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;

}