iOS富文本(NSAttributedString)

富文本的所有属性

NSFontAttributeName  字号 UIFont 默认12
NSParagraphStyleAttributeName   段落样式    NSParagraphStyle
NSForegroundColorAttributeName  前景色 UIColor
NSBackgroundColorAttributeName  背景色 UIColor
NSObliquenessAttributeName  字体倾斜    NSNumber
NSExpansionAttributeName    字体加粗    NSNumber 比例 0就是不变 1增加一倍
NSKernAttributeName 字间距 CGFloat
NSUnderlineStyleAttributeName   下划线 1或0
NSUnderlineColorAttributeName   下划线颜色   UIColor
NSStrikethroughStyleAttributeName   删除线 1或0
NSStrikethroughColorAttributeName   删除线颜色   UIColor
NSStrokeColorAttributeName  same as ForegroundColor UIColor
NSStrokeWidthAttributeName  字体描边    CGFloat
NSLigatureAttributeName 连笔字 没看出效果   1或0
NSShadowAttributeName   阴影  NSShawdow
NSTextEffectAttributeName   设置文本特殊效果,目前只有图版印刷效果可用   NSString
NSAttachmentAttributeName   设置文本附件,常用插入图片   NSTextAttachment
NSLinkAttributeName 链接  NSURL (preferred) or NSString
NSBaselineOffsetAttributeName   基准线偏移   NSNumber
NSWritingDirectionAttributeName 文字方向 分别代表不同的文字出现方向等等，我想你一定用不到它 - -  @[@(1),@(2)]
NSVerticalGlyphFormAttributeName    水平或者竖直文本 在iOS没卵用，不支持竖版  1竖直 0水平

段落样式
段落样式主要改行距、段距、首行缩进、最大最小行高、多倍行距等十几个属性

    NSMutableParagraphStyle *muParagraph = [[NSMutableParagraphStyle alloc]init];
    muParagraph.lineSpacing = 10; // 行距
    muParagraph.paragraphSpacing = 20; // 段距
    muParagraph.firstLineHeadIndent = 30; // 首行缩进

阴影

    NSShadow *shadow = [[NSShadow alloc]init];
    shadow.shadowOffset = CGSizeMake(2, 2);
    shadow.shadowColor = [UIColor orangeColor];
    shadow.shadowBlurRadius = 1;

我的富文本代码，可以copy过去直接试

- (void)viewDidLoad {
    [super viewDidLoad];

    self.view.backgroundColor = [UIColor grayColor];
    [self.view addSubview:self.attTV];

    //NSFontAttributeName   字号 UIFont 默认12
    //NSParagraphStyleAttributeName    段落样式  NSParagraphStyle
    //NSForegroundColorAttributeName    前景色   UIColor
    //NSBackgroundColorAttributeName    背景色   UIColor
    //NSObliquenessAttributeName        字体倾斜     NSNumber
    //NSExpansionAttributeName          字体加粗     NSNumber  比例 0就是不变 1增加一倍
    //NSKernAttributeName               字间距   CGFloat
    //NSUnderlineStyleAttributeName     下划线     1或0
    //NSUnderlineColorAttributeName     下划线颜色
    //NSStrikethroughStyleAttributeName 删除线   1或0
    //NSStrikethroughColorAttributeName 某种颜色
    //NSStrokeColorAttributeName        same as ForegroundColor
    //NSStrokeWidthAttributeName        CGFloat
    //NSLigatureAttributeName           连笔字  1或0  没看出效果
    //NSShadowAttributeName             阴影    NSShawdow
    //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：
    //NSAttachmentAttributeName         NSTextAttachment  设置文本附件,常用插入图片
    //NSLinkAttributeName               链接  NSURL (preferred) or NSString
    //NSBaselineOffsetAttributeName     基准线偏移   NSNumber

