Xcode nstimer userinfo. And when you want to restart it, just create new timer. Should be something like this. Second, even if NSTimer could handle 1 ms intervals, you're not even asking it to do that: aTimer = [NSTimer scheduledTimerWithTimeInterval:. Button2 shows up great when Button1 is pressed, until the NSTimer kicks in and crashes the keyboard. Creating a standard tool in C, Using: [NSTimer scheduledTimerWithTimeInterval:2. 0+ watchOS 2. 2 (8E2002) and Swift coding language. @property (nonatomic, retain) IBOutlet UILabel *stopWatchLabel; - (IBAction)onStartPressed:(id)sender; Creating a Timer. Nov 19, 2013 · I am very close to completing my first iphone app and it has been a joy. While the user is providing input I'd like to "pause" i. [NSTimer scheduledTimerWithTimeInterval:5. 3. Dec 17, 2017 · I used Xcode and swift a few years ago and have now returned and I'm trying to make a timer that execute a procedure every second. But instead of milliseconds, I need to show 24 frames per second. In the pin menu select Equal Heights. 2 and it works but i get this one problem. You'll probably have to convert value to a Double as well. it works for me. Also, if you want to increment mainInt correctly, use mainInt++;. You don't have to use Selector: myTimer = NSTimer. This has worked 100% on the iPhone however on the iPad it will sometimes f Jul 30, 2015 · Here is a write up of how I got the inactivity timer to work for my app: Create a new file -> Objective-C class -> type in a name (in my case TIMERUIApplication) and change the subclass to UIApplication. Jun 8, 2015 · Just a simple task, but I'm in trouble. m file, implement the method stringValue. scheduledTimerWithTimeInterval(1, target: self, selector: "updateTimer:", userInfo: nil, repeats: true) Also, the timer passes itself to the selected method, so you can invalidate it inside the method if you need: timeLabel. An example: firstButton. Then do this. So using it to do anything at 1 ms intervals is bound to fail. I have tried this piece of code and it works perfectly, the timer stops when you press stopButton and when sec==0; #import "ViewController. timer = NSTimer. I have tried every solution and i cannot find any that have successfully worked. 0+ tvOS 9. Jul 13, 2011 · When used with a timer, the selector you pass should accept one argument, and that argument will be the timer which caused it. scheduledTimerWithTimeInterval(4, target: self, selector: "stopAfter4seconds:", userInfo: nil, repeats: false) It would appear, though, that you've implemented this stopAfter4seconds function inside the method that called presentViewController. . This function sends a local push notification. timerCurrentCount == 5 {. self. timeIntervalSinceReferenceDate() } } // calculates the elapsed time in Apr 4, 2016 · I'm trying to have a label subtract every second (a countdown of sorts) and when I make a variable "timer" and set it to NSTimer. May 13, 2014 · Ok, I'm trying to create a reset button that resets everything to the original state (ex: score, grade, etc. Feb 3, 2014 · I'm new in xcode and objective-c and trying to developing an app. Instance Property. Select the Start button and the Stop button. To do this, you need to implement methods which will be called by the timer to change the buttons. I didn't found ant property to add timer over UIToolBar. It passes itself as the parameter so that you know which timer was called. target:self. Feb 9, 2015 · In your . Provide details and share your research! But avoid …. Normal) NSTimer. scheduledTimerWithTimeInterval(timeInterval: 0. sleep(2); Or you may be able to use NSTimer like so. I'm trying to hide Button2 after a few seconds. m xcode found 3 problems with my code it says Assigning to 'CGPoint' (aka 'struct CGPoint') from in compatable 'int' twice and it says use of undeclared game loop. 0, target: self, selector: "countdown", userInfo: nil, repeats: true) it won't work. Trying to make a different way but it fails. text = String(Counter++) Feb 13, 2012 · baseDate = [NSDate date]; myticker = [NSTimer scheduledTimerWithTimeInterval:. Check the blog post for a clear explanation. var timer: DispatchSourceTimer? // note, unlike `Timer`, we have to Aug 20, 2013 · 2. In instruments, press "Mark Generation". 