nstimer

I have created an GKSession and as its object is created, it starts search for availability of devices, as - (void)session:(GKSession *)session peer:(NSString *)peerID didChangeState:(GKPeerConnectionState)state { I want to call this method after each 60 seconds, what should I do? Use NSTimer NSTimer* myTimer = [NSTimer scheduledTimerWithTimeInterval: 60.0 target: self selector: @selector(callAfterSixtySecond:) userInfo: nil repeats: YES]; After each 60.0 second , iOS will call the below function -(void) callAfterSixtySecond:(NSTimer*) t { NSLog(@"red"); } Once you set NSTimer to

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 with 3 minutes. Now I want to decrease this timer in reverse direction with seconds. my code just work for seconds..here is my code: secondsLeft--; int seconds = (secondsLeft %3600) % 60; Timerlbl.text = [NSString stringWithFormat:@"%02d",seconds]; if (seconds==0) { UIAlertView *pAlert = [[UIAlertView alloc]initWithTitle:@"Sorry!!" message:@"TimeOver" delegate:self cancelButtonTitle:@"OK"

hello I am developing small gameApp. I need to pause the timer,when user goes to another view [say settings view]. when user comes back to that view , I need to resume the timer. can anybody solve this issue ... Thanks in Advance... You can't pause a timer. However, when the user goes to the settings view, you can save the fireDate of the timer and also the current date. After this you invalidate the timer and let the user do his/her stuff. Once he/she switches back to the game, you create a new timer object and set the fire date to the old fire date plus the time the user was in the menu

This is my code for an iPhone stopwatch. It works as expected and stops and resumes when the buttons are clicked. When I hit "Stop", however, the timer won't stop running in the background, and when I hit "Start" to resume it, it will update the time and skip to where it is currently instead of resuming from the stopped time. How can I stop the NSTimer ? What is causing this to occur? @implementation FirstViewController; @synthesize stopWatchLabel; NSDate *startDate; NSTimer *stopWatchTimer; int touchCount; -(void)showActivity { NSDate *currentDate = [NSDate date]; NSTimeInterval timeInterval

My app runs constantly in kiosk mode. Once every 24 hours at a specific time I need to sync some data from core data to a web service. I know how to do the sync piece but I don't know how to schedule the app to make the sync call at a specific time each day e.g. at 02:45 am. Is it possible to do something like this when an app is running constantly? Use Local Notifications. Here is a tutorial: http://www.icodeblog.com/2010/07/29/iphone-programming-tutorial-local-notifications/ Hope this helps u to start... This as well: Local Notifications Background Tasks Figured this out thanks to prompts

How can I make a countdown with an NSTimer using Swift? Bigman Question 1: @IBOutlet var countDownLabel: UILabel! var count = 10 override func viewDidLoad() { super.viewDidLoad() var timer = NSTimer.scheduledTimerWithTimeInterval(0.4, target: self, selector: Selector("update"), userInfo: nil, repeats: true) } func update() { if(count > 0) { countDownLabel.text = String(count--) } } Question 2: You can do both. SpriteKit is the SDK you use for scene, motion, etc. Simple View Application is the project template. They should not conflict In Swift 5.1 this will work: var counter = 30 override func

class ViewController: UIViewController { override func viewDidLoad() { super.viewDidLoad() var timer = NSTimer.scheduledTimerWithTimeInterval(1, target: self, selector: Selector("update"), userInfo: nil, repeats: true) } func update() { println("Something cool") } } It's ok for the Simulator ，I will get continuous "Something cool" through I tapped the home button. But it worked out when I debug the app with my iPhone. I did't get anything when I tapped the home button and make my app run background. Someone told me I can play a long blank music to make my App run in the background.But I don't

I've been using selectors for a while, and even after migrating to Swift I was able to use them without issues. That's how I was using on Swift 2 without issues until I updated Xcode to version 7.3: As use can see I use selectors with NSTimer. This is the action that is called: func Start () { } As you can see Xcode 7.3 now gives a warning "No method declared with Objective-C selector". By clicking on the warning, Xcode offers a quick fix to the code by adding "Selector", but then I still get the same warning: Since Swift 2.2 / Xcode 7.3 there is a new way to use a selector: Selector("funcName