布尔到 NSString

问题描述

如果我有一个返回 BOOL 的方法，如何将其转换为 NSString 以便在控制台中打印出来?

If I have a method that returns a BOOL, how do I cast that to an NSString so I can print it out in console?

例如，我尝试这样做，但不起作用:

For example, I tried doing this, which isn't working:

NSLog(@"Is Kind of NSString:", ([thing isKindOfClass:[NSString class]]) ? @"YES" : @"NO");

但是我真的很想把返回值变成一个 NSString.我知道它是一种原始数据类型，所以我不能在它上面调用方法.我是否必须单独创建一个字符串，然后在 NSString 上的方法中使用 Bool 作为参数?

But I really want to actually turn the return value into an NSString. I know it's a primitive data type, so I can't call methods on it. Do I have to create a string separately and then use the Bool as a parameter in a method on NSString?

推荐答案

您的格式字符串中需要一个格式说明符:

You need a formatting specifier in your format string:

NSLog(@"Is Kind of NSString: %@", ([thing isKindOfClass:[NSString class]]) ? @"YES" : @"NO");

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