NSAttributedString文本属性设置的使用

使用NSAttributedString进行文本属性的设置。

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

NSMutableAttributedString *textFont = [[NSMutableAttributedString alloc] initWithString:@"NSAttributedString设置字体大小"];
[textFont addAttribute:NSFontAttributeName
                 value:[UIFont boldSystemFontOfSize:18.0]
                 range:[@"NSAttributedString设置字体大小" rangeOfString:@"NSAttributedString"]];

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

NSMutableParagraphStyle *rowParagraph = [[NSMutableParagraphStyle alloc] init];
rowParagraph.firstLineHeadIndent = 20;
rowParagraph.lineSpacing = 10;
NSMutableAttributedString *textRowSpace = [[NSMutableAttributedString alloc] initWithString:@"NSAttributedString设置字体文字间距"];
    [textRowSpace addAttribute:NSParagraphStyleAttributeName value:rowParagraph range:NSMakeRange(0, textRowSpace.string.length)];

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

NSMutableAttributedString *textColor = [[NSMutableAttributedString alloc] initWithString:@"NSAttributedString设置字体颜色"];
[textColor addAttribute:NSForegroundColorAttributeName
                  value:[UIColor greenColor]
                  range:[@"NSAttributedString设置字体颜色" rangeOfString:@"NSAttributedString"]];

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
NSBackgroundColorAttributeName

NSMutableAttributedString *textBackColor = [[NSMutableAttributedString alloc] initWithString:@"NSAttributedString设置字体背景颜色"];
[textBackColor addAttribute:NSBackgroundColorAttributeName
                      value:[UIColor yellowColor]
                      range:[@"NSAttributedString设置字体背景颜色" rangeOfString:@"NSAttributedString"]];

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
NSLigatureAttributeName

设置字符间距，取值为 NSNumber 对象（整数），正值间距加宽，负值间距变窄
NSKernAttributeName

NSMutableAttributedString *textSizeSpace = [[NSMutableAttributedString alloc] initWithString:@"NSAttributedString设置字体文字间距"];
[textSizeSpace addAttribute:NSKernAttributeName
                      value:@(2)
                      range:[@"NSAttributedString设置字体文字间距" rangeOfString:@"NSAttributedString"]];

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

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

NSMutableAttributedString *textDeleteline = [[NSMutableAttributedString alloc] initWithString:@"NSAttributedString设置删除线"];
[textDeleteline addAttribute:NSStrikethroughStyleAttributeName
                       value:@(NSUnderlineStyleSingle)
                       range:[@"NSAttributedString设置删除线" rangeOfString:@"NSAttributedString"]];
[textDeleteline addAttribute:NSStrikethroughColorAttributeName
                       value:[UIColor blueColor]
                       range:[@"NSAttributedString设置删除线" rangeOfString:@"NSAttributedString"]];

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
NSUnderlineStyleAttributeName

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

NSMutableAttributedString *textUnderline = [[NSMutableAttributedString alloc] initWithString:@"NSAttributedString设置下划线"];
[textUnderline addAttribute:NSUnderlineStyleAttributeName
                      value:@(NSUnderlineStyleSingle)
                      range:[@"NSAttributedString设置下划线" rangeOfString:@"NSAttributedString"]];
[textUnderline addAttribute:NSUnderlineColorAttributeName
                      value:[UIColor brownColor]
                      range:[@"NSAttributedString设置下划线" rangeOfString:@"NSAttributedString"]];

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

NSMutableAttributedString *textBorderType = [[NSMutableAttributedString alloc] initWithString:@"NSAttributedString设置字体笔画样式"];
[textBorderType addAttribute:NSStrokeWidthAttributeName
                       value:@(2)
                       range:[@"NSAttributedString设置字体笔画样式" rangeOfString:@"NSAttributedString"]];

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

NSMutableAttributedString *textBorderColor = [[NSMutableAttributedString alloc] initWithString:@"NSAttributedString设置字体笔画颜色"];
[textBorderColor addAttribute:NSStrokeColorAttributeName
                        value:[UIColor greenColor]
                        range:[@"NSAttributedString设置字体笔画颜色" rangeOfString:@"NSAttributedString"]];

设置阴影属性，取值为 NSShadow 对象
NSShadowAttributeName

// 设置字体阴影 模糊度shadowBlurRadius 阴影颜色shadowColor 阴影偏移shadowOffset
NSShadow *shadow = [[NSShadow alloc] init];
shadow.shadowBlurRadius = 1;
shadow.shadowColor = [UIColor purpleColor];
shadow.shadowOffset = CGSizeMake(3, 3);
//
NSMutableAttributedString *textShadow = [[NSMutableAttributedString alloc] initWithString:@"NSAttributedString设置字体阴影"];
[textShadow addAttribute:NSShadowAttributeName
                   value:shadow
                   range:[@"NSAttributedString设置字体阴影" rangeOfString:@"NSAttributedString"]];

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
NSTextEffectAttributeName

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

NSMutableAttributedString *textOffset = [[NSMutableAttributedString alloc] initWithString:@"NSAttributedString调整基线位置"];
[textOffset addAttribute:NSBaselineOffsetAttributeName
                   value:@(6)
                   range:[@"NSAttributedString调整基线位置" rangeOfString:@"NSAttributedString"]];

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

NSMutableAttributedString *textObliqueness = [[NSMutableAttributedString alloc] initWithString:@"NSAttributedString设置文本斜体"];
[textObliqueness addAttribute:NSObliquenessAttributeName
                        value:@(0.5)
                        range:[@"NSAttributedString设置文本斜体" rangeOfString:@"NSAttributedString"]];

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
NSExpansionAttributeName

NSMutableAttributedString *textExpansion = [[NSMutableAttributedString alloc] initWithString:@"NSAttributedString设置文本压缩"];
[textExpansion addAttribute:NSExpansionAttributeName
                      value:@(0.5)
                      range:[@"NSAttributedString设置文本压缩" rangeOfString:@"NSAttributedString"]];

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

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
NSVerticalGlyphFormAttributeName

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

NSMutableAttributedString *textLink = [[NSMutableAttributedString alloc] initWithString:@"NSAttributedString设置超链接"];
[textLink addAttribute:NSLinkAttributeName
                 value:[NSURL URLWithString:@"http://www.baidu.com"]
                 range:[@"NSAttributedString设置超链接" rangeOfString:@"NSAttributedString"]];

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

// 设置图文混排
// 初始化一个图文对象
NSTextAttachment *attachmentImage = [[NSTextAttachment alloc] init];
attachmentImage.image = [UIImage imageNamed:@"image"];
attachmentImage.bounds = CGRectMake(0, 0, 20.0, 20.0);
NSAttributedString *attributedImage = [NSAttributedString attributedStringWithAttachment:attachmentImage];
//
NSMutableAttributedString *textImage = [[NSMutableAttributedString alloc] initWithString:@"NSAttributedString图文混排"];
[textImage insertAttributedString:attributedImage atIndex:[@"NSAttributedString图文混排" rangeOfString:@"NSAttributedString"].length];