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第2月第24天 coretext 行高
1.NSMutableAttributedString 行高
NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:labelText]; NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init]; [paragraphStyle setLineSpacing:LINESPACE];//调整行间距 [attributedString addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:NSMakeRange(0, [labelText length])]; label.attributedText = attributedString;
http://blog.sina.com.cn/s/blog_9256a1210101ku7o.html
2.boundingRectWithSize 行高
#define UILABEL_LINE_SPACE 6#define HEIGHT [ [ UIScreen mainScreen ] bounds ].size.height//给UILabel设置行间距和字间距-(void)setLabelSpace:(UILabel*)label withValue:(NSString*)str withFont:(UIFont*)font { NSMutableParagraphStyle *paraStyle = [[NSMutableParagraphStyle alloc] init]; paraStyle.lineBreakMode = NSLineBreakByCharWrapping; paraStyle.alignment = NSTextAlignmentLeft; paraStyle.lineSpacing = UILABEL_LINE_SPACE; //设置行间距 paraStyle.hyphenationFactor = 1.0; paraStyle.firstLineHeadIndent = 0.0; paraStyle.paragraphSpacingBefore = 0.0; paraStyle.headIndent = 0; paraStyle.tailIndent = 0; //设置字间距 NSKernAttributeName:@1.5f NSDictionary *dic = @{NSFontAttributeName:font, NSParagraphStyleAttributeName:paraStyle, NSKernAttributeName:@1.5f}; NSAttributedString *attributeStr = [[NSAttributedString alloc] initWithString:str attributes:dic]; label.attributedText = attributeStr;}//计算UILabel的高度(带有行间距的情况)-(CGFloat)getSpaceLabelHeight:(NSString*)str withFont:(UIFont*)font withWidth:(CGFloat)width { NSMutableParagraphStyle *paraStyle = [[NSMutableParagraphStyle alloc] init]; paraStyle.lineBreakMode = NSLineBreakByCharWrapping; paraStyle.alignment = NSTextAlignmentLeft; paraStyle.lineSpacing = UILABEL_LINE_SPACE; paraStyle.hyphenationFactor = 1.0; paraStyle.firstLineHeadIndent = 0.0; paraStyle.paragraphSpacingBefore = 0.0; paraStyle.headIndent = 0; paraStyle.tailIndent = 0; NSDictionary *dic = @{NSFontAttributeName:font, NSParagraphStyleAttributeName:paraStyle, NSKernAttributeName:@1.5f}; CGSize size = [str boundingRectWithSize:CGSizeMake(width, HEIGHT) options:NSStringDrawingUsesLineFragmentOrigin attributes:dic context:nil].size; return size.height;}
http://blog.csdn.net/luco2008/article/details/50977718
3.CTFramesetterSuggestFrameSizeWithConstraints 行高
1)CFMutableAttributedStringRef/NSAttributedString
2)CTParagraphStyleRef/NSMutableParagraphStyle
http://blog.sina.com.cn/s/blog_6308b98c0101byh9.html
4.yytext
http://www.cnblogs.com/lujianwenance/p/5716804.html
5.nsattributedstring 转nsstring
6.UILabel和Scrollview结合用，label高度自适应
https://my.oschina.net/langzhouzhou1/blog/648748
第2月第24天 coretext 行高
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