1, Swift:4. May 5, 2017 · NSTimer is the way to go. selector:@selector(countDown) userInfo:nil. I've been searching for a way to use a Timer in Swift 4 and looked at this article. Use valid to test whether the timer is valid. selector:@selector(doSomething) userInfo:nil. selector:@selector(targetMethod:) userInfo:nil. } else {. timer. userInfo. timer=[NSTimer scheduledTimerWithTimeInterval:1. Jul 10, 2010 · Now when I tried to update the label based on the timer, my app screws up. ) when it's hit. 0+ iPadOS 2. I'm trying to perform a segue after a timer has completed but I can't get the segue to perform. If you need your countdown method to be run in the background thread, you can use dispatch timers. If interval is less than or equal to 0. paused = true code then gives me a shorter gap. 0 target:self selector:@selector(targetMethod:) userInfo:nil repeats:NO]; Jun 22, 2015 · I recently downloaded Xcode 7 and Swift 2. h file: NSTimer *silenceTimer; @property (nonatomic, retain) NSTimer *silenceTimer; Then on the . scheduledTimerWithTimeInterval(1, target: self, selector: Selector("update"), userInfo: nil, repeats: true Nov 10, 2010 · Seems pretty straightforward to me -- just create an NSDate for midnight, calculate the time interval of 24 hours in seconds, and create the NSTimer with - (id)initWithFireDate:(NSDate *)date interval:(NSTimeInterval)seconds target:(id)target selector:(SEL)aSelector userInfo:(id)userInfo repeats:(BOOL)repeats Jun 22, 2015 · I want to change the timer every millisecond but it doesnt work as expected. If you just want a delay of 2 seconds you could use the sleep () function. [super viewDidLoad]; gameState = kStateRunning; [NSTimer scheduledTimerWithTimeInterval: 1. Jul 18, 2014 · Wait a little (more than 10 sec to have your timer finish at least once for example, or you can wait for more iterations if you know when the timer ends), then pop back to the previous view controller. Sep 14, 2010 · Multiple options here. h" @interface ViewController (){ NSTimer*_countdownTimer; int sec; } @property (nonatomic,weak) IBOutlet UILabel*_timerLabel; @property (nonatomic,weak) IBOutlet UIButton*_startButton; @property (nonatomic,weak) IBOutlet UIButton*_stopButton; @end Nov 9, 2012 · Have a problem with an application using AVCam. The application takes photos and saves them to the roll. Here's my code var timer = NSTimer() @IBOutlet weak var imageView: UIImageView! func buttonCo Nov 2, 2014 · I want to update the userInfo of the timer in the selector function every time the timer fires. userInfo: var timerDic = ["count": 0] Timer: Init: let timer = NSTimer. Now when application becomes active before that –(void)applicationWillEnterForeground: will called so in that method get total seconds application was in background ie (current time of application) - (time when application Feb 3, 2011 · @ Justin, I check it, name is correct, but I am having one warning at scheduledTimerWithInterval, this is warning "'NSTimer' may not respond to '+scheduledTimerWithInterval:target:selector:userInfo:repeats:' " Aug 20, 2013 · im making a simple game on Xcode and i decided to use a nstimer in my . #include<unistd. scheduledTimerWithTimeInterval(8. Set up a variable that holds the velocity of the wall(s). target: self. If true, the timer will repeatedly reschedule itself until invalidated. Oh, and you don't need to retain the timer. By clicking on the warning, Xcode offers a quick fix to the code by adding "Selector", but then I still get the same warning: Oct 25, 2010 · userInfo is a pointer that you can set to any object (or collection) you like and that will be passed to the target selector when the timer fires. I have the following code in a Timer. Here's my code: NSTimer *t = [NSTimer scheduledTimerWithTimeInterval: 1. 0. Upon opening the app it takes the pictures perfectly and saves them just the way it should. text = @”00:00:00:000″; resetHasBeenPushed = YES; Now you need to set it back to NO, at some point, and that might be done in the start method: Sep 5, 2010 · Your missing a trailing colon on your selector name. timerFire is different from timerFire:. NSTimer does not pass the userInfo information as the parameter to the selector. Try that, and if you have problems, update your question with the code you're trying and tell us what happens with it. Edit: Sep 13, 2014 · NSTimer needs a run loop, cannot be scheduled from a background global worker thread (unless you schedule it on mainRunLoop, or manually create a run loop on some background thread). However, when it resumes it gives a larger gap. code: . You pass the event in that parameter, and retrieve it using the userInfo method on the timer. If we set this to true/YES, it would fire every five seconds until manually Apr 25, 2012 · Hi I have a timer that should count from 12:00 minutes to 0:00 in an iphone app! But when it starts it counts like this; 11:58 11:56 11:54 11:52 it is counting 2 seconds on every tick. timeIntervalSinceReferenceDate() //Find the difference between current time and start time var elapsedTime :NSTimeInterval = currentTime - startTime //calculate the minutes in elapsed time. Most important: Your selector is then methodB: rather than methodB. 