Creating a Timer

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This will create a timer to call the doSomething method on self in 5 seconds.


let timer = NSTimer.scheduledTimerWithTimeInterval(5,
                               target: self,
                             selector: Selector(doSomething()),
                             userInfo: nil,
                              repeats: false)

Swift 3

let timer = Timer.scheduledTimer(timeInterval: 1,
                                       target: self, 
                                     selector: #selector(doSomething()), 
                                     userInfo: nil, 
                                      repeats: true)


NSTimer *timer = [NSTimer scheduledTimerWithTimeInterval:5.0 target:self selector:@selector(doSomething) userInfo:nil repeats:NO];

Setting repeats to false/NO indicates that we want the timer to fire only once. If we set this to true/YES, it would fire every five seconds until manually invalidated.

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