ios - 如何在 swift 中使用 performSelectorInBackground？

Question

import UIKit


class ViewController: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.

    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    @objc class myClass:NSObject {

        func myFunc(){
            for var i = 0; i < 10000; i++ {
                print(i,[NSThread.currentThread()]);
            }
        }
    }
    var myObj = myClass()

    override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
        _ = NSThread.init(target: myObj, selector:Selector(myObj.myFunc()), 

    object: nil)
        }
    }

当我运行上面的代码时，Xcode出现异常，信息是

[NSThread initWithTarget:selector:object:]: target does not implement selector

如何在 swift 中使用 performSelectorInBackground ??

Answer 1

简单的回答:你不需要。使用 dispatch_async。