NSAttributedString忽略UILabel的自动收缩和numberOfLines（iOS 6）

3 回答

• 0

  我找到了一种方法：

  label.adjustsFontSizeToFitWidth = true
  label.attributedText = attributedString
  label.lineBreakMode = .ByTruncatingTail // this did the trick!
  

  仅在设置属性字符串后设置第三行时才有效 . 似乎属性字符串在设置时会覆盖换行符（以及其他内容） .

  回复于 2024-05-03T05:38:10+08:00
• 6

  minimumFontSize 自iOS6起已弃用 . 此外，仅当 numberOfLines 设置为1时，adjustsFontSizeToFitWidth才有效.UILabel不会跨多行调整文本大小，因为在缩小字体时处理换行符时存在歧义 .

  使用 minimumScaleFactor 设置文本应缩放的最小大小 .

  以下代码将使用字体大小为20的属性字符串填充 UILabel ，并将其缩小一半，最小大小为10 .

  self.label.lineBreakMode = NSLineBreakByTruncatingTail;
  NSMutableAttributedString *hogan = [[NSMutableAttributedString alloc] initWithString:@"Presenting the great... Hulk Hogan! Presenting the great... Hulk Hogan! Presenting the great... Hulk Hogan! Presenting the great... Hulk Hogan! Presenting the great... Hulk Hogan! Presenting the great... Hulk Hogan! Presenting the great... Hulk Hogan!"];
  [hogan addAttribute:NSFontAttributeName
                value:[UIFont systemFontOfSize:20.0]
                range:NSMakeRange(0, [hogan length])];
  [self.label setAttributedText:hogan];
  self.label.adjustsFontSizeToFitWidth = YES;
  self.label.numberOfLines = 1;
  self.label.minimumScaleFactor = 0.5;
  

  回复于 2024-05-03T05:38:10+08:00
• 79

  NSMutableAttributedString *muAtrStr = [[NSMutableAttributedString alloc]initWithString:@"2"];
  NSAttributedString *atrStr = [[NSAttributedString alloc]initWithString:@"\ndays" attributes:@{NSFontAttributeName : [UIFont fontWithName:@"HelveticaNeue-Bold" size:8]}];
  [muAtrStr appendAttributedString:atrStr];
  self.lbl.numberOfLines = 0;
  [self.lbl setAttributedText:muAtrStr];
  

  回复于 2024-05-03T05:38:10+08:00