"Worker result FAILURE" on Android #3

webpn · 2018-06-12T12:35:23Z

Plugin works like a breeze on iOS, but I get an error on Android.

This is what I get from the log:

I/flutter (27342): Download task is enqueued with id(a1fd47bc-d615-41ba-8eb9-65dc173bfafb)
D/SystemJobScheduler(27342): Scheduling work ID a1fd47bc-d615-41ba-8eb9-65dc173bfafb Job ID 19
D/GreedyScheduler(27342): Starting tracking for a1fd47bc-d615-41ba-8eb9-65dc173bfafb
D/SystemJobService(27342): onStartJob for a1fd47bc-d615-41ba-8eb9-65dc173bfafb
D/ConstraintTracker(27342): NetworkStateTracker: initial state = [ Connected=true Validated=true Metered=false NotRoaming=true ]
D/NetworkStateTracker(27342): Registering network callback
D/WorkConstraintsTracker(27342): Constraints met for a1fd47bc-d615-41ba-8eb9-65dc173bfafb
D/GreedyScheduler(27342): Constraints met: Scheduling work ID a1fd47bc-d615-41ba-8eb9-65dc173bfafb
D/WorkConstraintsTracker(27342): Constraints met for a1fd47bc-d615-41ba-8eb9-65dc173bfafb
D/GreedyScheduler(27342): Constraints met: Scheduling work ID a1fd47bc-d615-41ba-8eb9-65dc173bfafb
D/Processor(27342): Processor: processing a1fd47bc-d615-41ba-8eb9-65dc173bfafb
D/Processor(27342): Work a1fd47bc-d615-41ba-8eb9-65dc173bfafb is already enqueued for processing
D/Processor(27342): Work a1fd47bc-d615-41ba-8eb9-65dc173bfafb is already enqueued for processing
D/NetworkStateTracker(27342): Network capabilities changed: [ Transports: WIFI Capabilities: NOT_METERED&INTERNET&NOT_RESTRICTED&TRUSTED&NOT_VPN&VALIDATED&FOREGROUND LinkUpBandwidth>=1048576Kbps LinkDnBandwidth>=1048576Kbps SignalStrength: -50]
D/WorkerWrapper(27342): Worker result FAILURE for a1fd47bc-d615-41ba-8eb9-65dc173bfafb
D/Processor(27342): Processor a1fd47bc-d615-41ba-8eb9-65dc173bfafb executed; isSuccessful = false, reschedule = false
D/SystemJobService(27342): a1fd47bc-d615-41ba-8eb9-65dc173bfafb executed on JobScheduler
I/zygote64(27342): Do partial code cache collection, code=61KB, data=47KB
I/zygote64(27342): After code cache collection, code=61KB, data=47KB
I/zygote64(27342): Increasing code cache capacity to 256KB

This is my code:

String taskId = await FlutterDownloader.enqueue(url: link, savedDir: path,);

I know nothing about Android Studio or how to debug Android Apps, so I really don't know how where to start to debug this issue.

Thanks

The text was updated successfully, but these errors were encountered:

webpn · 2018-06-12T12:43:26Z

I tried using different urls, both on HTTP and on HTTPS, but I get the same error.

hnvn · 2018-06-13T06:19:45Z

I can't reproduce your problem. If you don't mind, give me the source code to reproduce it.

cbenhagen · 2018-06-13T07:50:43Z

I see the same issue when I run the example from this repository:

