iOS label 添加删除线(删划线)遇到的坑

1.添加删划线方法遇到的问题

-(void)lastLabelDeal:(NSString *)str1 string:(NSString *)str2 label:(UILabel *)label{

    NSMutableAttributedString

    *str = [[NSMutableAttributedString alloc] initWithString:[NSString stringWithFormat:@"%@  %@",str1,str2]];

    [str addAttribute:NSStrikethroughStyleAttributeName value:@(NSUnderlineStyleSingle|NSUnderlinePatternSolid) range:NSMakeRange(2, str1.length - 2)];

    [str

     addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:NSMakeRange(str1.length + 2,str2.length)];

 //以下3行代码是给label部分内容加删划线(这在iOS10.3之前一直这么用,没啥问题,可是10.3之后这样子实现就毫无效果了)

    [str addAttribute:NSStrikethroughStyleAttributeName value:@(NSUnderlinePatternSolid|NSUnderlineStyleSingle) range:NSMakeRange(2, str1.length - 2)];

    [str addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:12] range:NSMakeRange(2, str1.length - 2)];

    [str addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:NSMakeRange(2, str1.length - 2)];

    label.attributedText

    = str;

}

 2.最终解决办法(上面3行代码合并在一起最终实现了效果)

-(void)lastLabelDeal:(NSString *)str1 string:(NSString *)str2 label:(UILabel *)label{

    

    NSMutableAttributedString

    *str = [[NSMutableAttributedString alloc] initWithString:[NSString stringWithFormat:@"%@  %@",str1,str2]];

    [str addAttribute:NSStrikethroughStyleAttributeName value:@(NSUnderlineStyleSingle|NSUnderlinePatternSolid) range:NSMakeRange(2, str1.length - 2)];

    [str

     addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:NSMakeRange(str1.length + 2,str2.length)];

 //上面3行代码合并在一起最终实现了效果

    [str addAttributes:@{

                             NSStrikethroughStyleAttributeName:@(NSUnderlineStyleThick),

                             NSForegroundColorAttributeName:

                                 [UIColor lightGrayColor],

                             NSBaselineOffsetAttributeName:

                                 @(0),

                             NSFontAttributeName: [UIFont systemFontOfSize:12]

                             } range:NSMakeRange(2, str1.length - 2)];

    label.attributedText

    = str;

}

 

posted @ 2017-06-17 14:46  执笔葬青春  阅读(1192)  评论(0编辑  收藏  举报