Basic AsyncTask implementation in Swift. Like http://developer.android.com/reference/android/os/AsyncTask.html

AsyncTask.swift

//
//  AsyncTask.swift
//
//  Created by Douglas Nassif Roma Junior on 08/06/15.
//  Copyright (c) 2015 Douglas Nassif Roma Junior. All rights reserved.
//

import Foundation

class AsyncTask<Params, Progress, Result> : NSObject {
    
    var backgroundTask : (params: Array<Params>?) -> Result? = {(params: Array<Params>?) -> Result? in return nil};
    var beforeExecute : () -> Void = {};
    var afterExecute : (result : Result?) -> Void = {(result : Result?) -> Void in };
    
    private var interrupted = false;
    
    func execute(params : Array<Params>){
        dispatch_after(0, dispatch_get_main_queue(), {
            if (self.beforeExecute != nil) {
                self.beforeExecute();
            }
            dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), {
                var result = self.backgroundTask(params: params);
                dispatch_after(0, dispatch_get_main_queue(), {
                    self.afterExecute(result: result);
                })
            })
        })
    }
    
    func execute(){
        self.execute(Array());
    }
    
    func interrupt(){
        interrupted = true;
    }
    
    func isInterrupted() -> Bool {
        return interrupted;
    }
}

Hi Douglas, can you also provide a swift3 version for the above class. My xcode converted it into some error. Thanks.

@autoaim800 Sorry, I'm without Mac at the moment :(