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How to enable "Snap to Tick" for a slider in App Designer?

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Farzam Malmir
Farzam Malmir on 21 Feb 2019
Commented: Jeff Severino on 2 Jul 2019
Hi, I want to know how to make a slider move discretely rather than continuously. As an example, I want the slider to jump from 1 to 2 when I move it. In other words, I need to enable the "Snap to Tick" feature.
Thanks in advance.

  2 Comments

Kevin Chng
Kevin Chng on 22 Feb 2019
slider.png
What is yours 'snap to tick'? Do you have photo to illustrate it?
Farzam Malmir
Farzam Malmir on 22 Feb 2019
In the same slider you posted, for example I want the slider handle sits on the tick intervals not between them. for example I want 1, 2, 3 ... rather than 1.48

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Answers (1)

Kevin Chng
Kevin Chng on 22 Feb 2019
Untitled.png
Is it what you expect? If you are using app designer, on your left hand side bottom, there is configuration you may edit. Empty the minor tick, and modify the major tick to 1,2,3,4,5.
Don't forgot to change the limit as well to 0,5

  3 Comments

Farzam Malmir
Farzam Malmir on 24 Feb 2019
Thanks Kevin, but as you see in the screenshot, I have already set up the configuration. However, when I run the app, the handle can sit everywhere rather than just on the intervals.
2.jpg
I use R2018a version.
1.jpg
Kevin Chng
Kevin Chng on 25 Feb 2019
The only way i can think about it is to create a callback function, then use the round off method to readjust the value of slider if user move the handle to the place between intervals.
Create a callback function for your slider
value = app.Slider.Value;
app.Slider.Value=round( value / 20 ) * 20;
You may change the value of 20 to 2, if the interval is 2.

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