0 target: self selector: @selector (doSomething) userInfo: nil repeats: NO]; Setting repeats to false/NO indicates that we want the timer to fire only once. - (void) methodA. Apr 5, 2016 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. 0+ visionOS 1. Apr 10, 2011 · So rather than changing the interval of your NSTimer, it may be better to change the distance moved. Any help is great Dec 11, 2014 · NSTimer* timer; } @property (nonatomic,retain) NSTimer* timer; and code for this timer in TimerController. Use the timerWithTimeInterval:invocation:repeats: or timerWithTimeInterval:target Language: API Changes: None. 2. Now the problem is that it can only do one of those things at the same time. Jun 3, 2012 · When application goes in background, In –(void)applicationDidEnterBackground: application delegate method add current counter value and current time in nsuserdefault. 01, target: sender, selector: "updateTime", userInfo: nil, repeats:true) startTime = NSDate. // check for max execution count of timer. The difference is the run loop mode . In the app, I have 5 theme pages, each pages contains a table view to another 3 sub-pages. 3 target:self. Dec 2, 2013 · Ok added the code. EDIT: Simple Example: Set up the timer: NSTimer* timer = [NSTimer scheduledTimerWithTimeInterval:2. A block to be executed when the timer Feb 14, 2014 · moveObjectTimer - [NSTimer scheduledTimerWithTimeInterval:0. Wherever you want to have the value of your timer, call the method stringValue. 0+ Mac Catalyst 13. NSTimer. To do this, you must add the Key called "Required Background Modes" on Xcode 4, then as a value, select "App registers for location updates". Documentation. Then add the countDown method itself: Apr 20, 2015 · 77. The number of seconds between firings of the timer. However, every time the reset button is hit, the timer goes faster each time. Mar 13, 2012 · I have created a NSTimer In Xcode 4. setTitle("Text", forState: UIControlState. 001. Jun 3, 2019 · はじめにこんにちはアプリ内で利用する機会はそれほどでもないのですが、定期実行するTimerについて調べてみたのでメモとして書いてみたいと思います。(Xcode: 9. Or, easier, just schedule the timer on the main run loop. m file, I declared it like so: Jul 20, 2014 · I know that there is no way to pause a timer using NSTimer. 0, target: self, selector: "timerFire:", userInfo: nil, repeats: true) The mistake is that you're missing the colon in the selector name. All it does is on button press - counts from 60 to 0 seconds. It's good for drawing (swapbuffer,glFinish and etc) but some processes in my program Dec 12, 2014 · I am trying to implement method that affect UILabel text each every 1 seconds , It is going to be a reminder text like " You can skip ad in 5,4,3,2,1 skip now >>" My method works fine except in 2 Jun 21, 2015 · I made a timer and then I added a slider with a label that presented its value. Mar 9, 2013 · Declare NSTimer *timer and int remainingCounts, then add. 0/60 target:self selector:@selector(gameLoop) userInfo:nil repeats:YES]; rockVelocity = CGPointMake Jul 15, 2011 · first part /getautodisplaydelay/ get delay for NSTimer how often will take place a request getnewmessagescount wich return number of new messages if it not null must be shown NSLocalnotification – Ruslan . I have a timer declared like so in my . Your method signature should be: func timerFire(timer: NSTimer) {} And your timer setup should be: NSTimer(timeInterval: 1. 0 target:self selector:@selector(fireMethod) userInfo:nil repeats:NO]; And in your class you would have a method defined as. scheduledTimerWithTimeInterval(showCodeDelay, target: self, selector: "showCode(counterCode1)", userInfo: nil, repeats: false); Nov 19, 2012 · That will come handy if you want the timer to stop firing based on some conditions according to your program logic. repeats:YES]; remainingCounts = 60; to the place where you want to start the countdown. Sep 29, 2014 · var timer = NSTimer. 5, target: self. NSTimeInterval interval = [baseDate timeIntervalSinceNow]; The number of seconds between firings of the timer. scheduledTimerWithTimeInterval(1, target: self, selector: Selector("update"), userInfo: nil, repeats: true) } There is more to my code, but this the the basic NSTimer setup that fires at "update" which does the y value increasing. I am trying to add running timecode using the current time via an NSTimer displaying the current time (NSDate) on a UILabel. 05 sec in a function called moving. //NSTimer calling Method B, as long the audio file is playing, every 5 seconds. In the align menu with both Start and Stop still selected, select Top edges, and make sure the value is 0. 0 and trying to implement Swift NSTimer in Custom Keyboard. Jan 19, 2012 · There is no pause/resume functionality built into NSTimer, so you have to implement something along the lines of: //THIS IS PSEUDOCODE //use timer to update the ui only, store start date (NSDate) and time interval elapsed (NSTimeInterval) //this is called when the timer is not running, nor paused - a sort of 'first run' function - onTimerStart: { //zero the time elapsed time_passed = 0; //save Jun 14, 2015 · Sorted it! The problem was in the syntax for setting the selector function and passing the parameters required for the function to work. Can any one help and tell me how to do I have a NSTimer running every 0. 0 seconds. NSDate is working fine for me, showing hour, minute, second, milliseconds. idleTimer = [NSTimer scheduledTimerWithTimeInterval:maxTime target:self selector:@selector(checkIfIdleTimerExceeded:) userInfo:nil repeats:NO]; And checkIfIdleTimerExceeded should be like:-(void) checkIfIdleTimerExceeded :(NSTimer*)timer { //Do your all process and invalidate after completion [timer invalidate]; } Apr 17, 2014 · You can keep your NSTimer in a variable and stop the timer using the invalidate method. 01 target:self selector:@selector(showActivity) userInfo:nil repeats:YES]; } After that, change your showActivity method to look like this: -(void)showActivity {. Jan 30, 2016 · 1. Set up your timer with a sane value (1/60 is a good choice). repeats:NO]; Setting the repeats parameter to false/NO indicates that we want the timer to fire only once. enabled = NO; // 60 milliseconds is . view!. Here is my swift 4 code. In the pin menu, select Equal widths and Equal Heights. The receiver's userInfo object. iOS 2. If its Jun 30, 2012 · mainInt is only incremented when you press the startTimer button, so that does you no good in timerStop. 0 target:self selector:@selector(displayTime) userInfo:nil repeats:YES]; and in displayTime method I will go for timing calculation. 1, target: self, selector: @selector(loadSeries:), userInfo: _response, repeats: false) That, howver, returns errors that NSTimer doesnt have the property scheduledTimerWithTimeInterval and that Target is undeclared. 问题描述： Xcode8. selector:@selector(loadWelcomeView) userInfo:nil repeats:NO Oct 15, 2015 · I am making a timer that will call a function repeatedly with swift 2, Xcode 7. Hope it helps (and adds to icoders answer do not intent to copy) - (void) startTimer. However, you can pass data to the called method using the userInfo parameter. 2)至らぬ点などコメント頂けたら幸いです… Nov 23, 2014 · @IBAction func Stopwatch (Sender:UIButton) { var startTime = NSTimeInterval() func updateTime(timer:NSTimer) { //Find Current TIme var currentTime = NSDate. Asking for help, clarification, or responding to other answers. repeats: true) { timer in. Apr 19, 2012 · What's not working? This looks correct, except that it doesn't make any sense to pass self as the timer's userInfo argument. -(void)viewDidLoad {. //Start playing an audio file. 0, this method chooses the nonnegative value of 0. - (IBAction)onResetPressed {. delayTimer = [NSTimer scheduledTimerWithTimeInterval:1. 0001 seconds instead. I test out my code in xcode and when the the timer first ticks (in this case after 10 seconds) the app crashes and I get an error, although the build succeeded. Cannot find any way to create the timer without the dangling timer variable. repeats:YES]; But if I try enable v-sync: my timer automatically switches to 60fps speed. selector:@selector(handleTimer:) userInfo:@"someString" repeats:NO]; Dec 4, 2014 · timer = NSTimer. m class. block. lengthOfTime. @property(nullable, readonly, retain) id userInfo; Discussion. scheduledTimerWithTimeInterval(timeInterval, target: self, selector: Selector("onTimer:"), userInfo: nil, repeats: true) Mar 22, 2016 · As you can see Xcode 7. override func viewDidLoad() {. If false, the timer will be invalidated after it fires. [NSTimer scheduledTimerWithTimeInterval:. UILabel *stopWatchLabel; NSTimer *stopWatchTimer; // Store the timer that fires after a certain time. Note that you can suspend and resume GCD timers, DispatchSourceTimer. target:view. 0+. This stopAfter4seconds, itself, must be a method, not NSTimer * timer = [NSTimer scheduledTimerWithTimeInterval: 5. So replace :Int with :Double and it should work. Apr 25, 2016 · I am using a NSTimer and then invalidate it when I have paused the game. 05 Nov 5, 2011 · I'm using an old 12" Powerbook for the brains of a mobile robot platform and I'm having trouble getting the NSTimer to compile in XCode 3. 