How to determine whether class B is a subclass of class A? How to determine whether class B is a subclass of class A? ios ios

How to determine whether class B is a subclass of class A?


It is available from iOS 2.0 and later version SDK

if ([ClassB isSubclassOfClass:[ClassA class]]) {    NSLog(@"yes ClassB is SubclassOfClass of ClassA");}       

Documentation:

isSubclassOfClass:

Returns a Boolean value that indicates whether the receiving class is a subclass of, or identical to, a given class.

   + (BOOL)isSubclassOfClass:(Class)aClass

Parameters

aClass

A class object.

Return Value

YES if the receiving class is a subclass of—or identical to—aClass, otherwise NO.

Availability

Available in iOS 2.0 and later.


id a= ...;if([a isKindOfClass:[A class]]){     ...}

should do the job. You rarely needs to see if it's really a sub class. See here.


matomo