延迟运行，在主线程的话，之前已经实现：
func delayDispatchInMainThread(delayTimeInSec:Double, thingsTodo:()->()) { let dispatchDelayTime = dispatch_time( DISPATCH_TIME_NOW, Int64(delayTimeInSec * Double(NSEC_PER_SEC)) ) dispatch_after(dispatchDelayTime, dispatch_get_main_queue(), thingsTodo) } delayDispatchInMainThread(deayTimeInSec, thingsTodo: self.closeCurrentAndReturnToMain) |
swift delay function non main thread
swift delay function other thread
swift dispatch_after non main thread
In Swift how to call method with parameters on GCD main thread? – Stack Overflow
swift dispatch background thread
ios – How to use background thread in swift? – Stack Overflow
最后暂时用代码：
//delay to save message list let qualityOfServiceClass = QOS_CLASS_BACKGROUND let backgroundQueue = dispatch_get_global_queue(qualityOfServiceClass, 0) let dispatchDelayTime = dispatch_time( DISPATCH_TIME_NOW, Int64(0.2 * Double(NSEC_PER_SEC)) ) dispatch_after(dispatchDelayTime, backgroundQueue, { msgTVC.storeData() }) |
最后优化为：
//delay to save message list delayDispatchInBackgroundThread(0.2, thingsTodo: { msgTVC.storeData() }) func delayDispatch(delayTimeInSec:Double, inThread:dispatch_queue_t, thingsTodo:()->()) { let dispatchDelayTime = dispatch_time( DISPATCH_TIME_NOW, Int64(delayTimeInSec * Double(NSEC_PER_SEC)) ) dispatch_after(dispatchDelayTime, inThread, thingsTodo) } func delayDispatchInMainThread(delayTimeInSec:Double, thingsTodo:()->()) { // let dispatchDelayTime = dispatch_time( // DISPATCH_TIME_NOW, // Int64(delayTimeInSec * Double(NSEC_PER_SEC)) // ) // // let mainQueue = dispatch_get_main_queue() // // dispatch_after(dispatchDelayTime, mainQueue, thingsTodo) let mainQueue = dispatch_get_main_queue() delayDispatch(delayTimeInSec, inThread: mainQueue, thingsTodo: thingsTodo) } func delayDispatchInBackgroundThread(delayTimeInSec:Double, thingsTodo:()->()) { // let dispatchDelayTime = dispatch_time( // DISPATCH_TIME_NOW, // Int64(delayTimeInSec * Double(NSEC_PER_SEC)) // ) // // let backgroundQueue = dispatch_get_global_queue(QOS_CLASS_BACKGROUND, 0) // // dispatch_after(dispatchDelayTime, backgroundQueue, thingsTodo) let backgroundQueue = dispatch_get_global_queue(QOS_CLASS_BACKGROUND, 0) delayDispatch(delayTimeInSec, inThread: backgroundQueue, thingsTodo: thingsTodo) } |
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