下面的代码在IOS4.0或以上版本运行正常,但是在IOS3.2中报错:"cannot find protocol declaration for 'NSXMLParserDelegate'
代码:
#import <Foundation/Foundation.h>
#if __IPHONE_OS_VERSION_MIN_REQUIRED >= __IPHONE_4_0
@interface MyClass: NSObject <NSXMLParserDelegate>
#else
@interface MyClass: NSObject
#endif
{
...
}