Fixed
Status Update
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Comments
se...@google.com
This is a hard one. We can't easily read native crashes from that Motorola device since their system image is not public. I assume you can't reproduce this either, but if possible can you try using WorkManager 2.0.0 or 1.0.1-rc01? This would help track down the possible changes that might have introduced this issue. Thanks!
or...@gmail.com
We actually did reproduce it, the current store version of Pocket Casts has WorkManager 2.0.0 and this bug if you want to try and test something. I will try 1.0.1-rc01 and report back.
or...@gmail.com
Is there a difference between 1.0.1 and 2.0.1? We tried 2.0.1 and it was crashing, if there is a difference I can try 1.0.1 but I thought they were the same?
se...@google.com
Can you also describe how you trigger the bug and which devices manifest the problem? Is it just running the app? Is it doing something specific?
or...@gmail.com
We are testing on a Moto X running Android 6.0 but our play store report shows numerous motorola devices are crashing as the attached screenshots show. We just downloaded a bunch of episodes (which uses workmanager) and eventually it started crashing, it would then crash at start up every time.
il...@google.com
So to answer your earlier question, 1.0.1 should be equivalent but I think there may be some small differences in Room between 1.0 and 2.0 and since this crash seems related to Room, that's why we were asking if you could check to see if you can reproduce it on 1.x.
Regarding the initial crash, do you have any logs for that?
Regarding the initial crash, do you have any logs for that?
Description
Version used:1.1.0-alpha03
Devices/Android versions reproduced on:
as per
After updating to androidx.fragment:fragment-testing v1.0-alpha03 we're now getting following crash at end of test.
```
java.lang.NullPointerException: Attempt to invoke virtual method 'java.util.Collection java.util.concurrent.ConcurrentHashMap.values()' on a null object reference
at androidx.lifecycle.ViewModel.clear(ViewModel.java:125)
at androidx.lifecycle.ViewModelStore.clear(ViewModelStore.java:62)
```
Importantly this is test where we're mocking instance of ViewModel being used and issues seems to be related to associated changes to lifecycle-viewmodel v2.1.0-alpha01 which we now have a transitive dependency to. Specifically crash is occurring in following method because mBagOfTags is null
```
final void clear() {
mCleared = true;
for (Object value: mBagOfTags.values()) {
// see comment for the similar call in setTagIfAbsent
closeWithRuntimeException(value);
}
onCleared();
}
```
repo steps:
clone
checkout `fragment_test_issue ` branch
run `RouteListFragmentTest`