CODEWITHSUNDEEP
iosobjective-cclassuiviewcontroller
hzxu
hzxu

Reputation: 5823

iOS: How to check a given Class is a kind of UIViewController class?

I am writing a method that returns a view controller instance for a given view controller class, but I need to make sure the class passed in is actually a view controller class:

- (UIViewController *)viewControllerWithClass:(Class)cls nibName:(NSString *)nibName
{
    if (cls is kind of UIViewController subclass)
        return [[[cls alloc] initWithNibNamed:nibName bundle:nil] autorelease];
    return nil;
}

I cannot compare the name of the class since cls may not be UIViewController.

edit:

Sorry I meant inside the method, how do I check if cls is a kind of UIViewController subclass

Upvotes: 7

Views: 12398

Answers (5)

Alan M
Alan M

Reputation: 98

This answer comes a little late, but since you want to check the class of a Class Object (not an instance of a class), the following is the appropriate test:

if(cls == [UIViewController class]) {
   // Whatever ...
}

Upvotes: 0

Dipen Panchasara
Dipen Panchasara

Reputation: 13600

// Check This out
if([youViewControllerObject isKindOfClass:[UIViewController class]])
{
    NSLog(@"isViewcontroller Class");
}

Upvotes: 0

βhargavḯ
βhargavḯ

Reputation: 9836

If you have a class object representing the Objective-C class to be tested then use + (BOOL)isSubclassOfClass:(Class)aClass which 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. (required)

if([cls isKindOfClass:[UIViewController class]])
{
}

EDIT

If you have a class object which is a subclass of—or identical to class to be tested then use + (BOOL)isSubclassOfClass:(Class)aClass which returns a Boolean value that indicates whether the receiving class is a subclass of, or identical to, a given class.

if([cls isSubclassOfClass:[UIViewController class]])
{
}

Upvotes: 0

Yashesh
Yashesh

Reputation: 1762

you can use the below code.

if ([cls isKindOfClass:[UIViewController class]]) {
    //your code
}

Upvotes: 1

Hasintha Janka
Hasintha Janka

Reputation: 1639

if ([cls isSubclassOfClass:[UIViewController class]]) {


   //Your code

}

Upvotes: 24

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