斯威夫特5

下面是将typeName作为变量获取的扩展(使用值类型或引用类型)。

protocol NameDescribable {
    var typeName: String { get }
    static var typeName: String { get }
}

extension NameDescribable {
    var typeName: String {
        return String(describing: type(of: self))
    }

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

使用方法:

// Extend with class/struct/enum...
extension NSObject: NameDescribable {}
extension Array: NameDescribable {}
extension UIBarStyle: NameDescribable { }

print(UITabBarController().typeName)
print(UINavigationController.typeName)
print([Int]().typeName)
print(UIBarStyle.typeName)

// Out put:
UITabBarController
UINavigationController
Array<Int>
UIBarStyle

试着反映了()。类self或实例dynamicType的摘要。在获取dynamicType之前解开可选项，否则dynamicType是可选包装器。

class SampleClass { class InnerClass{} }
let sampleClassName = reflect(SampleClass.self).summary;
let instance = SampleClass();
let instanceClassName = reflect(instance.dynamicType).summary;
let innerInstance = SampleClass.InnerClass();
let InnerInstanceClassName = reflect(innerInstance.dynamicType).summary.pathExtension;
let tupleArray = [(Int,[String:Int])]();
let tupleArrayTypeName = reflect(tupleArray.dynamicType).summary;

摘要是描述了泛型类型的类路径。要从摘要中获得简单的类名，请尝试此方法。

func simpleClassName( complexClassName:String ) -> String {
    var result = complexClassName;
    var range = result.rangeOfString( "<" );
    if ( nil != range ) { result = result.substringToIndex( range!.startIndex ); }
    range = result.rangeOfString( "." );
    if ( nil != range ) { result = result.pathExtension; }
    return result;
}

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

要获得类名为String，请按以下方式声明类

@objc(YourClassName) class YourClassName{}

并使用以下语法获取类名

NSStringFromClass(YourClassName)

斯威夫特3.0: 你可以创建一个像这样的扩展..它返回的是类名，而不是项目名

extension NSObject {
    var className: String {
        return NSStringFromClass(self as! AnyClass).components(separatedBy: ".").last ?? ""
    }

    public class var className: String {
        return NSStringFromClass(self).components(separatedBy: ".").last ?? ""
    }
}

Swift 3.0 (macOS 10.10及更高版本)，你可以从className中获取它

self.className.components(separatedBy: ".").last!