调整label间距

NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc]initWithString:contentLabel.text];

NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc]init];

[paragraphStyle setLineSpacing:5];

[attributedString addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:NSMakeRange(0, contentLabel.text.length)];

contentLabel.attributedText = attributedString;
//调节高度
CGSize rectSize = CGSizeMake(kScreenWidth-10, 500000);
    
CGSize labelSize = [contentLabel sizeThatFits:rectSize];