TeamAmaze/AmazeFileManager

Copy failure

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#1,381 opened on Aug 1, 2018

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 (8 comments) (0 reactions) (1 assignee)Java (4,883 stars) (1,529 forks)batch import
Issue-Bughelp wanted

Description

API 27 AVD Pixel 2

Copy 5MB file.

Logcat:

07-31 13:02:50.841 com.amaze.filemanager W/System.err: java.lang.NullPointerException: Attempt to invoke virtual method 'android.net.Uri android.support.v4.provider.DocumentFile.getUri()' on a null object reference
        at com.amaze.filemanager.utils.files.GenericCopyUtil.startCopy(GenericCopyUtil.java:256)
07-31 13:02:50.842 com.amaze.filemanager W/System.err:     at com.amaze.filemanager.utils.files.GenericCopyUtil.copy(GenericCopyUtil.java:320)
        at com.amaze.filemanager.asynchronous.services.CopyService$DoInBackground$Copy.copyFiles(CopyService.java:486)
        at com.amaze.filemanager.asynchronous.services.CopyService$DoInBackground$Copy.execute(CopyService.java:387)
        at com.amaze.filemanager.asynchronous.services.CopyService$DoInBackground.doInBackground(CopyService.java:260)
        at com.amaze.filemanager.asynchronous.services.CopyService$DoInBackground.doInBackground(CopyService.java:224)
        at android.os.AsyncTask$2.call(AsyncTask.java:333)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:245)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
        at java.lang.Thread.run(Thread.java:764)
07-31 13:02:59.356 com.amaze.filemanager E/CopyService: Got exception checkout: /storage/emulated/0/Download/a.tar

Contributor guide

Tech stack
javaandroid
Domain
mobile
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Android file storage basicsDocumentFile API
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60
Research direction
Investigate the NullPointerException at GenericCopyUtil.java:256. The error occurs because DocumentFile.getUri() is called on a null object. Check the logic in startCopy method to ensure the DocumentFile is not null before accessing its URI. Review the copy process for files on external storage and consider adding a null check or fallback handling.