLabel.font = myFont;

这篇关于CATextLayer包装了sizeToFit吗?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!

07-16 18:32