Get class name of UIViewController in swift - ios

Question

How do you get the class name of a 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:
let appDelegate = UIApplication.sharedApplication().delegate as AppDelegate
let last_screen = appDelegate.popScreens?.lastObject as UIViewController
Can't do this.
if last_screen.class != self.navigationController.visibleViewController.class {
//....
}
no class method of UIViewController i.e last screen

Answer 1

To know your class name you can call something like this:
var className = NSStringFromClass(yourClass.classForCoder)

Answer 2

The cleanest way without needing to know the name of your class is like this.
let name = String(describing: type(of: self))

Answer 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)

Answer 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!
}
}

Answer 5

Swift 4
Suppose we have class with name HomeViewController. Then you can get name of class with the following code:
let class_name = "\(HomeViewController.classForCoder())"
The classForCoder() method returns AnyClass object (name of your class) which we convert to string for user.

Answer 6

Here is a swift3 version of isuru's answer.
extension UIViewController {
var className: String {
return NSStringFromClass(self.classForCoder).components(separatedBy: ".").last!;
}
}

Answer 7

Swift 5 solution:
extension NSObject {
var className: String {
return String(describing: type(of: self))
}
class var className: String {
return String(describing: self)
}
}
USAGE:
class TextFieldCell: UITableVIewCell {
}
class LoginViewController: UIViewController {
let cellClassName = TextFieldCell.className
}

Answer 8

The property is called dynamicType in Swift.

Answer 9

Use String.init(describing: self.classForCoder)
example:
let viewControllerName = String.init(describing: self.classForCoder)
print("ViewController Name: \(viewControllerName)")

Answer 10

How about:
extension NSObject {
static var stringFromType: String? {
return NSStringFromClass(self).components(separatedBy: ".").last
}
var stringFromInstance: String? {
return NSStringFromClass(type(of: self)).components(separatedBy: ".").last
}
}

Answer 11

We can also do: String(describing: Self.self) in Swift 5.1.