nstimer

A third-party library provides a function I need to call every 100ms. Setting up a timer to do that works very well as long as my app is on foreground. When my app is on background timer works for a while but after a about a minute timer is called only after 10 second delay. The same happened when I created a separate thread with usleep-function. Is there any way I can keep timer running while my app is on background? Use beginActivityWithOptions:reason: to disable app nap for your application. You should try and re-architect to avoid these sorts of frequent timers, especially when your

Xcode 6.3.1 ARC Enabled, for iOS 8.3 I need help understanding a strange behavior that I encounter while trying to maintain a singleton shared timer in my application after it enters background. Previously I did not care for this NSTimer as it was updated with user location in the background using background location services. However, I would like to address the case where the user rejects location updates while in background or location updates all together. The location and the timer go hand in hand for my app. I worked through quite a bit of information in the following threads and website

I am trying to run a NSTimer on a thread using iPhone SDK 3.0. I think I am doing everything correctly (new runloop etc.). If I call [timer invalidate] on viewDidDissappear though I get this error: bool _WebTryThreadLock(bool), 0x3986d60: Tried to obtain the web lock from a thread other than the main thread or the web thread. This may be a result of calling to UIKit from a secondary thread. Crashing now... Program received signal: “EXC_BAD_ACCESS”. Here is my code: - (void)viewDidAppear:(BOOL)animated { [super viewDidAppear:animated]; [activityIndicator startAnimating]; NSThread* timerThread =

I have button that show up a modal view but i want that if the user click it he wont be able to use it again for 90 seconds. how can i do this? In the IBAction of the button disable the button and set a timer like this: self.button.enabled = false NSTimer.scheduledTimerWithTimeInterval(90, target: self, selector: "enableButton", userInfo: nil, repeats: false) And create the func called when the timer ends counting: func enableButton() { self.button.enabled = true } #Swift 3 Write this code where you want to disable button. self.buttonTest.isEnabled = false Timer.scheduledTimer(timeInterval: 90

I am new in iOS developement.When I press the stopwatch start button I want to display the timer like counter token effect.I have attached image for your reference.I have done to display secs and minutes but I dont know, How animate autoscroll effect? How can I do this? When the counter is moving it shouldn't jump from one number to another number, instead it should move from one number to next number smoothly, just like the petrol pump meter. Thanks You need to manually scroll tableView instead of scrollToRowAtIndexPath because this animation uses its own timer interval and its very difficult