ios - 我有两个 if 语句，第一个被跳过，为什么？

Question

您好，我在使用多个 if 语句时遇到问题。这是我的代码:

if ([itemOnSpecial caseInsensitiveCompare: @"yes"] == NSOrderedSame) {
    UILabel *specialLabel = (UILabel*) [cell viewWithTag:5];
    specialLabel.text = specialPrice;
    [specialLabel setHidden:NO]; 
    }
//This statement is completely skipped

if ([isOnBulkSpecial caseInsensitiveCompare:@"yes"] == NSOrderedSame) {
            UILabel *specialLabel = (UILabel*) [cell viewWithTag:5];
            specialLabel.text = bulkSpecialPrice;
            [specialLabel setHidden:NO]; 

}else{
    UILabel *specialLabel = (UILabel*) [cell viewWithTag:5];
    [specialLabel setHidden:YES];
}

仅考虑第二个 if 语句。第一个 if 语句似乎被完全忽略了。

Answer 1

如果您将代码更改为:

if ([itemOnSpecial caseInsensitiveCompare: @"yes"] == NSOrderedSame) {
    UILabel *specialLabel = (UILabel*) [cell viewWithTag:5];
    specialLabel.text = specialPrice;
    [specialLabel setHidden:NO]; 
    }
else
{


   if ([isOnBulkSpecial caseInsensitiveCompare:@"yes"] == NSOrderedSame) {
        UILabel *specialLabel = (UILabel*) [cell viewWithTag:5];
            specialLabel.text = bulkSpecialPrice;
            [specialLabel setHidden:NO]; 

   }else{
       UILabel *specialLabel = (UILabel*) [cell viewWithTag:5];
       [specialLabel setHidden:YES];
   }
}

那么只有当第一个 if 语句没有通过时才会调用第二个 if 语句。这样 specialLabel.text 属性不会更改两次，并且该值不会在第二个 if 中被覆盖