UILabel多行

Question

我有一个UILable，当我按下按钮时显示文字。文本来自属性字符串。其中一个按钮调用上标属性：

string = [[NSMutableAttributedString alloc]initWithString:@"A"];
[string addAttribute:NSFontAttributeName value:(font) range:NSMakeRange(string.length-1, 1)];
[string addAttribute:(NSString*)kCTSuperscriptAttributeName value:@"1" range:NSMakeRange(string.length-1, 1)];
[string2 appendSttributedString: string];
label.attributedText = string2;

只要string2适合UILable中的一行，此代码就可以正常工作。当文本开始跨越两行时，它应该显示出来。但是，当添加kCTSuperscriptAttributeName上标属性时，标签的第二行将消失并被截断。我不知道最近发生了什么。有人有想法吗？

Answer 1

确保将UILabel上的numberOfLines属性设置为2或其他内容，以便标签不会截断第一行以外的内容。希望这有帮助！

Answer 2

您是否为NSAttributedString尝试'NSBaselineOffsetAttributeName'？

     -(void)setText:(id)text withPrefixText:(id)prefixText andSuffixText:(id)suffixText
 {
NSString * compondText = [self textByCompoundingText:text withPrefixText:prefixText WithsuffixText:suffixText];
NSMutableAttributedString * attributedCompoundText = [[NSMutableAttributedString alloc] initWithString:compondText];

NSMutableDictionary * prefixTextAttributes = [@{} mutableCopy];
prefixTextAttributes[NSFontAttributeName]  = _prefixTextFont? _prefixTextFont:self.font;
prefixTextAttributes[NSForegroundColorAttributeName] = _prefixTextColour? _prefixTextColour:self.textColor;
NSNumber *baselineOffSet =[NSNumber numberWithUnsignedInteger:_prefixTextVerticalPositionning];
prefixTextAttributes[(NSString*)NSBaselineOffsetAttributeName] = baselineOffSet;

NSMutableDictionary * suffixTextAttributes = [@{} mutableCopy];
suffixTextAttributes[NSFontAttributeName]  = _suffixTextFont? _suffixTextFont:self.font;
suffixTextAttributes[NSForegroundColorAttributeName] = _suffixTextColour ?_suffixTextColour:self.textColor;
baselineOffSet = [NSNumber numberWithUnsignedInteger:_suffixTextVerticalPostioning];
suffixTextAttributes[(NSString*)NSBaselineOffsetAttributeName] = baselineOffSet;
if(prefixText)
    [attributedCompoundText addAttributes:prefixTextAttributes  range:[compondText rangeOfString:prefixText]];
if(suffixText)
    [attributedCompoundText addAttributes:suffixTextAttributes  range:[compondText rangeOfString:suffixText]];
self.attributedText = attributedCompoundText;
}