TeamAmaze / TeamAmaze/AmazeFileManager
NPE on `HybridFile#isDirectory`
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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)
Hope this helps & is in the correct place
Exception
- App Name: Amaze File Manager
- Package: com.amaze.filemanager
- Version: 3.7.2
- User Action: UI Error
- Request: Application crash
- OS: Linux Android 11 - 30
- Device: a03su
- Model: SM-S134DL
- Product: a03sutfn
Crash log
java.lang.RuntimeException: An error occurred while executing doInBackground()
at android.os.AsyncTask$4.done(AsyncTask.java:415)
at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:383)
at java.util.concurrent.FutureTask.setException(FutureTask.java:252)
at java.util.concurrent.FutureTask.run(FutureTask.java:271)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:305)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at java.lang.Thread.run(Thread.java:923)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'boolean androidx.documentfile.provider.DocumentFile.isDirectory()' on a null object reference
at com.amaze.filemanager.filesystem.HybridFile.isDirectory(HybridFile.java:579)
at com.amaze.filemanager.filesystem.files.FileUtils.getBaseFileSize(FileUtils.java:206)
at com.amaze.filemanager.filesystem.files.FileUtils.getTotalBytes(FileUtils.java:200)
at com.amaze.filemanager.asynchronous.services.CopyService$DoInBackground.doInBackground(CopyService.java:251)
at com.amaze.filemanager.asynchronous.services.CopyService$DoInBackground.doInBackground(CopyService.java:234)
at android.os.AsyncTask$3.call(AsyncTask.java:394)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
... 4 more
Reporter: via80hd
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 HybridFile.isDirectory in the reported HybridFile.java:579 location, then trace the callers in FileUtils.java:200-206 and CopyService.java:234-251. Run the relevant Android file-copy flow or tests if available and determine the conditions that leave DocumentFile null. Done means the reported copy path no longer crashes and the behavior for that file state is covered.
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
- 35/100