iphone - NSCaseInSensitive在iOS中

Question

我正在进行子字符串比较，我这样做是这样

 if ([mystring rangeOfString:string options:NSCaseInsensitiveSearch].location == NSNotFound) {
        return NO;
    } else {
        return YES;
    }

但这在与Read和READ比较时不起作用

Answer 1

抱歉，但是您的代码对我有用...如果我在XCode中执行此操作:

if ([@"Read" rangeOfString:@"READ" options:NSCaseInsensitiveSearch].location == NSNotFound) {
    NSLog(@"NO!!");
} else {
    NSLog(@"YES!!");
}

我得到以下输出:

YES!!