Time Took Variable in Swift

Question

Overview: I am trying to create quiz game where someone has to answer questions in a certain amount of time. They have 10 seconds to solve each question or it will move to the next controller. The problem is that whenever I click next question before the full time is up it keeps counting down to 10. What should happen is it should stop counting time for that question.

So far I have implemented the following code to try to make this work. var time = 0 and first created a global variable called time. Then I created timer code as following, var count = 10 @IBOutlet var countDownLabel: UILabel!

Then I create a label that will tick down every second until it reaches 0. Code as follows:

if(count > 0) { countDownLabel.text = String(count) count -= 1 time += 1 } print (time) if (count <= 0 ) { count = 10 self.performSegue(withIdentifier:"NextQuestion1", sender: nil) }

Summary: Everytime count goes down time should go up. Then at the end it will display the time they. I would gladly appreciate some help on this problem.

Fangming · Accepted Answer · 2017-07-13 17:12:06Z

2

When you click on the next button, you need to invalidate the timer so that it will stop counting.

Say you created your timer in this way

let timer = Timer.scheduledTimer(timeInterval: 10, target: self, selector: #selector(YourSegueFunction), userInfo: nil, repeats: false)

Then when you click on the next button, use the following line of code to stop the timer

timer.invalidate()

Here is the demo

edited Jul 13, 2017 at 17:12

answered Jul 13, 2017 at 2:31

Fangming

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5 Comments

josh Over a year ago

Is there way to say timer.invalidate() when they press the button?

Fangming Over a year ago

@josh What do you mean? You can directly call this method in the button click function to stop the timer

josh Over a year ago

Can you explain how you can call this in button click function? I need to stop the timer if they click they go to the next question.

Fangming Over a year ago

@josh Undated my answer with timer stopped in button click action

josh Over a year ago

Ok Got it! Let me try that. Thanks!

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