How can I pause and resume NSTimer.scheduledTimerWithTimeInterval in swift?
To Start:
timer = NSTimer.scheduledTimerWithTimeInterval(1.0, target: self, selector: Selector("updateView"), userInfo: nil, repeats: true)
To Resume:
timer = NSTimer.scheduledTimerWithTimeInterval(1.0, target: self, selector: Selector("updateView"), userInfo: nil, repeats: true)
To Pause:
timer.invalidate
This worked for me. The trick is that do not look for something like "timer.resume"
or "timer.validate"
. Just use "the same code for starting a timer" to resume it after the pause.
You need to invalidate it and recreate it. You can then use an isPaused
bool to keep track of the state if you have the same button to pause and resume the timer:
var isPaused = true
var timer = NSTimer()
@IBAction func pauseResume(sender: AnyObject) {
if isPaused{
timer = NSTimer.scheduledTimerWithTimeInterval(0.1, target: self, selector: Selector("somAction"), userInfo: nil, repeats: true)
isPaused = false
} else {
timer.invalidate()
isPaused = true
}
}