nsrunloop

NSDefaultRunLoopMode vs NSRunLoopCommonModes

由 强颜欢笑 提交于 2019-11-26 19:14:41
Dear good people of stackoverflow, Just like the last time, I hereby bring up a question I recently stumble upon. I hope someone out there could shed some light on me. Whenever I try to download a big file behind UIScrollView , MPMapView or something, the downloading process gets halted as soon as I touch iPhone screen. Thankfully, an awesome blog post by Jörn suggests an alternative option, using NSRunLoopCommonModes for connection. That gets me look into detail of the two modes, NSDefaultRunLoopMode and NSRunLoopCommonModes, but the apple document does not kindly explain, other than saying

How do you schedule a block to run on the next run loop iteration?

由 风流意气都作罢 提交于 2019-11-26 17:55:19
问题 I want to be able to execute a block on the next run loop iteration. It's not so important whether it gets executed at the beginning or the end of the next run loop, just that execution is deferred until all code in the current run loop has finished executing. I know the following doesn't work because it gets interleaved with the main run loop so my code might execute on the next run loop but it might not. dispatch_async(dispatch_get_main_queue(),^{ //my code }); The following I believe

NSTimer not firing when NSMenu is open in Swift

由 别等时光非礼了梦想. 提交于 2019-11-26 17:48:45
问题 I have a timer that runs to restart an alarm once it goes off. alarm = NSTimer.scheduledTimerWithTimeInterval( 60 * minutesConstant + secondsConstant, target:self, selector: Selector("endSession"), userInfo: nil, repeats:false) Its selector function sets a mode flag, and calls the original function that set the alarm with new minutes and seconds constants, and also sends a user notification that the session has restarted. I have a menu item that gets updated with the remaining time So I've

Understanding NSRunLoop

由 妖精的绣舞 提交于 2019-11-26 14:52:47
Can anyone explain for what is NSRunLoop ? so as I know NSRunLoop is a something connected with NSThread right? So assume I create a Thread like NSThread* th=[[NSThread alloc] initWithTarget:self selector:@selector(someMethod) object:nil]; [th start]; -(void) someMethod { NSLog(@"operation"); } so after this Thread finishes his working right? why use RunLoops or where to use ? from Apple docs I have read something but its not clear for me, so please explain as simple as it possible Jody Hagins A run loop is an abstraction that (among other things) provides a mechanism to handle system input

How do I create a NSTimer on a background thread?

由 不羁岁月 提交于 2019-11-26 07:56:09
问题 I have a task that needs to be performed every 1 second. Currently I have an NSTimer firing repeatedly every 1 sec. How do I have the timer fire in a background thread (non UI-thread)? I could have the NSTimer fire on the main thread then use NSBlockOperation to dispatch a background thread, but I\'m wondering if there is a more efficient way of doing this. 回答1: The timer would need to be installed into a run loop operating on an already-running background thread. That thread would have to

NSDefaultRunLoopMode vs NSRunLoopCommonModes

由 别说谁变了你拦得住时间么 提交于 2019-11-26 06:53:13
问题 Dear good people of stackoverflow, Just like the last time, I hereby bring up a question I recently stumble upon. I hope someone out there could shed some light on me. Whenever I try to download a big file behind UIScrollView , MPMapView or something, the downloading process gets halted as soon as I touch iPhone screen. Thankfully, an awesome blog post by Jörn suggests an alternative option, using NSRunLoopCommonModes for connection. That gets me look into detail of the two modes,

Understanding NSRunLoop

由 守給你的承諾、 提交于 2019-11-26 04:04:43
问题 Can anyone explain for what is NSRunLoop ? so as I know NSRunLoop is a something connected with NSThread right? So assume I create a Thread like NSThread* th=[[NSThread alloc] initWithTarget:self selector:@selector(someMethod) object:nil]; [th start]; -(void) someMethod { NSLog(@\"operation\"); } so after this Thread finishes his working right? why use RunLoops or where to use ? from Apple docs I have read something but its not clear for me, so please explain as simple as it possible 回答1: A
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