有时候设计师出的图，字体行间距会有特殊要求，因为默认间距太挤了，此时就需要代码设置一下：
OC:
- (NSAttributedString *)setLineSpaceWith:(CGFloat)space
font:(UIFont *)font
text:(NSString *)text{
NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc]init];
paragraphStyle.lineSpacing = space - (font.lineHeight - font.pointSize);
NSDictionary *dic = @{NSParagraphStyleAttributeName: paragraphStyle};
NSAttributedString *attr = [[NSAttributedString alloc]initWithString:text attributes:dic];
return attr;
}
Swift:
func setTextLineSpace(text: String,
space: CGFloat,
font: UIFont) -> NSAttributedString {
let paragraphStyle = NSMutableParagraphStyle()
paragraphStyle.lineSpacing = space - (font.lineHeight - font.pointSize)
let text = NSAttributedString.init(string: text, attributes: [NSAttributedStringKey.paragraphStyle: paragraphStyle])
return text
}
