我有一个启动3个异步线程的函数。每个线程都做一些需要花费一些时间的事情。当某个线程先完成时,我需要它来停止另外两个线程,但我还不知道怎么做。
我的代码:
class SomeController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
threads();
}
func threads(){
let operationQueue = NSO
在一个函数之后使用Alamofire多任务执行。我使用gcd,NSOperationQueue都失败了。请帮我解主题。
下面是伪代码:
let imgDatas1 = UIImageJPEGRepresentation(UIImage(named: "aar")!, 0.1)
let strUrl1 = "http://www.baidu.com"
let group = dispatch_group_create()
let queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_
简而言之,在Objective-C cocoa中,我想编写一些功能与以下Java伪代码相同的程序:
public class MainClass
{
public void mainmethod() //Gets called at start of program
{
UILabel label = CreateAButton();
new DaemonClass(label).start();
//Do things without being interrupted by the Daemon class sleeping
我想在一个带有对象的新线程中传递一个(NSString *)。这样我就可以在后台线程和主线程中更改它,我可以得到这样的修改代码
//this method will create a thread for sleepAndAssign ,and i want to pass the param type is NSString * . the background thread is to change the param's value.
NSString *param = @"0";
[self performSelectorInBackground:@sel