[iOS] Trouble with step value on Xamarin.iOS

[ghost]

Hi, I'm using the Xamarin nuget package on Android and iOS (not Forms). I want a slider with a step value of 10 going from 0 to 100 and I want to be able to freely changed the value of the slider and the snap to step value occurs only when I let go.

On Android, it is working nicely, but I have trouble on iOS. Even without step value, the slider control is "jittering", it is hardly moving freely and always stops in the movement, I wonder why is that?

When using the step value, I can stop between two steps too... This is how I set up the slider:
Slider.MinimumValue = 0.0f; Slider.MaximumValue = 100.0f; Slider.ShowTextAboveThumbs = true; Slider.StepVAlue = 10.0f; Slider.StepValueContinuously = false;

Do you have any ideas what is causing these problems on iOS?

Thanks for your help!

[halkar]

Thanks @CatherineSD, I'll investigate.

[ghost]

@halkar I just tested some more and for the "jittering", it seems that sometimes the movement is done correctly (smoothly without stopping), but I cannot do it on purpose. It is maybe a collider problem? Is it the lign or the thumb that catches the touch events?

[halkar]

@CatherineSD touch is handled by the control itself and then it checks which thumb was touched.

[halkar]

@CatherineSD, unfortunately, I can't reproduce the issue :( If you could share more information that would be helpful.

[ghost]

@halkar Thanks for your help. I will look into the problem again today myself. Would it helped if I send you a test project with the problem?

[ghost]

@halkar After many tests, I finally found the sources of the problem. For the step values, I had to simply replace Slider.StepValueContinuously = false; by Slider.StepValueContinuously = true; (maybe I didn't read the doc correctly for that one).

For the "jittering" problem, it is a bit more complex. It occurs because of another package I use in my project: Xamarin.SideBar (https://github.com/jdehlin/Xamarin-Sidebar). This package allows to add a sliding menu to the app. When I disable the menu, your slider is working fine, but when the menu is enabled (even when it is hidden), the slider is moving brokenly. I still don't know exactly what side effect from one or the other plugin is the cause. I will try to test some more.

[AbhishekHumagain]

@halkar For the issue of "jittering" you can resolve it on iSO by adding this on your master detail page.
IsGestureEnable = "False"
this helps you to fix the issue of slider jittering.