NSParagraphStyle的强大

// NSFontAttributeName                设置字体属性,默认值:字体:Helvetica(Neue) 字号:12

// NSForegroundColorAttributeNam      设置字体颜色,取值为 UIColor对象,默认值为黑色

// NSBackgroundColorAttributeName     设置字体所在区域背景颜色,取值为 UIColor对象,默认值为nil, 透明色

// NSLigatureAttributeName            设置连体属性,取值为NSNumber 对象(整数),0 表示没有连体字符,1 表示使用默认的连体字符

// NSKernAttributeName                设定字符间距,取值为 NSNumber 对象(整数),正值间距加宽,负值间距变窄

// NSStrikethroughStyleAttributeName  设置删除线,取值为 NSNumber 对象(整数)

// NSStrikethroughColorAttributeName  设置删除线颜色,取值为 UIColor 对象,默认值为黑色

// NSUnderlineStyleAttributeName      设置下划线,取值为 NSNumber 对象(整数),枚举常量 NSUnderlineStyle中的值,与删除线类似

// NSUnderlineColorAttributeName      设置下划线颜色,取值为 UIColor 对象,默认值为黑色

// NSStrokeWidthAttributeName         设置笔画宽度,取值为 NSNumber 对象(整数),负值填充效果,正值中空效果

// NSStrokeColorAttributeName         填充部分颜色,不是字体颜色,取值为 UIColor 对象

// NSShadowAttributeName              设置阴影属性,取值为 NSShadow 对象

// NSTextEffectAttributeName          设置文本特殊效果,取值为 NSString 对象,目前只有图版印刷效果可用:

// NSBaselineOffsetAttributeName      设置基线偏移值,取值为 NSNumber (float),正值上偏,负值下偏

// NSObliquenessAttributeName         设置字形倾斜度,取值为 NSNumber (float),正值右倾,负值左倾

// NSExpansionAttributeName           设置文本横向拉伸属性,取值为 NSNumber (float),正值横向拉伸文本,负值横向压缩文本

// NSWritingDirectionAttributeName    设置文字书写方向,从左向右书写或者从右向左书写

// NSVerticalGlyphFormAttributeName   设置文字排版方向,取值为 NSNumber 对象(整数),0 表示横排文本,1 表示竖排文本

// NSLinkAttributeName                设置链接属性,点击后调用浏览器打开指定URL地址

// NSAttachmentAttributeName          设置文本附件,取值为NSTextAttachment对象,常用于文字图片混排

// NSParagraphStyleAttributeName      设置文本段落排版格式,取值为 NSParagraphStyle 对象

//   NSParagraphStyleAttributeName 段落的风格(设置首行,行间距,对齐方式什么的)看自己需要什么属性,写什么

NSMutableParagraphStyle*paragraphStyle = [[NSMutableParagraphStylealloc]init];

paragraphStyle.lineSpacing=10;// 字体的行间距

paragraphStyle.firstLineHeadIndent=20.0f;//首行缩进

paragraphStyle.alignment= NSTextAlignmentJustified;//(两端对齐的)文本对齐方式:(左,中,右,两端对齐,自然)

paragraphStyle.lineBreakMode= NSLineBreakByTruncatingTail;//结尾部分的内容以……方式省略 ( "...wxyz" ,"abcd..." ,"ab...yz")

paragraphStyle.headIndent=20;//整体缩进(首行除外)

paragraphStyle.tailIndent=20;//

paragraphStyle.minimumLineHeight=10;//最低行高

paragraphStyle.maximumLineHeight=20;//最大行高

paragraphStyle.paragraphSpacing=15;//段与段之间的间距

paragraphStyle.paragraphSpacingBefore=22.0f;//段首行空白空间/* Distance between the bottom of the previous paragraph (or the end of its paragraphSpacing, if any)

and the top of this paragraph. */

paragraphStyle.baseWritingDirection= NSWritingDirectionLeftToRight;//从左到右的书写方向(一共➡️三种)

paragraphStyle.lineHeightMultiple=15;/* Natural line height is multiplied by this factor (if positive)

before being constrained by minimum and maximum line height. */

paragraphStyle.hyphenationFactor=1;//连字属性 在iOS,唯一支持的值分别为0和1

_descAtt = [[NSMutableAttributedStringalloc]initWithString:_model.desc];

UIFont*descFont = [UIFontPingFangSC_Regular_WithSize:12];

NSMutableParagraphStyle*descStyle = [[NSMutableParagraphStylealloc]init];

[descStylesetLineSpacing:1];//行间距

CGSize descSize = [_model.descboundingRectWithSize:CGSizeMake(w, MAXFLOAT)

options:NSStringDrawingUsesLineFragmentOrigin

attributes:@{NSFontAttributeName:descFont,

NSParagraphStyleAttributeName :descStyle}

context:nil].size;

#define UILABEL_LINE_SPACE6

#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 = [[NSMutableParagraphStylealloc]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 = [[NSAttributedStringalloc]initWithString:strattributes: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 = [[NSMutableParagraphStylealloc]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

};

CGSizesize = [strboundingRectWithSize:CGSizeMake(width,HEIGHT)options:NSStringDrawingUsesLineFragmentOriginattributes:diccontext:nil].size;

returnsize.height;

}

推荐阅读更多精彩内容