为什么我在尝试在 NSString 语句中使用 NSScanner 时收到错误消息？
我想知道为什么
Thread 1: Program received signal: "SIGABRT")
当我使用这行代码时收到错误消息：
NSScanner *userEntered = [[NSScanner alloc] scannerWithString:temp];
错误是：
2011-04-18 02:06:11.995 XXX[25929:207] -[NSConcreteScanner scannerWithString:]: unrecognized selector sent to instance 0x6816bc0
2011-04-18 02:06:11.999 XXX[25929:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[NSConcreteScanner scannerWithString:]: unrecognized selector sent to instance 0x6816bc0'
谢谢。
I would like to know why I get an error message
Thread 1: Program received signal: "SIGABRT")
When I use this line of code:
NSScanner *userEntered = [[NSScanner alloc] scannerWithString:temp];
The error is:
2011-04-18 02:06:11.995 XXX[25929:207] -[NSConcreteScanner scannerWithString:]: unrecognized selector sent to instance 0x6816bc0
2011-04-18 02:06:11.999 XXX[25929:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[NSConcreteScanner scannerWithString:]: unrecognized selector sent to instance 0x6816bc0'
Thank you.
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+scannerWithString 是一个类方法，应按以下方式使用：
+scannerWithString is a class method and should be used the following way: