Provide a way to handle navigating back and forth between NavHostFragments embedded within other NavHostFragments (or if it's already available, document how to do) [120690961]

Fixed

Feature Request

Status Update

No update yet.

Description

je...@23andme.com

created issue #1

Dec 9, 2018 03:07AM

Component used: Navigation
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:

https://stackoverflow.com/q/53688934/1229936
Sample Code:

https://github.com/jeffreyfhow/NestedNavFragmentsTest

Comments

so...@gmail.com <so...@gmail.com> #2Dec 9, 2018 07:33AM

Project: platform/frameworks/support
Branch: androidx-master-dev

commit f570475abb57a6527f861a083ddfccf451b3427b
Author: Sumir Kataria <sumir@google.com>
Date: Wed Aug 29 14:09:32 2018

Add ability to trigger timed work in TestDriver.

Bug: 113360060
Test: Added and ran new tests in TestSchedulerTest.
Change-Id: I681db88e3190b96e90a5d531b7b1fa053eaf8ab9

M work/workmanager-test/src/androidTest/java/androidx/work/test/TestSchedulerTest.java
A work/workmanager-test/src/androidTest/java/androidx/work/test/workers/CountingTestWorker.java
M work/workmanager-test/src/androidTest/java/androidx/work/test/workers/TestWorker.java
M work/workmanager-test/src/main/java/androidx/work/test/TestDriver.java
M work/workmanager-test/src/main/java/androidx/work/test/TestScheduler.java
M work/workmanager-test/src/main/java/androidx/work/test/WorkManagerTestInitHelper.java

https://android-review.googlesource.com/740398

https://goto.google.com/android-sha1/f570475abb57a6527f861a083ddfccf451b3427b

il...@google.com <il...@google.com> #3Dec 10, 2018 05:58PM

The testing artifact (work-testing) will have the ability to trigger initial delays and period met signals in alpha09. You should use this to simulate any testing you need.

il...@google.com <il...@google.com> Dec 10, 2018 09:55PM

Accepted by il...@google.com.

il...@google.com <il...@google.com> #4Dec 14, 2018 12:05AM

Marked as fixed.

Wau, that was incredibly fast, thanks!

ka...@gmail.com <ka...@gmail.com> #5Dec 27, 2018 05:06PM

Re #4 - In my use case I have single activity and single (global) toolbar setup with it. So it doesn't make sense for my application to add additional toolbar for my nested fragments. I just want to work them with existing activity's toolbar. I would like to use nested fragments to use ViewModels shared with parentFragment. Can you consider supporting my use case?

Issue 120690961