Hi,
How do I test whether an object is an instance of a particular class in objective c? Let's say I want to see if object a is an instance of class b, or class c, how do I go about doing it? Thanks!
+9
A:
you can use
NSString *className = NSStringFromClass([myObject class]);
on a NSObject
Henrik P. Hessel
2010-01-13 10:38:54
Please don't use -className. It's API for use with scripting, see: <a href="http://developer.apple.com/mac/library/documentation/cocoa/reference/Foundation/Classes/NSObject_Class/Reference/Reference.html#//apple_ref/occ/instm/NSObject/className" title="NSObject Documentation">NSObject docs</a>The correct way to do this is:NSString *className = NSStringFromClass([myObject class]);
Jonathan Dann
2010-01-13 20:48:48
thanks, correct!
Henrik P. Hessel
2010-01-13 20:59:38
+7
A:
To test if object is an instance of class a:
[yourObject isKindOfClass:[a class]]
// Returns a Boolean value that indicates whether the receiver is an instance of
// given class or an instance of any class that inherits from that class.
or
[yourObject isMemberOfClass:[a class]]
// Returns a Boolean value that indicates whether the receiver is an instance of a
// given class.
To get object's class name you can use
const char* className = class_getName([yourObject class]);
Vladimir
2010-01-13 10:48:33