如何在if语句中检查UILabel的值是否大于0？

Question

如何在if语句中检查UILabel的值是否大于0？

我尝试过以下代码：

if(ArtCount.text.intValue > 0)
{
}

但它回来时出现以下错误：

2011-12-01 20:52:50.124 iDHSB[2955:707] -[UILabel isEqualToString:]: unrecognized selector sent to instance 0x1a9860
2011-12-01 20:52:50.126 iDHSB[2955:707] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-    
[UILabel isEqualToString:]: unrecognized selector sent to instance 0x1a9860'
*** First throw call stack:
(0x323e28bf 0x35cfa1e5 0x323e5acb 0x323e4945 0x3233f680 0x3152b191 0x6cff3 0x316cf871 0x323e5814 0x323407e1 0x323403ff      
0x34767e5b 0x323e4ab3 0x3233f680 0x323e5814 0x323407e1 0x33dcb43d 0x33dde8dd 0x323b6b03 0x323b62cf 0x323b5075 0x323384d5 
0x3233839d 0x378b7439 0x315558e1 0x2d0f 0x2758)
terminate called throwing an exception[Switching to process 7171 thread 0x1c03]
(gdb) 

Answer 1

错误消息：

[UILabel isEqualToString:]: unrecognized selector sent to instance 0x1a9860
2011-12-01 20:52:50.126 iDHSB[2955:707] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-    
[UILabel isEqualToString:]: unrecognized selector sent to instance

表示导致异常的行在isEqualToString的实例上调用方法UILabel，提供的代码不包含此方法调用。

查找在isEqualToString实例上调用UILabel的语句。

Answer 2

if ([ArtCount.text intValue] > 0) {
  ...
}

我希望它有所帮助！