標籤在線不顯示

Question

我想爲標籤添加下劃線。爲此，我使用了下面的代碼。我正在使用自定義字體：

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

使用下面的代碼。這對我有效。

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

如果沒有奏效，那麼問題可能是您的自定義字體

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)];