我在Swift 2.2中使用它

guard let currentController = UIApplication.topViewController() else { return }
currentController.classForCoder.description().componentsSeparatedByString(".").last!

斯威夫特5:

方式1:

print("Class: \(String(describing: self)), Function: \(#function), line: \(#line)")

输出:

Class: <Test.ViewController: 0x7ffaabc0a3d0>, Function: viewDidLoad(), line: 15

方式2:

print("Class: \(String(describing: type(of: self))), Function: \(#function), line: \(#line)")

输出:

Class: ViewController, Function: viewDidLoad(), line: 16

来自实例的字符串:

String(describing: self)

类型中的字符串:

String(describing: YourType.self)

例子:

struct Foo {

    // Instance Level
    var typeName: String {
        return String(describing: Foo.self)
    }

    // Instance Level - Alternative Way
    var otherTypeName: String {
        let thisType = type(of: self)
        return String(describing: thisType)
    }

    // Type Level
    static var typeName: String {
        return String(describing: self)
    }

}

Foo().typeName       // = "Foo"
Foo().otherTypeName  // = "Foo"
Foo.typeName         // = "Foo"

用类、结构和enum测试。

我一直在断断续续地寻找这个答案。我使用GKStateMachine，喜欢观察状态变化，想要一种简单的方法来查看类名。我不确定它是iOS 10还是Swift 2.3，但在这种环境下，以下内容正是我想要的:

let state:GKState?
print("Class Name: \(String(state.classForCoder)")

// Output:    
// Class Name: GKState

这个解决方案适用于所有的类

Swift 5解决方案:

extension NSObject {
  var className: String {
    return String(describing: type(of: self))
  }

  class var className: String {
    return String(describing: self)
  }
}

用法:

class TextFieldCell: UITableVIewCell {
}

class LoginViewController: UIViewController {
  let cellClassName = TextFieldCell.className
}

斯威夫特3.0

字符串(描述:MyViewController.self)