CODEWITHSUNDEEP
iosswiftcastingios8
Gopal Devra
Gopal Devra

Reputation: 171

How to convert or typecast UIViewController to AnyClass in Swift

I just want to convert any UIViewController subclass to AnyClass for checking from the isKindOfClass method because this method takes AnyClass as argument.

Upvotes: 3

Views: 4457

Answers (3)

Gopal Devra
Gopal Devra

Reputation: 171

Finally I reached at this solution

let name = NSStringFromClass((vcAnyObj?.classForCoder)!) 
let name2 = NSStringFromClass((appDelegateObj.navigationController!.topViewController?.classForCoder)!) 

if name == name2 { 
print("same view controller") 
}else { 
print("different view controller") 

}

Upvotes: 0

Akshansh Thakur
Akshansh Thakur

Reputation: 5341

func someMethod (someClass : AnyClass) {
   if someClass is YourClass {
     someClass.someMethodOfYourClass()
   }
}

To use this method

class YouClass: UIViewController {

   func something() {
    someMethod(self)    // sending itself (a.k.a) YourClass

   }
}

Hope this helps

Edit based on comment :

let controller = appDelegateObj.navigationController!.topViewController

if controller is ClassName {
    // controller good  to use
 }

Upvotes: 1

Luca D'Alberti
Luca D'Alberti

Reputation: 4859

Instead of using old Objective-C API, you can use the as or is keyword in swift.

if let controller = yourViewController as? SomeClass {
    // use controller, is already casted to SomeClass
}

if yourViewController is SomeClass {
    let controller = yourViewController as! SomeClass
    // use controller now
}

ADDING: If the memory addresses are different, the objects are not equal. Try to check for the topViewController type as I mentioned in the answer. 

if let topViewController = appDelegateObj.navigationController.topViewController as? YOUR_VIEW_CONTROLLER_CLASS {
     // do something 
}

Upvotes: 4

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