NSString *hintStr = @"输入材料标题搜索材料\n注:可根据材料序号直接搜索, 如TPO23";        CGSize size = [toolset returnTextStringSizeWithString:hintStr withBoundSize:CGSizeMake(Main_Screen_Width - 72, MAXFLOAT) withFont:FZHei(15)];        self.mHintLabelLayoutH.constant = size.height + 20;        [self.mHitLabel setNeedsLayout];        NSMutableAttributedString *prefixAttr = [[NSMutableAttributedString alloc] initWithString:hintStr];        [prefixAttr addAttribute:NSFontAttributeName value:FZHei(17) range:NSMakeRange(0, hintStr.length)];        [prefixAttr addAttribute:NSForegroundColorAttributeName value:ColorHui range:NSMakeRange(0, hintStr.length)];        [prefixAttr addAttribute:NSForegroundColorAttributeName value:HexRGB(0xc0c0c0) range:NSMakeRange(11, 21)];        [prefixAttr addAttribute:NSFontAttributeName value:FZHei(13) range:NSMakeRange(11, 21)];        NSMutableParagraphStyle *paragraphString = [[NSMutableParagraphStyle alloc] init];        [paragraphString setLineSpacing:8];    //设置行间距        [prefixAttr addAttribute:NSParagraphStyleAttributeName value:paragraphString range:NSMakeRange(0, hintStr.length)];        self.mHitLabel.attributedText = prefixAttr;

 

UILabel *dataLabel = [[UILabel alloc] init];   dataLabel.backgroundColor = [UIColor clearColor];   dataLabel.text = @"我是文字文字文字文字文字文字文字文字文字文字文字";   dataLabel.textColor = RGBACOLOR(97, 96, 98, 1);   dataLabel.font = [UIFont fontWithName:@"Arial" size:14];   dataLabel.numberOfLines = 0;   [backImage addSubview:dataLabel];       //富文本设置文字行间距   NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc]init];   paragraphStyle.lineSpacing = 4;   NSDictionary *attributes = @{ NSFontAttributeName:[UIFont systemFontOfSize:14], NSParagraphStyleAttributeName:paragraphStyle};   dataLabel.attributedText = [[NSAttributedString alloc]initWithString:dataLabel.text attributes:attributes];       //获取设置文本间距以后的高度   CGRect fram = [dataLabel.attributedText boundingRectWithSize:CGSizeMake(210, MAXFLOAT) options:NSStringDrawingUsesLineFragmentOrigin context:nil];