    //NSWritingDirectionAttributeName   文字方向     @[@(1),@(2)]  分别代表不同的文字出现方向等等，我想你一定用不到它 - -
    //NSVerticalGlyphFormAttributeName  水平或者竖直文本  1竖直 0水平 在iOS没卵用，不支持竖版

    NSParagraphStyle *paragraph = [[NSParagraphStyle alloc]init];
    NSMutableParagraphStyle *muParagraph = [[NSMutableParagraphStyle alloc]init];
    muParagraph.lineSpacing = 10; // 行距
    muParagraph.paragraphSpacing = 20; // 段距
    muParagraph.firstLineHeadIndent = 30; // 首行缩进


    NSMutableAttributedString * attrStr = [[NSMutableAttributedString alloc] initWithData:[@"asdasdflhjlfsaiollzislooa" dataUsingEncoding:NSUnicodeStringEncoding] options:@{ NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType } documentAttributes:nil error:nil];


    NSRange range = NSMakeRange(0, attrStr.length);
    // 设置字体大小
    [attrStr addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:30] range:range];
    //字间距
    [attrStr addAttribute:NSKernAttributeName value:@(2) range:range];
    // 字体倾斜
    [attrStr addAttribute:NSObliquenessAttributeName value:@(1) range:range];
    // 字体加粗
    [attrStr addAttribute:NSExpansionAttributeName value:@(0.5) range:range];
    // 下划线
    [attrStr addAttribute:NSUnderlineStyleAttributeName value:@(1) range:range];
    [attrStr addAttribute:NSUnderlineColorAttributeName value:[UIColor blueColor] range:range];
    // 删除线
    [attrStr addAttribute:NSStrikethroughStyleAttributeName value:@(1) range:range];
    [attrStr addAttribute:NSStrikethroughColorAttributeName value:[UIColor greenColor] range:range];

    // 连体字
    [attrStr addAttribute:NSLigatureAttributeName value:@(1) range:range];


    // 设置颜色
    [attrStr addAttribute:NSForegroundColorAttributeName value:[UIColor colorWithRed:0.942 green:0.611 blue:0.771 alpha:1.000] range:range];
    // 背景色
    [attrStr addAttribute:NSBackgroundColorAttributeName value:[UIColor colorWithRed:0.475 green:0.482 blue:0.942 alpha:1.000] range:range];

    // stroke
    [attrStr addAttribute:NSStrokeColorAttributeName value:[UIColor blueColor] range:range];
    [attrStr addAttribute:NSStrokeWidthAttributeName value:@(2) range:range];

    // 设置段落样式
    [attrStr addAttribute:NSParagraphStyleAttributeName value:muParagraph range:range];

    // 文本方向
    [attrStr addAttribute:NSVerticalGlyphFormAttributeName value:@(1) range:range];
    [attrStr addAttribute:NSWritingDirectionAttributeName value:@[@(2),@(3)] range:range];


    // 阴影
    NSShadow *shadow = [[NSShadow alloc]init];
    shadow.shadowOffset = CGSizeMake(2, 2);
    shadow.shadowColor = [UIColor orangeColor];
    shadow.shadowBlurRadius = 1;
    [attrStr addAttribute:NSShadowAttributeName value:shadow range:range];

    // 链接
    [attrStr addAttribute:NSLinkAttributeName value:[NSURL URLWithString:@"http://www.jianshu.com/p/8f49c9c99b21"] range:range];

    // 文字中加图片
    NSTextAttachment *attachment=[[NSTextAttachment alloc] initWithData:nil ofType:nil];

    UIImage *img=[UIImage imageNamed:@"test.png"];
    attachment.image=img;
    attachment.bounds=CGRectMake(0, 0, 20, 20);
    [attrStr addAttribute:NSAttachmentAttributeName value:attachment range:range];

    // 基准线偏移
    [attrStr addAttribute:NSBaselineOffsetAttributeName value:@(50) range:range];

    self.attTV.attributedText = attrStr;