I am running into a problem when I attemp to call class_getInstanceMethod on a selected method in the parent class of a category I am writting.When I try to set the original method implementation using class_getInstanceMethod, it is returning 'nil'.When I try to set the Method implementation on a method in my category, it is not having any issues. Here is an example of what I am trying to do;// Thirdparty Library class in a CocoaPod
// ThirdPartyLogger.h
@interface ThirdPartyLogger : NSObject
-(instancetype)init;
-(void)deleteLogFiles;
@end
//ThirdPartyLogger.m
#import "ThirdPartyLogger.h"
@implementation
- (instancetype)init {
[self super];
return self;
}
-(void)deleteLogFiles {
// original implementation
}
@end
// Here is my code
// ThirdPartyLogger+David.h
#import "ThirdPartyLogger.h"
@interface ThirdPartyLogger (David)
- (void)deleteLogFilesDavid;
@end
// ThirdPartyLogger+David.m
#import "ThirdPartyLogger+David.h"
@implementation
-(void)deleteLogFilesDavid {
// new implementation
}
+(void)load {
original = class_getInstanceMethod(self, @selector(deleteLogFiles)); // returns nil :-(
swizzled = class_getInstanceMethod(self, @selector(deleteLogFilesDavid)); // returns a valid method implementation
method_exchangeImplementations(original, swizzled);
}
@endAny ideas?
davidfekke
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