标签UnderLine不显示

Question

我想在标签上加下划线。为此，我使用了以下代码。我使用的是自定义字体：

headingLbl.font=[UIFont fontWithName:GZFont size:20.0f];
NSMutableAttributedString *gpsSearch = [[NSMutableAttributedString alloc] initWithString:@"GPS Search"];
[gpsSearch addAttribute:(NSString*)kCTUnderlineStyleAttributeName
                        value:[NSNumber numberWithInt:kCTUnderlineStyleSingle]
                        range:(NSRange){0,[gpsSearch length]}];
self.headingLbl.attributedText = gpsSearch;
self.headingLbl.textColor = [UIColor blackColor];

Answer 1

使用下面的代码。这对我很有效。

NSMutableAttributedString *gpsSearch = [[NSMutableAttributedString alloc] initWithString:@"GPS Search"];
[gpsSearch addAttribute:NSUnderlineStyleAttributeName
                      value:[NSNumber numberWithInt:NSUnderlineStyleSingle]
                      range:(NSRange){0,[gpsSearch length]}];

如果它不工作，那么问题可能出在您的自定义字体上

Answer 2

NSString *tempString=@"your string"; 

NSMutableAttributedString *attString=[[NSMutableAttributedString     
alloc]initWithString:tempString];     

int length=(int)[tempString length];  

[attString addAttribute:NSUnderlineStyleAttributeName value:[NSNumber numberWithInt:2] 
range:NSMakeRange(0,length-1)];