label设置行间距

NSString *labelText = @"明明白白消费！按国家旅游法规定：绝无自费、一价全包！\n1、景点体验升级 我们精心为您挑选景点 ：每日一主题，简单有特色★★★★☆ ！\n2.用餐升级：团餐特别升级烤黑猪肉、人参炖鸡、等…";

    NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:labelText];
    NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];
    [paragraphStyle setLineSpacing:6];//调整行间距
    paragraphStyle.lineBreakMode = NSLineBreakByTruncatingTail; // 填不满用省略号
    [attributedString addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:NSMakeRange(0, [labelText length])];
    self.recommendReasonLabel.attributedText = attributedString;
    [self.recommendReasonLabel sizeToFit];