Nativescript-ui-feedback: [5.1.0] RadListView scrolling and swiping at the same time breaks the tap event

[larssn]

Did you verify this is a real problem by searching the NativeScript Forum?

No, that forum has been in readonly mode for a while now. You should update your github template here.

Tell us about the problem

So I originally posted this issue here: https://github.com/telerik/nativescript-ui-feedback/issues/351#issuecomment-452815812 but I'm thinking it's better to post it here.

1. When you're scrolling through a list supporting swipeActions, and quickly swipe to the side (while it's still scrolling), the swipe action events will not trigger afterwards. The swipe panel still slides to both sides, but the buttons do nothing (the tap event is ignored). The only way to get them working again is to click the item itself, reopen the slide and re-click the buttons.

If you allow the scroll animation to completely settle before trying to swipe, then everything works as expected, but our users aren't that patient.

1. When hitting the above bug, the scrollEnded event no longer triggers (assume it gets blocked).

Both combined, these bugs cause mayhem for us. :-)
We spent the entire day debugging this.

We've confirmed that by rolling back to 5.0.1, everything works as expected.

Here's a playground that shows everything working; https://play.nativescript.org/?template=play-ng&id=ne9nN3&v=6 (Playground is running v5.0.1 still)
To see the bugs in action, download the Playground project, and update nativescript-ui-listview to 5.1.0.
Then do what I explained above. With the above playground project, we can replicate the problem with 100% consistency.

Which platform(s) does your issue occur on?

Android

Please provide the following version numbers that your issue occurs with:

• Progress NativeScript UI version: 5.1.0
• CLI: 5.1.0
• Cross-platform modules: 5.1.1
• Runtime(s): 5.1.0 for both

Please tell us how to recreate the issue in as much detail as possible.

See above

Is there code involved? If so, please share the minimal amount of code needed to recreate the problem.

Playground link plus instructions above

[tsonevn]

HI @larssn,
I reviewed the provided sample project on my side, however, was unable to recreate the issue. For your convenience, I am attaching video, which demonstrates the behaviour on my side. Please, review the video and check if I am missing something.
demo.zip

[larssn]

Did you remember to update the dependency to 5.1.0?

And if so, are you using an emulator? If it's a race condition you might need a slower device to get the problem to show itself.

Lars

[tgpetrov]

Hi @larssn,
Thank you for your report, we will soon release a fix for the observed issue.

[larssn]

You're very welcome.

Thanks for confirming