斯威夫特5.2:

String(describing: type(of: self))

斯威夫特5

 NSStringFromClass(CustomClass.self)

如果你不喜欢这个乱七八糟的名字，你可以口述你自己的名字:

@objc(CalendarViewController) class CalendarViewController : UIViewController {
    // ...
}

然而，从长远来看，最好是学会解析这个混乱的名称。格式是标准的、有意义的，不会改变。

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

我建议这样的方法(非常Swifty):

// Swift 3
func typeName(_ some: Any) -> String {
    return (some is Any.Type) ? "\(some)" : "\(type(of: some))"
}

// Swift 2
func typeName(some: Any) -> String {
    return (some is Any.Type) ? "\(some)" : "\(some.dynamicType)"
}

它既不使用内省，也不使用手动提取(没有魔法!)

下面是一个演示:

// Swift 3

import class Foundation.NSObject

func typeName(_ some: Any) -> String {
    return (some is Any.Type) ? "\(some)" : "\(type(of: some))"
}

class GenericClass<T> {
    var x: T? = nil
}

protocol Proto1 {
    func f(x: Int) -> Int
}


@objc(ObjCClass1)
class Class1: NSObject, Proto1 {
    func f(x: Int) -> Int {
        return x
    }
}

struct Struct1 {
    var x: Int
}

enum Enum1 {
    case X
}

print(typeName(GenericClass<Int>.self)) // GenericClass<Int>
print(typeName(GenericClass<Int>()))  // GenericClass<Int>

print(typeName(Proto1.self)) // Proto1

print(typeName(Class1.self))   // Class1
print(typeName(Class1())) // Class1
print(typeName(Class1().f)) // (Int) -> Int

print(typeName(Struct1.self)) // Struct1
print(typeName(Struct1(x: 1))) // Struct1
print(typeName(Enum1.self)) // Enum1
print(typeName(Enum1.X)) // Enum1

我在Swift 2.2中使用它

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