NSXMLParserDelegate Error when upgrading iphone code 3.x code to 4.0

Question

I have updated my iphone sdk code from 3.x to 4.0.

I am getting cannot find protocol declaration for NSXMLParserDelegate Its showing error when build and debug but when i run application its showing as warning. I just want to remove all before submitting to app store

If i added protocol declaration then its not compiling for 3.x

How to overcome this?. I have seen couple of posts but didn't find answer to exact problem.

So i am posting new question here.

Thank you

Answer 1

Hi there!!

I have written following code in header files where ever necessary.

I still doubt whether its right approach....

if __IPHONE_OS_VERSION_MAX_ALLOWED >= 40000

    @interface CustomViewController : UIViewController <..., NSXMLParserDelegate >{ 

else

@interface CustomViewController : UIViewController <....>{  

endif