objective-c - Objective C stringWithFormat if 语句

Question

我对此很陌生-我正在尝试将 NSString stringWithFormat 与一些文本进行比较。它适用于 stringWithString。我无法弄清楚为什么它不适用于 stringWithFormat？非常感谢任何人都可以提供的任何帮助！

    NSString *theQuestion = [NSString stringWithFormat:@"The same thing"];
if (theQuestion == @"The same thing"){
        NSLog(@"stringWithFormat is the same as the given text");
    }else{
NSLog(@"stringWithFormat is NOT the same as the given text");
        NSLog(@"but theQuestion is:\"%@\"", theQuestion);
    }

Answer 1

==是参考相等。要进行字符串比较，它必须是

if([theQuestion isEqualToString:@"The same thing"]){

}

Answer 2

它应该是：

NSString *theQuestion = [NSString stringWithFormat:@"%@",@"The same thing"];