singleTop operations fail with a NullPointerException when replacing a no argument destination [158006669]

Fixed

Bug

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Description

il...@google.com

created issue on behalf of mi...@gmail.com #1

Jun 2, 2020 06:06PM

Component used: Navigation Version used: 2.3.0-beta01

From this comment:

There is a bug in NavController (line 1078): mBackStack.peekLast().getArguments().putAll(args);

When getArguments(). return null, NPE is thrown.

Basically this is a case when current (old) fragment was created without arguments, but new navigation event has bundle args.

Comments

ap...@google.com <ap...@google.com> #2Jun 2, 2020 08:03PM

Nested scrolling works partially (as per

http://b/122818889). Let's discuss if we need full support and if so make sure it works.

il...@google.com <il...@google.com> #3Jun 2, 2020 11:49PM

Marked as fixed.

Hi!

What is 'partially' exactly?
How do I see it?
Thanks!

lc...@gmail.com <lc...@gmail.com> #4Jun 5, 2020 01:42AM

As of now:
- Nesting scroll views with a scroll direction perpendicular to the ViewPager2's orientation inside ViewPager2 works
- Nesting scroll views with a scroll direction parallel to the ViewPager2's orientation inside ViewPager2 does not work

Issue 158006669

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Comments

ap...@google.com <ap...@google.com> #2Jun 2, 2020 08:03PM

il...@google.com <il...@google.com> #3Jun 2, 2020 11:49PM

lc...@gmail.com <lc...@gmail.com> #4Jun 5, 2020 01:42AM

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