问题
If you're implementing a subclass, you can, within your implementation, explicitly call the superclass's method, even if you've overridden that method, i.e.:
[self overriddenMethod]; //calls the subclass's method
[super overriddenMethod]; //calls the superclass's method
What if you want to call the superclass's method from somewhere outside the subclass's implementation, i.e.:
[[object super] overriddenMethod]; //crashes
Is this even possible? And by extension, is it possible to go up more than one level within the implementation, i.e.:
[[super super] overriddenMethod]; //will this work?
回答1:
A more pleasant option (for debugging) is to add a category method which does it for you:
- (void) callSuperMethod { [super overriddenMethod]; }
The fact that there’s no more convenient way to do this is very much by design.
回答2:
You can send [[[object class] superclass] methodForSelector: ...] and invoke through the IMP pointer directly, if you want... but if you're doing this, there's probably something very wrong with your application's design.
来源：https://stackoverflow.com/questions/2877251/how-do-you-call-a-method-for-an-objective-c-objects-superclass-from-elsewhere