iOS 8 Programming with Swift by Lyn. Kevin

Author:Lyn., Kevin
Language: eng
Format: epub
Published: 2015-04-23T16:00:00+00:00

Now you can play around with the timer by starting it and pausing it.

Clearing the NSTimer

For us to clear the counter, the following needs to be done:

Pause the NSTimer from firing.

Reset the counter to normal.

Clear the countingLabel.

Note that the above order must be adhered to, otherwise the objective will not be achieved. The following should be the appearance of the IBAction of the clearButton:

@IBAction func clearButton(sender: AnyObject) {

tm.invalidate()

counter = 0

countingLabel.text = String(counter)

}

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