目标C stringWithFormat if语句

Question

我对此非常陌生--我正在尝试将NSString stringWithFormat与一些文本进行比较。它可以很好地与stringWithString配合使用。我不明白为什么它不能和stringWithFormat一起工作？非常感谢任何人能提供的任何帮助！

    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

==是一个引用等值。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"];