Get Rid of NSCachedURLResponse's Encoding Methods Warning

Before xcode 4.3 we can use this to encode and decode NSCachedURLResponse:

 

@implementation NSCachedURLResponse (NSCoder)

- (void)encodeWithCoder:(NSCoder *)coder {

     // TODO: 

}

 

- (id)initWithCoder:(NSCoder *)coder {

     // TODO: 

}

@end

 

But in xcode 4.3, it will cause a warng.

There are two methods to avoid the warning.

One:

ref, https://github.com/rs/SDURLCache/pull/29

Two:

 

@interface NSCachedURLResponse (ABC)

+ (void)swapMethods;

- (id)myInitWithCoder:(NSCoder *)aCoder;

- (void)myEncodeWithCoder:(NSCoder *)aCoder;

@end

 

 

#include <objc/objc.h>

#import <objc/runtime.h>

#import <objc/message.h>

 

void SwapMethods(Class cls, SEL originalSel, SEL newSel) {

    Method originalMethod = class_getInstanceMethod(cls, originalSel);

    Method newMethod = class_getInstanceMethod(cls, newSel);

    method_exchangeImplementations(originalMethod, newMethod);

}

 

 

 

@implementation NSCachedURLResponse (ABC)

+ (void)swapMethods {

    Class tempClass = [NSCachedURLResponse class];

    SwapMethods(tempClass, @selector(initWithCoder:), @selector(myInitWithCoder:));

    SwapMethods(tempClass, @selector(encodeWithCoder:), @selector(myEncodeWithCoder:));

}

- (id)myInitWithCoder:(NSCoder *)aCoder {

     // TODO: 

}

- (void)myEncodeWithCoder:(NSCoder *)aCoder {

    // TODO: 

}

@end