how to hooking a class method？

[sayHelloox]

I find some answer like https://github.com/steipete/Aspects/issues/20 https://github.com/steipete/Aspects/issues/27, but I found those can not work, do someone have other solution, thanks!

[Assuner-Lee]

id object = objectgetClass(obj); [object aspect...]

[sayHelloox]

can not work for me , What am wrong with me?

id object = object_getClass([TestObject new]);

[object aspect_hookSelector:@selector(testClassMethod) withOptions:AspectPositionAfter usingBlock:^(id<AspectInfo> info){
    NSLog(@"Class method ------ hook");

} error:NULL];

//then call method [TestObject testClassMethod];

// No log "Class method ------ hook" print

[Assuner-Lee]

id class = object_getClass(obj); id metaClass = objectgetClass(class); [metaClass aspect...]

[shinyYangYang]

1. import <objc/runtime.h>

2. fetch MetaClass Object

   Class settingsMetal = objc_getMetaClass(NSStringFromClass(Settings.class).UTF8String);

3. hook with the MetaClass Object

   NSError error = nil; [settingsMetal aspect_hookSelector:@selector(hello:) withOptions:AspectPositionBefore usingBlock:^(id info, NSString hello){

   } error:&error]; NSLog(@"error %@", error);

Hope this help you ！