设置label的行间距和字间距，动态计算该label高度（记录）

       NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:model.cinemaAddress];

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

//行间距

        [paragraphStyle setLineSpacing:10- (_location.font.lineHeight - _location.font.pointSize)];

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

//字体间隔

       [attributedString addAttribute:NSKernAttributeName value:@(2) range:NSMakeRange(0,  [model.cinemaAddress length])];

        _location.attributedText = attributedString;

        _location.lineBreakMode = NSLineBreakByTruncatingTail;

计算attributeString 的label高度

locationSize = [model.cinemaAddress boundingRectWithSize:CGSizeMake(_bgView.width - 2*_cinemaName.x, 1000) options:NSStringDrawingUsesLineFragmentOrigin attributes:@{设置label的一系列属性} context:nil].size;

height = locationSize.height;

只是简单的记录一下