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
- (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) lineBreakModeHowever, 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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如何在boundingRectWithSize中指定NSLineBreakMode?
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