nstimer Questions
21
Solved
How can I make a countdown with an NSTimer using Swift?
6
Solved
I am new to iOS programming. I am working on words matching game. In this game I need to implement time counter which shows minutes and seconds. I want when my game is started my timer to start wit...
Porkpie asked 19/5, 2012 at 7:17
17
Solved
I tried
var timer = NSTimer()
timer(timeInterval: 0.01, target: self, selector: update, userInfo: nil, repeats: false)
But, I got an error saying
'(timeInterval: $T1, target: ViewController, se...
Contradistinction asked 3/6, 2014 at 5:9
3
Solved
I am trying to calculate the time it takes a vehicle to go between two checkpoints. I have setup the following timer to achieve this.
func startTimer() {
if hasStarted == true && timerSta...
2
Solved
I have a timer that runs to restart an alarm once it goes off.
alarm = NSTimer.scheduledTimerWithTimeInterval(
60 * minutesConstant + secondsConstant,
target:self,
selector: Selector("endSessi...
2
I'm trying to use NTTimer but it doesn't work.
It is started here:
timer = NSTimer.scheduledTimerWithTimeInterval(0.003, target: self, selector: "openFrameAnimation", userInfo: nil, repeats: true...
7
Solved
I have referred to countless other questions about a press-and-hold button but there aren't many related to Swift. I have one function connected to a button using the touchUpInside event:
@IBActio...
4
Solved
I'm creating a countdown timer that counts down to an NSDate set in a UIDatePicker. I have a label that shows the date we're counting down to and that works fine.
What I'm also trying to add is la...
9
Solved
I'm developing an Android 2.3.3 application and I need to run a method every X seconds.
In iOS, I have NSTimer, but in Android I don't know what to use.
Someone have recommend me Handler; another...
24
Solved
I'm trying to create an NSTimer in Swift but I'm having some trouble.
NSTimer(timeInterval: 1, target: self, selector: test(), userInfo: nil, repeats: true)
test() is a function in the same clas...
6
Solved
I have two NSTimers in my iPhone app.
DecreaseTimer works fine, but TimerCountSeconds crashes when I call [timerCountSeconds isValid] or [timerCountSeconds invalidate]. They are used like this:
-(...
Caligula asked 11/9, 2010 at 19:32
10
Solved
I'm using an NSTimer like this:
timer = [NSTimer scheduledTimerWithTimeInterval:30.0f target:self selector:@selector(tick) userInfo:nil repeats:YES];
Of course, NSTimer retains the target which ...
Croaker asked 29/5, 2013 at 18:54
8
Solved
While a UIScrollView (or a derived class thereof) is scrolling, it seems like all the NSTimers that are running get paused until the scroll is finished.
Is there a way to get around this? Threads?...
Swine asked 3/3, 2009 at 3:40
13
Solved
Is it possible to determine whether my UIView is visible to the user or not?
My View is added as a subview several times into a UITabBarController.
Each instance of this view has an NSTimer that up...
Sam asked 8/10, 2009 at 10:24
5
Solved
I have this problem for a few days now and I don't get what I am doing wrong.
My application is basically just creating some timers. I need to stop them and create new ones. But at the moment sto...
3
Solved
I add timer like this
tim=[NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(repeatTim) userInfo:nil repeats:YES];
[[NSRunLoop mainRunLoop] addTimer:tim forMode:NSDefaultRun...
Haimes asked 11/9, 2013 at 15:21
10
Solved
I have a view controller that uses an NSTimer to execute some code.
What's the best way to detect when the app is going to the background so I can pause the timer?
4
I want to stop this timer and then restart it from where I stopped it.
secondsTimer = Timer.scheduledTimer(timeInterval: 1.0, target: self, selector: #selector(addSeconds), userInfo: nil, repeats:...
11
Solved
How do people deal with a scheduled NSTimer when an app is in the background?
Let's say I update something in my app every hour.
updateTimer = [NSTimer scheduledTimerWithTimeInterval:60.0*60.0
...
Langbehn asked 7/12, 2011 at 13:13
8
Solved
I am creating and firing a NSTimer with:
ncTimer = [NSTimer scheduledTimerWithTimeInterval:1.0
target:self
selector:@selector(handleTimer:)
userInfo:nil
repeats:YES];
[ncTimer fire];
AND
- ...
5
Solved
I need to call a method when my app starts and then call the same method every 5 seconds.
My code is pretty simple:
// Call the method right away
[self updatestuff:nil]
// Set up a timer so the...
9
Solved
I want to be able to schedule three small events in the future without having to write a function for each. How can I do this using NSTimer? I understand blocks facilitate anonymous functions but c...
Klink asked 17/2, 2013 at 19:7
10
Solved
Does any one know when is the best time to stop an NSTimer that is held reference inside of a UIViewController to avoid retain cycle between the timer and the controller?
Here is the question in m...
Godric asked 13/8, 2010 at 15:28
1
Solved
Normally, I would use an optional variable to hold my Timer reference, as it's nice to be able to invalidate and set it to nil before recreating.
I'm trying to use SwiftUI and want to make sure I'm...
4
Solved
I need a long running task to be done in background as well as in foreground. This updates the core data. So to maintain UI responsive I created an another thread where I use different managedObjec...
Crossruff asked 14/3, 2013 at 9:26
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