Pan/Zoom and Screen Tap is broken on iOS.

TeeChart for Microsoft Visual Studio .NET, Xamarin Studio (Android, iOS & Forms) & Monodevelop.
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TLC
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Pan/Zoom and Screen Tap is broken on iOS.

Post by TLC » Mon Feb 01, 2021 8:34 pm

On iOS, pan and zoom doesn't respond well and often doesn't work. Tapping the screen to select a point, via the NearestPoint tool, doesn't work unless you drag a bit after tapping the screen.

This doesn't occur on Android; it is very smooth on all the aforementioned interactions.

Note: I'm using TeeChart v4.2020.5.28 and Xamarin.Forms v5.0.0.1931.

This may be related to this issue but I'm not certain so I created another ticket.

if needed, I may be able to get a screen capture video for the issues.

TLC
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Re: Pan/Zoom and Screen Tap is broken on iOS.

Post by TLC » Tue Feb 02, 2021 9:00 pm

I can't upload the files; the site says too large of a file. even though they only 4.6 MB and 13.1 MB.

Pep
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Re: Pan/Zoom and Screen Tap is broken on iOS.

Post by Pep » Thu Feb 04, 2021 11:35 am

Hi,
ok, thanks for all the information.
Not sure if the problem also happens by using the TeeChart for Xamarin.Forms 4.2020.5.28 version with an older version of Xamarin.Forms.
We're working on this and hope we can have a new maintenance release soon that fixes these problems.

TLC
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Re: Pan/Zoom and Screen Tap is broken on iOS.

Post by TLC » Wed Mar 24, 2021 6:43 pm

With Xamarin.Forms v4.8.0.1821 and Steema.TeeChart.NET.Xamarin.Forms v4.2021.2.25, pinch to zoom don't work on iOS.

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Re: Pan/Zoom and Screen Tap is broken on iOS.

Post by Pep » Mon Mar 29, 2021 9:27 am

Hello,
yes, I can reproduce the problem here. We're going to include a fix for it in the next maintenance release version that will be published within one or two days.
Thanks.

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Re: Pan/Zoom and Screen Tap is broken on iOS.

Post by Pep » Mon Mar 29, 2021 9:45 pm

Hello,

Now I noticed that in one of your demos you were useing :

Code: Select all

chart.Aspect.ZoomStyle = SAspect.ZoomStyles.FullChart;
instead of

Code: Select all

chart.Aspect.ZoomStyle = SAspect.ZoomStyles.InChart;
FullChart style was created specially for the first TeeChart for iOS and Android versions in order to add a different way to accomplish the zoom functionality for first xamarin (monotouch at that time) versions, due the slow that it was.
But nowadays and for Xamarin.Forms we can use the InChart (default) way.

I've just tested it with the latest version and it works fine.

TLC
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Re: Pan/Zoom and Screen Tap is broken on iOS.

Post by TLC » Wed Mar 31, 2021 6:03 pm

Then you should probably Obsolete it, so it doesn't cause confusion, as I never found that ANYWHERE in the docs.

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