Fixed
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so...@gmail.com <so...@gmail.com> #2
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il...@google.com <il...@google.com> #3
Seeing this with a FragmentPagerAdapter as well. Our app has three static tabs, and opens by default on tab 1. Previously, the fragments for tab 2 and tab 3 would have their onResume() called when the activity's onResume() was called, even though those tabs weren't visible yet.
Now, since 27.1.0, onResume() on those tabs' fragments is only called when the user navigates to them.
Now, since 27.1.0, onResume() on those tabs' fragments is only called when the user navigates to them.
il...@google.com <il...@google.com>
il...@google.com <il...@google.com> #4
#3 can you try to provide a repro app? I've lost 4 hours already and can't find the root cause, the basic AS sample does not produce that :(
Maybe it's easier from your code.
Maybe it's easier from your code.
ka...@gmail.com <ka...@gmail.com> #5
I also tried with the sample app (https://github.com/googlesamples/android-HorizontalPaging ) which doesn't have the issue.
I did find a clue in my app though: the first tab's fragment does getLoaderManager().initLoader() in its onActivityCreated(). If I comment this out, the onResume() methods of all the fragments are called at once as with support lib 27.0.2.
This might be related to this change in the support lib release notes:
> The underlying implementation of Loaders has been rewritten to use Lifecycle.
It's going to be quite a bit of work to get this into a small sample app though. I can't share my own app.
I did find a clue in my app though: the first tab's fragment does getLoaderManager().initLoader() in its onActivityCreated(). If I comment this out, the onResume() methods of all the fragments are called at once as with support lib 27.0.2.
This might be related to this change in the support lib release notes:
> The underlying implementation of Loaders has been rewritten to use Lifecycle.
It's going to be quite a bit of work to get this into a small sample app though. I can't share my own app.
Description
Version used: 1.0.0-alpha08
Devices/Android versions reproduced on:
Assuming:
- Main Activity has a NavHostFragment, which navigates between Fragment A & Fragment B
- Main activity handles going back with onSupportNavigateUp
- Fragment B has it's own NavHostFragment, which navigated between InnerFragmentB1 & InnerFragmentB2
- Parent NavHostFragment navigates from A -> B (which starts with B1)
- Sub NavHostFragment navigates from B1 -> B2
- Press up: Sub NavHostFragment returns to B1
- Press up: Parent NavHostFragment returns from B to A
What's the proper way of handling these types of situations where we'd like the back button to handle backing out of Inner Fragments first and then Outer Fragments after?
Details here:
Sample Code: