字符串的编辑

/* 前字符串 后图标 拼接 */

• (NSAttributedString *)appendAttributedStringWithFrontTitle:(NSString *)title withBehindIcon:(NSString *)icon withTextColor:(UIColor *)textColor withTextFont:(UIFont *)textFont
  {
  NSMutableAttributedString *mutableAttr = [NSMutableAttributedString new];

  NSTextAttachment* textAttachment = [NSTextAttachment new];
  textAttachment.image = [UIImage imageNamed:icon];

  [mutableAttr appendAttributedString:[[NSAttributedString alloc] initWithString:title]];
  [mutableAttr addAttribute:NSForegroundColorAttributeName value:textColor range:NSMakeRange(0, title.length)];
  [mutableAttr addAttribute:NSFontAttributeName value:textFont range:NSMakeRange(0, title.length)];
  [mutableAttr appendAttributedString:[[NSAttributedString alloc] initWithString:@" "]];
  [mutableAttr appendAttributedString:[NSAttributedString attributedStringWithAttachment:textAttachment]];

  return mutableAttr;
  }