如何将Swift中的UIViewController转换为AnyClass

Question

我只是想将任何UIViewController的子类别转换为AnyClass，以便从isKindOfClass方法检查，因为此方法以AnyClass作为参数。

Answer 1

而不是使用旧的Objective-C API，您可以在swift中使用as或is关键字。

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： 如果存储器地址不同，物体是不相等的。尝试检查答案中提到的topViewController类型。

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

Answer 2

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

要使用此方法

class YouClass: UIViewController { 

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

    } 
} 

希望这有助于基于评论

编辑：

let controller = appDelegateObj.navigationController!.topViewController 

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

Answer 3

最后，我在这个解决方案达到

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

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

}