改变lable的行字列间距分类

UILabel+LineSpaceAndWordSpace.h

import

@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

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