比如一个Label的默认间距效果是这样
然后用一个封装起来的Category来调整这部分文字的行间
[UILabel changeLineSpaceForLabel:cell.describeLabel WithSpace:5.0];
调整后的效果是这样的
其中5.0就是我自定义的文字间距。
这是一个UILabel的Category，他的内部实现是这样的
UILabel+ChangeLineSpaceAndWordSpace.h
#import <UIKit/UIKit.h>@interface UILabel (ChangeLineSpaceAndWordSpace)/*** 改变行间距*/+ (void)changeLineSpaceForLabel:(UILabel *)label WithSpace:(float)space;/*** 改变字间距*/+ (void)changeWordSpaceForLabel:(UILabel *)label WithSpace:(float)space;/*** 改变行间距和字间距*/+ (void)changeSpaceForLabel:(UILabel *)label withLineSpace:(float)lineSpace WordSpace:(float)wordSpace;@end
UILabel+ChangeLineSpaceAndWordSpace.m
#import "UILabel+ChangeLineSpaceAndWordSpace.h"@implementation UILabel (ChangeLineSpaceAndWordSpace)+ (void)changeLineSpaceForLabel:(UILabel *)label WithSpace:(float)space {NSString *labelText = label.text;NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:labelText];NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];[paragraphStyle setLineSpacing:space];[attributedString addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:NSMakeRange(0, [labelText length])];label.attributedText = attributedString;[label sizeToFit];}+ (void)changeWordSpaceForLabel:(UILabel *)label WithSpace:(float)space {NSString *labelText = label.text;NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:labelText attributes:@{NSKernAttributeName:@(space)}];NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];[attributedString addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:NSMakeRange(0, [labelText length])];label.attributedText = attributedString;[label sizeToFit];}+ (void)changeSpaceForLabel:(UILabel *)label withLineSpace:(float)lineSpace WordSpace:(float)wordSpace {NSString *labelText = label.text;NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:labelText attributes:@{NSKernAttributeName:@(wordSpace)}];NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];[paragraphStyle setLineSpacing:lineSpace];[attributedString addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:NSMakeRange(0, [labelText length])];label.attributedText = attributedString;[label sizeToFit];}@end
