NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc]initWithString:textString];

 [attributedString addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:14] range:NSMakeRange(0, textString.length)];
 [attributedString addAttribute:NSKernAttributeName value:@1 range:NSMakeRange(0, textString.length)];

 [attributedString addAttributes:@{NSFontAttributeName: [UIFont systemFontOfSize:14],NSKernAttributeName: @1} range:NSMakeRange(0, textString.length)];

 [attributedString addAttributes:@{NSFontAttributeName: [UIFont systemFontOfSize:26],NSForegroundColorAttributeName: [UIColor blueColor]} range:[textString rangeOfString:@"360云盘服务转型公告"]];

 // 此方法可以通过string获得范围进行修改
 NSRange startRange = [textString localizedStandardRangeOfString:@"我们即将采取以下措施："];
 NSRange endRange = [textString localizedStandardRangeOfString:@"感谢您的一路相伴。"];
 [attributedString addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:NSUnionRange(startRange, endRange)];

 // 设置文本下划线
 NSRange startRange1 = [textString localizedStandardRangeOfString:@"因此，"];
 NSRange endRange1 = [textString localizedStandardRangeOfString:@"之后转型企业云服务。"];
 [attributedString addAttribute:NSUnderlineStyleAttributeName value:@1 range:NSUnionRange(startRange1, endRange1)];

 // 设置文本的描边
 [attributedString addAttribute:NSStrokeWidthAttributeName value:@2.0 range:[textString rangeOfString:@"存储传播非法文件、侵权盗版牟利、传播淫秽色情信息等违法犯罪行为"]];
 [attributedString addAttribute:NSStrokeColorAttributeName value:[UIColor brownColor] range:[textString rangeOfString:@"存储传播非法文件、侵权盗版牟利、传播淫秽色情信息等违法犯罪行为"]];
 [attributedString addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:17] range:[textString rangeOfString:@"存储传播非法文件、侵权盗版牟利、传播淫秽色情信息等违法犯罪行为"]];

 // 插入图片附件
 NSTextAttachment *imageAtta = [[NSTextAttachment alloc] init];
 imageAtta.bounds = CGRectMake(0, 0, 375, 180);
 imageAtta.image = [UIImage imageNamed:@"360"];
 NSAttributedString *attach = [NSAttributedString attributedStringWithAttachment:imageAtta];
 [attributedString insertAttributedString:attach atIndex:0];

 // 段落样式
 NSMutableParagraphStyle *style = [[NSMutableParagraphStyle alloc]init];
 // 行间距
 [style setLineSpacing:3];
 // 段落间距
 [style setParagraphSpacing:6];
 // 首行缩进
 [style setFirstLineHeadIndent:25];
 [attributedString addAttribute:NSParagraphStyleAttributeName value:style range:NSMakeRange(1, textString.length)];

 // 网址链接
 NSRange urlRange = [textString rangeOfString:@"yunpan.360.cn"];
 [attributedString addAttribute:NSLinkAttributeName value:[NSURL URLWithString:@"http://yunpan.360.cn"] range:NSMakeRange(urlRange.location, 14)];
 [attributedString addAttribute:NSBackgroundColorAttributeName value:[UIColor greenColor] range:NSMakeRange(urlRange.location, 14)];

 #pragma mark ----------UITextViewDelegate----------
- (BOOL)textView:(UITextView *)textView shouldInteractWithURL:(NSURL *)URL inRange:(NSRange)characterRange interaction:(UITextItemInteraction)interaction {
 NSLog(@"%@",URL);
 return YES;
}

- (BOOL)textView:(UITextView *)textView shouldInteractWithTextAttachment:(NSTextAttachment *)textAttachment inRange:(NSRange)characterRange interaction:(UITextItemInteraction)interaction {
 NSLog(@"%@",textAttachment.image);
 return YES;
}

 // 字体
 NSFontAttributeName    // UIFont, default Helvetica(Neue) 12
 // 段落
 NSParagraphStyleAttributeName  // NSParagraphStyle, default defaultParagraphStyle
 // 文字颜色
 NSForegroundColorAttributeName // UIColor, default blackColor
 // 背景颜色
 NSBackgroundColorAttributeName // UIColor, default nil: no background
 // 描边颜色
 NSStrokeColorAttributeName  // UIColor, default nil: same as foreground color
 // 描边宽度
 NSStrokeWidthAttributeName  // NSNumber containing floating point value, default 0
 // 阴影
 NSShadowAttributeName    // NSShadow, default nil: no shadow
 // 附件
 NSAttachmentAttributeName   // NSTextAttachment, default nil
 // 链接URL
 NSLinkAttributeName    // NSURL (preferred) or NSString
 // 基线偏移量
 NSBaselineOffsetAttributeName  // NSNumber containing floating point value,default 0
 // 下划线
 NSUnderlineColorAttributeName  // UIColor, default nil: same as foreground color