swift 并没有使用新一套线程,使用OC源有的一套线程。下面以例子来演示一下swift中使用线程。
其用包括常见的:NSThread,NSOperationQueue,GCG
import UIKit class swiftThreadDemo : UIViewController { var queue = NSOperationQueue() // init() // { // //alloc // super.init() // } deinit { //dealloc } func testGCDThread() { dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), { //这里写需要大量时间的代码 for var i = 0; i < 100000; i++ { println("GCD thread running.") } sleep(5); dispatch_async(dispatch_get_main_queue(), { //这里返回主线程,写需要主线程执行的代码 println("这里返回主线程,写需要主线程执行的代码") }) }) } func testNSThread() { //方式一 //NSThread.detachNewThreadSelector("threadInMainMethod:",toTarget:self,withObject:nil) //方式二 var myThread = NSThread(target:self,selector:"threadInMainMethod:",object:nil) myThread.start() } func threadInMainMethod(sender : AnyObject) { for var i = 0; i < 100000; i++ { println("NSThread running.") } sleep(5); println("NSThread over.") } func testNSOperationQueue() { //func (op: NSOperation!) var mopt = myOperationThread() queue.addOperation(mopt) } } class myOperationThread : NSOperation { override func start() { super.start() } override func main() { for var i = 0; i < 100000; i++ { println("NSOperation running.") } println("NSOperation over.") } }
var st = swiftThreadDemo() st.testNSThread() sleep(2) st.testGCDThread() st.testNSOperationQueue()
初探swift语言的学习笔记五(线程),布布扣,bubuko.com
原文地址:http://blog.csdn.net/fengsh998/article/details/30354127