TeamAmaze / TeamAmaze/AmazeFileManager
NPE on `LoadFilesListTask#doInBackground`
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Issue-Bug
- Dominant language
- Kotlin
- Stars
- 6.4k
- Forks
- 1.7k
- Avg merge
- 3d 9h
- Merged PRs (30d)
- 1
Description
Issue explanation (write below this line)
Exception
- App Name: Amaze
- Package: com.amaze.filemanager
- Version: 3.8.2
- User Action: UI Error
- Request: Application crash
- OS: Linux
OnePlus/OnePlus8T/OnePlus8T:12/SKQ1.210216.001/R.202202221852:user/release-keys
12 - 31 - Device: OnePlus8T
- Model: KB2005
- Product: OnePlus8T
Crash log
java.lang.RuntimeException: An error occurred while executing
doInBackground()
at android.os.AsyncTask$4.done(AsyncTask.java:415)
at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:381)
at java.util.concurrent.FutureTask.setException(FutureTask.java:250)
at java.util.concurrent.FutureTask.run(FutureTask.java:269)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1137)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:637)
at java.lang.Thread.run(Thread.java:1012)
Caused by: java.lang.NullPointerException: Attempt to read from field
'boolean
com.amaze.filemanager.adapters.data.LayoutElementParcelable.isDirectory' on
a null object reference in method 'androidx.core.util.Pair
com.amaze.filemanager.asynchronous.asynctasks.LoadFilesListTask.doInBackground(java.lang.Void[])'
at
com.amaze.filemanager.asynchronous.asynctasks.LoadFilesListTask.doInBackground(LoadFilesListTask.java:304)
at
com.amaze.filemanager.asynchronous.asynctasks.LoadFilesListTask.doInBackground(LoadFilesListTask.java:78)
at android.os.AsyncTask$3.call(AsyncTask.java:394)
at java.util.concurrent.FutureTask.run(FutureTask.java:264)
... 3 more
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by inspecting LoadFilesListTask.doInBackground, especially line 304, and the LayoutElementParcelable data used there. Use the supplied crash trace to understand how a null value reaches the isDirectory access; done means the task no longer crashes for this reported path and the relevant behavior is covered by a regression test.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- android, kotlin
- Domain
- mobile
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 30/100