Get class name of UIViewController in swift

How to get class name of UIViewController Class in swift

In Objective C, we can do something like this :

self.appDelegate = (shAppDelegate *)[[UIApplication sharedApplication] delegate];
    UIViewController *last_screen = self.appDelegate.popScreens.lastObject ;

    if(last_screen.class != self.navigationController.visibleViewController.class){

    //.......

}

but in swift I tried like this

let appDelegate = UIApplication.sharedApplication().delegate as AppDelegate
    let last_screen = appDelegate.popScreens?.lastObject as UIViewController

cant do this.

if last_screen.class != self.navigationController.visibleViewController.class{

//....

}

no class method of UIViewController i.e last screen

Solution 1:

To know your class name you can call something like this:

var className = NSStringFromClass(yourClass.classForCoder)

Solution 2:

The cleanest way without needing to know the name of your class is like this.

let name = String(describing: type(of: self))

Solution 3:

A simple way in swift 3 is to write the below code:

for instances:

let className = String(describing: self)

for classes:

let className = String(describing: YourViewController.self)

Solution 4:

Expanding on juangdelvalle's answer.

I added this as an extension so that it's reusable and easier to call from any view controller. Also in some cases NSStringFromClass in Swift returns a string in the format like this:

< project name >.viewControllerClassName.

This extension property is modified to get rid of the project name prefix and return only the class name.

extension UIViewController {
    var className: String {
        NSStringFromClass(self.classForCoder).components(separatedBy: ".").last!
    }
}