1 在使用5S/6 系统8或9时会崩溃，报以下错误： +[NSTimer scheduledTimerWithTimeInterval:repeats:block:]: unrecognized selector sent to class 0x1a15. valid { timer = NSTimer. 3 now gives a warning "No method declared with Objective-C selector". So my This will create a timer to call the doSomething method on self in 5. [NSTimer scheduledTimerWithTimeInterval:2. repeats:YES]; [myTimer invalidate]; edited Apr 17, 2014 at 14:01. Jun 18, 2012 · I have a repeating timer that runs down a clock. Please refer to the Timer documentation, also available right in Xcode. count1 = 20 Nov 29, 2015 · You want to use arc4random_uniform() to create a random number, and then scheduledTimerWithTimeInterval:target:selector:userInfo:repeats: to fire your timer at a random time in the future. You now have a instant representation of the memory at this time. selector:@selector(render:) userInfo:nil. selector:@selector(timerTicked:) -- added after questioner comment Oct 22, 2015 · For creating mainloop in my opengl app for Mac I'm using NSTimer: [NSTimer scheduledTimerWithTimeInterval:. invalidate() // invalidate the timer. This app also works with NSTimer. 0 target:self selector:@selector(targetMethod:) userInfo:nil repeats:NO]; This will create a timer that is fired after 2. May 27, 2018 · NSTimer. 0 seconds and calls targetMethod: on self with one argument, which is a pointer to the NSTimer instance. h. Creates a timer and schedules it on the current run loop in the default mode. This will create a timer to call the doSomething method on self in 5. NSDate *startDate; // Stores the date of the click on the start button. scheduledTimerWithTimeInterval(theDelay,target:self,selector:"showPlayerOutline",userInfo:nil,repeats:false) Feb 12, 2012 · I have a timer class set up that is basically handling all of count down timer logic. 06 seconds. scheduledTimerWithTimeInterval(0. 2 I set a timer with the following code. Dec 7, 2008 · I'm using an NSTimer to do some rendering in an OpenGL based iPhone app. Your argument is an Int. h>. 06 target:self selector:@selector(goToSecondButton:) userInfo:nil repeats:NO]; Jul 20, 2014 · NSTimer *timer = [NSTimer timerWithTimeInterval:(timeInterval - _elapsedTime) target:self selector:@selector(timerFireMethod) userInfo:nil repeats:YES]; May 20, 2012 · I have declared the NSTimer variable, but XCode thinks it's unused. If its Jul 15, 2012 · I want a button "getcoins" to set off a timer then trigger an if statement so that if the value of "_currentField" //text field is greater than or equal to 1000 run the lines of code I wrote. selector:@selector(updateLabelDisplay) userInfo: nil repeats:YES]; I also have an updateLabelDisplay function that determines how many times the timer has ran and then subtracted that Apr 26, 2017 · Xcode:+[NSTimer scheduledTimerWithTimeInterval:repeats:block:]: unrecognized selector sent to class 0x1a15. In Swift 1. Feb 29, 2012 · So use a BOOL like this: First declare the iVar: BOOL resetHasBeenPushed; Initialize the value to NO. A block to be executed when the timer Aug 18, 2010 · As iCoder says it has to be invalidated in viewWillDisappear. torch, selector: "strobeTimerFired:", userInfo: nil, repeats: true) There are three ways to create a timer: Use the scheduledTimerWithTimeInterval:invocation:repeats: or scheduledTimerWithTimeInterval:target:selector:userInfo:repeats: class method to create the timer and schedule it on the current run loop in the default mode. stopWatchLabel. scheduledTimer no longer exist ans I can't find any documentation on how you make a timer in this new version of Xcode. var timer = NSTimer. I use an NSTimer *delayTimer to delay the loading of child view because I fade in the detail view using animation. Try this: Nov 21, 2017 · 6. e. lengthOfTime); [NSTimer scheduledTimerWithTimeInterval:1 Nov 5, 2014 · I regret to inform you that NSTimer is a very poor tool for games or any other type of program where you are trying to time many things simultaneously and accurately. repeats. I added the following just to make sure. I know i have to store the date and call it again. Please note that methods in Objective C need a - or + in front of them. If I comment out the invalidate and just use the scene!. Jun 27, 2014 · self. But with this new swift and Xcode 9. You need a closing bracket after your viewDidLoad method. In addition to this, the timer does not respond to the invalidate command, or even releasing it or setting it to nil. h file, write the prototype of the method stringValue (in my comment above) In your . m. Oct 21, 2016 · NSTimer. 