为富文本同时添加删除线和下划线

NSDictionary *attrDict1 =@{NSStrikethroughStyleAttributeName:@(NSUnderlineStyleSingle),NSFontAttributeName: [UIFont systemFontOfSize:self.font.pointSize],NSBaselineOffsetAttributeName:@(0)};

NSMutableAttributedString * str = [[NSMutableAttributedString alloc]initWithString:self.textattributes: attrDict1];

NSDictionary * attrDict2 = @{NSUnderlineStyleAttributeName:@(NSUnderlineStyleSingle),NSFontAttributeName: [UIFontsystemFontOfSize:self.font.pointSize],NSBaselineOffsetAttributeName:@(0)};

[str addAttributes:attrDict2 range:NSMakeRange(0,self.text.length)]; 

self.attributedText= str;