TeamAmaze / TeamAmaze/AmazeFileManager
NPE on `TrashBin#deletePermanently`
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Crash-NullPointerException
From-Email
Issue-Bug
Issue-Easy (good first issue)
- 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: 3.10
- User Action: UI Error
- Request: Application crash
- OS: Linux Android 14 - 34
- Device: gta7litewifi
- Model: SM-T220
- Product: gta7litewifixx
Crash log
io.reactivex.exceptions.OnErrorNotImplementedException: The exception was
not handled due to missing onError handler in the subscribe() method call.
Further reading: https://github.com/ReactiveX/RxJava/wiki/Error-Handling |
java.lang.NullPointerException: Attempt to invoke virtual method
'java.lang.String com.amaze.trashbin.TrashBinFile.getPath()' on a null
object reference
at
io.reactivex.internal.observers.EmptyCompletableObserver.onError(EmptyCompletableObserver.java:50)
at
io.reactivex.internal.operators.completable.CompletableSubscribeOn$SubscribeOnObserver.onError(CompletableSubscribeOn.java:74)
at
io.reactivex.internal.operators.completable.CompletableFromRunnable.subscribeActual(CompletableFromRunnable.java:40)
at io.reactivex.Completable.subscribe(Completable.java:2309)
at
io.reactivex.internal.operators.completable.CompletableSubscribeOn$SubscribeOnObserver.run(CompletableSubscribeOn.java:64)
at io.reactivex.Scheduler$DisposeTask.run(Scheduler.java:578)
at
io.reactivex.internal.schedulers.ScheduledRunnable.run(ScheduledRunnable.java:66)
at
io.reactivex.internal.schedulers.ScheduledRunnable.call(ScheduledRunnable.java:57)
at java.util.concurrent.FutureTask.run(FutureTask.java:264)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:307)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:644)
at java.lang.Thread.run(Thread.java:1012)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method
'java.lang.String com.amaze.trashbin.TrashBinFile.getPath()' on a null
object reference
at com.amaze.trashbin.TrashBin.deletePermanently(TrashBin.kt:121)
at
com.amaze.filemanager.filesystem.HybridFile.deletePermanentlyFromBin(HybridFile.java:1600)
at com.amaze.filemanager.filesystem.HybridFile.delete(HybridFile.java:1543)
at
com.amaze.filemanager.application.AppConfig.lambda$getTrashBinInstance$2(AppConfig.java:285)
at
com.amaze.filemanager.application.AppConfig.$r8$lambda$hMGiVDvfwwzG3tz2_fRQ8F7OGvY(Unknown
Source:0)
at
com.amaze.filemanager.application.AppConfig$$ExternalSyntheticLambda4.run(Unknown
Source:4)
at
io.reactivex.internal.operators.completable.CompletableFromRunnable.subscribeActual(CompletableFromRunnable.java:36)
... 10 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 at com.amaze.trashbin.TrashBin.deletePermanently in TrashBin.kt around line 121, then trace the callers in HybridFile.java and AppConfig.java shown in the stack trace. Determine why the TrashBinFile is null and make permanent deletion complete without this crash; verify the delete path no longer raises the reported NullPointerException.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- android, kotlin
- Domain
- mobile
- Issue type
- Bug
- Difficulty
- 2/5
- Estimated time
- 1-3 hours
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100