001, target: self, selector: Selector("advanceTimer:"), userInfo: nil, repeats Aug 1, 2022 · To stop a repeated timer in Swift is very simple. let timer = NSTimer. I would like to set up a timer in some of pages for calculating how much time user spend in that page. Nov 23, 2014 · class func scheduledTimerWithTimeInterval(ti: NSTimeInterval, target aTarget: AnyObject, selector aSelector: Selector, userInfo: AnyObject?, repeats yesOrNo: Bool) -> NSTimer you notice that the method doesn't have an external name for the first parameter (that's default for methods), so you don't have to use the timeInterval external name. 0, target: self EDIT : second block of code, the NSTimer still runs on the main thread, still on the same run loop as the scrollviews. Do not access this property after the timer is invalidated. lengthOfTime = [NSNumber numberWithInt:self. We stop them with invalidate(). Apr 24, 2015 · Select the Pizza Timer label and the Start button. Jul 29, 2015 · 1. Jul 1, 2015 · The interval should be a NSTimeInterval which is an alias for Double. if self. intValue - 1]; NSLog(@"%@",self. You've made a simple, yet common mistake. Oct 9, 2012 · First, according to the NSTimer docs, that class has an effective resolution of about 50-100 ms. Like the following: NSTimer * myTimer = [NSTimer scheduledTimerWithTimeInterval:110. Any help is appreciated, Or you can omit Selector() and just do: NSTimer. I'm using Xcode Version 8. Inside moving I want a number to count up and show it into a label and at the same time make an object move. 0f target:self selector:@selector(checkForLocation) userInfo:nil repeats:YES]; It is worth noting that I have NSTimer declared inside of viewDidAppear. What I want to do is have my last label (Moneyadded) show a multiplication of the slider value by the current amount of seconds with NStimer. I changed: var nsTimerObject:NSTimer = NSTimer. I have a modal dialog box that pops up and requests user input. swift. My timer variable is declared outside the viewDidLoad() in ViewController. How to init NSTimer with declared previously variable? Neither var nor let helps. Jul 15, 2012 · I want a button "getcoins" to set off a timer then trigger an if statement so that if the value of "_currentField" //text field is greater than or equal to 1000 run the lines of code I wrote. 0, target: self, selector: Selector("didTimeout"), userInfo: nil, repeats: false) I do not use the timer constant anywhere I just schedule a timer. A timer class does provide an instance method called invalidate(). here is my project in the simulator when i press start it starts and when i press stop it stops and when its stoppe Dec 16, 2011 · In a detail view in UISplitView, I want to add a subview to its UINavigationController 's child view. {. 0+ macOS 10. [NSTimer scheduledTimerWithTimeInterval:60. 03 target:self selector:@selector(moveObject) userInfo:nil repeats:YES]; You put - instead of = Change the above code to : May 31, 2017 · I have come across a lot of questions similar to this, but many were for older versions of Xcode, or simply did not work. We don't pause/resume Timer instances. [self stopTimer]; timer = [NSTimer scheduledTimerWithTimeInterval: 5. Button2. scheduledTimerWithTimeInterval(1. 原因分析： 搞了 半天，发现是个低 Oct 17, 2017 · 9. Jan 1, 2015 · var startTime = NSTimeInterval() var timer = NSTimer() //starts the timer func startTimer(sender: AnyObject) { if !timer. You may have to manually type this in the subclass field. You should set it up as follows: NSTimer. During the clock running down I call stopTimer and the clock should stop. 2, NSTimer and Timer. Using Swift 2. I am using an nstimer to count down but it seems to be counting down in 4s instead of 1s here is my code can you help me fixs this: func failsafeon() {if failsafeper == "off" {if currentamountofwrong == 0 {currentamountofwrong = currentamountofwrong + 1. scheduledTimerWithTimeInterval(1, target: self , selector: Selector("notification"), userInfo: nil, repeats: true) Apr 8, 2015 · Would anyone be able to let me know as to why NSTimer is firing inconsistently? Here is the line where I have declared my timer. timer = [NSTimer scheduledTimerWithTimeInterval:1. ah xt kk gu mu ae sm ed wh bf