本文介绍了如何在boundingRectWithSize中指定NSLineBreakMode?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

  [text boundingRectWithSize:BOLIVIASize选项:NSStringDrawingUsesLineFragmentOrigin属性:@ {NSFontAttributeName:FONT} context:nil]; 

这是



<$ p的新替代品$ p> - (CGSize)sizeWithFont:(UIFont *)font constrainedToSize:(CGSize)size lineBreakMode:(NSLineBreakMode)lineBreakMode

但是,如何在boundingRectWithSize上指定lineBreakMode参数?

解决方案

使用 NSParagraphStyleAttributeName & NSParagraphStyle

  NSMutableParagraphStyle * paragraph = [[NSMutableParagraphStyle alloc] init] ; 
paragraph.lineBreakMode = NSLineBreakByWordWrapping; //例如。

CGSize size = [label.text boundingRectWithSize:constrainedSize选项:NSStringDrawingUsesLineFragmentOrigin属性:@ {NSFontAttributeName:label.font,NSParagraphStyleAttributeName:paragraph} context:nil] .size;


 [text boundingRectWithSize:BOLIVIASize options:NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName:FONT} context:nil];

That is the new replacement for

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

However, how do I specify the lineBreakMode parameter on boundingRectWithSize?

解决方案

use NSParagraphStyleAttributeName & NSParagraphStyle:

NSMutableParagraphStyle *paragraph = [[NSMutableParagraphStyle alloc] init];
paragraph.lineBreakMode = NSLineBreakByWordWrapping; //e.g.

CGSize size = [label.text boundingRectWithSize: constrainedSize options:NSStringDrawingUsesLineFragmentOrigin attributes: @{ NSFontAttributeName: label.font, NSParagraphStyleAttributeName: paragraph } context: nil].size;

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06-03 19:37