Swift/OC - 设置行间距

Swift4.0

let paragraphStye = NSMutableParagraphStyle()
//调整行间距
paragraphStye.lineSpacing = 5.0
paragraphStye.lineBreakMode = NSLineBreakMode.byWordWrapping
let attributedString = NSMutableAttributedString.init(string: self.contentLab.text!, attributes: [NSAttributedStringKey.paragraphStyle:paragraphStye])
self.contentLab.attributedText = attributedString

OC版：
NSMutableAttributedString *attriText = [[NSMutableAttributedString alloc] initWithString:content];
NSMutableParagraphStyle *paragraphStyle = [NSMutableParagraphStyle new];
[paragraphStyle setLineSpacing:5];
[paragraphStyle setLineBreakMode:NSLineBreakByWordWrapping];
[attriText addAttributes:@{NSFontAttributeName:[UIFont systemFontOfSize:fontSize],NSForegroundColorAttributeName:UIColorFromRGB(0x333333,1),NSParagraphStyleAttributeName:paragraphStyle} range:NSMakeRange(0, content.length)];