Timer switching between countdown and counting up.

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Posted on by SydEng

Hi All,

Thanks for looking at my question.

It starts off easy. I want a timer that counts down from 12 mins to zero when the ON button is pressed but will count back up to 12 mins if the STBY button is pressed.

Mine will count down from 12 mins to zero, pause if I press STBY and continue to count down if ON is pressed again. What I want is if I press STBY that the timer immediately starts counting back up to 12 mins.

Timer Text =

If(timerComplete,
//Count up from 0 mins to 12 mins
Text(Time(0,(2),(Self.Value)/1000),"mm:ss"),
//Count down from 12 mins to 0 mins
Text(Time(0,0,(Self.Duration-Self.Value)/1000),"mm:ss"))

I'll continue to work on this and post if I find a solution.

Categories:

Building Power Apps

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RandyHayes 76,299 Super User 2024 Season 1 on at

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@SydEng

Change your STBY button OnSelect action to:

UpdateContext({_dir: -1})

And your On OnSelect action to:

UpdateContext({_dir: 1})

Then change your Timer Text property to:

With({_maxDuration: 60* 12, _cnt: Coalesce(lclCount, 0) + _dir}, UpdateContext({lclCount: If(_cnt<0, 0, _cnt>_maxDuration, _maxDuration, _cnt) }) )

This should provide what you are looking for.

I hope this is helpful for you.
SydEng 68 on at

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Dear RandyHayes,
Thank you so much!!
Yes, from a quick look I think you may have saved me more than a few hours of doing something that wouldn't end up as clean as your solution.
Kind regards, SydEng
RandyHayes 76,299 Super User 2024 Season 1 on at

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@SydEng

Happy to help!
SydEng 68 on at

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@RandyHayes
Hi Randy,
Ended up having limited time yesterday.
When I tried it I received "Behaviour function" complaints, maybe because there's no text output?
Your thoughts?
SydEng
Community Power Pla... Microsoft Employee on at

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Just adding what worked for me.
My Timer's Text Property:
Text(Time(0, 0, -(Self.Value - 3000)/1000), "ss")
And Duration:
3000

So it counts from 3 to 0 like, 03 > 02 > 01 > 00

Hope it helps too.

Thanx
SydEng 68 on at

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Hi MoosaLaghari,
Yes, that would work. Which is essentially the same as the standard count down timer of

Text(Time(0, 0, (Self.Duration - Self.Value)/1000), "ss")

PREVIEW
but what I wanted is if started with a timer counting up with a value of "x" and pressed a button the next value would be "x minus 1 sec". Let's say it was counting up and at 1:37. If I pressed the button the value becomes 1:36, 1:35, ....

I did have success with creating a stopValue variable saving the Timer.Value on the OnSelect of the button and then the timer Text = Text(Time(0,2,((StopValue*2) - Self.Value) / 1000),"mm:ss") but this only works in one direction, I want it in both directions.
SydEng
Community Power Pla... Microsoft Employee on at

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Hi SydEng,

Thank you, I think this standard count down you mentioned is rather more accurate.

But what if you created two timers (countUp/countDown) and positioned both at same point, and then show/hide the count up or count down timers on your button click.

MoosaLaghari
SydEng 68 on at

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With some good manipulation you can use just the one timer but the problem is not only do I need to swap the timer to count up using the current time as a starting point. I also need to adjust the timer duration and all at the same time when timer.Value can only be a positive value! I'm convinced there's a way to do it.