UILabel setLineHeightMultiple:

UILabel+TDKUtil.m

#import "UILabel+TDKUtil.h"
 
@implementation UILabel (TDKUtil)
 
- (void)setLineHeightMultiple:(CGFloat)lineHeightMultiple
{
    NSMutableAttributedString *attributedString = [self.attributedText mutableCopy];
 
    NSMutableParagraphStyle *paragrahStyle = [NSMutableParagraphStyle new];
    paragrahStyle.lineHeightMultiple = lineHeightMultiple;
    paragrahStyle.lineBreakMode = NSLineBreakByTruncatingTail;
 
    [attributedString addAttribute:NSParagraphStyleAttributeName
                             value:paragrahStyle
                             range:NSMakeRange(0, attributedString.length)];
 
    [self setAttributedText:attributedString];
}
 
@end