Launching lib/main.dart on Android SDK built for x86 in debug mode...
Initializing gradle...
Resolving dependencies...
Running 'gradlew assembleDebug'...
Built build/app/outputs/apk/debug/app-debug.apk.
I/FlutterActivityDelegate(12202): onResume setting current activity to this
Syncing files to device Android SDK built for x86...
D/        (12202): HostConnection::get() New Host Connection established 0xe7398880, tid 12223
D/EGL_emulation(12202): eglMakeCurrent: 0xe70833c0: ver 3 0 (tinfo 0xe7383340)
I/flutter (12202): Download task (78e95445-4759-4cfa-ade6-3dea7c66ae32) is in status (DownloadTaskStatus(1)) and process (0)
I/flutter (12202): Download task is enqueued with id(78e95445-4759-4cfa-ade6-3dea7c66ae32)
D/SystemJobScheduler(12202): Scheduling work ID 78e95445-4759-4cfa-ade6-3dea7c66ae32 Job ID 71
D/GreedyScheduler(12202): Starting tracking for 78e95445-4759-4cfa-ade6-3dea7c66ae32
D/SystemJobService(12202): onStartJob for 78e95445-4759-4cfa-ade6-3dea7c66ae32
D/ConstraintTracker(12202): NetworkStateTracker: initial state = [ Connected=true Validated=true Metered=false NotRoaming=true ]
D/NetworkStateTracker(12202): Registering network callback
D/WorkConstraintsTracker(12202): Constraints met for 78e95445-4759-4cfa-ade6-3dea7c66ae32
D/GreedyScheduler(12202): Constraints met: Scheduling work ID 78e95445-4759-4cfa-ade6-3dea7c66ae32
D/WorkConstraintsTracker(12202): Constraints met for 78e95445-4759-4cfa-ade6-3dea7c66ae32
D/GreedyScheduler(12202): Constraints met: Scheduling work ID 78e95445-4759-4cfa-ade6-3dea7c66ae32
D/Processor(12202): Processor: processing 78e95445-4759-4cfa-ade6-3dea7c66ae32
D/Processor(12202): Work 78e95445-4759-4cfa-ade6-3dea7c66ae32 is already enqueued for processing
D/Processor(12202): Work 78e95445-4759-4cfa-ade6-3dea7c66ae32 is already enqueued for processing
D/NetworkStateTracker(12202): Network capabilities changed: [ Transports: WIFI Capabilities: NOT_METERED&INTERNET&NOT_RESTRICTED&TRUSTED&NOT_VPN&VALIDATED&FOREGROUND LinkUpBandwidth>=1048576Kbps LinkDnBandwidth>=1048576Kbps SignalStrength: -50]
D/WorkerWrapper(12202): Worker result FAILURE for 78e95445-4759-4cfa-ade6-3dea7c66ae32
D/Processor(12202): Processor 78e95445-4759-4cfa-ade6-3dea7c66ae32 executed; isSuccessful = false, reschedule = false
D/SystemJobService(12202): 78e95445-4759-4cfa-ade6-3dea7c66ae32 executed on JobScheduler

On the beta channel:

[✓] Flutter (Channel beta, v0.4.4, on Mac OS X 10.13.5 17F77, locale de-CH)
    • Flutter version 0.4.4 at /Users/ben/flutter
    • Framework revision f9bb4289e9 (5 weeks ago), 2018-05-11 21:44:54 -0700
    • Engine revision 06afdfe54e
    • Dart version 2.0.0-dev.54.0.flutter-46ab040e58

[✓] Android toolchain - develop for Android devices (Android SDK 27.0.3)
    • Android SDK at /Users/ben/Library/Android/sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-27, build-tools 27.0.3
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1024-b01)
    • All Android licenses accepted.

[✓] iOS toolchain - develop for iOS devices (Xcode 9.4)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 9.4, Build version 9F1027a
    • ios-deploy 1.9.2
    • CocoaPods version 1.5.3

[✓] Android Studio (version 3.1)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin version 25.0.1
    • Dart plugin version 173.4700
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1024-b01)

[✓] Connected devices (1 available)
    • Android SDK built for x86 • emulator-5554 • android-x86 • Android 8.1.0 (API 27) (emulator)

• No issues found!

And dev:

lutter doctor -v
[✓] Flutter (Channel dev, v0.5.4, on Mac OS X 10.13.5 17F77, locale de-CH)
    • Flutter version 0.5.4 at /Users/ben/flutter
    • Framework revision 3019ad976d (2 days ago), 2018-06-11 11:31:25 -0700
    • Engine revision d33bbff470
    • Dart version 2.0.0-dev.60.0.flutter-a5e41681e5

[✓] Android toolchain - develop for Android devices (Android SDK 27.0.3)
    • Android SDK at /Users/ben/Library/Android/sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-27, build-tools 27.0.3
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1024-b01)
    • All Android licenses accepted.

[✓] iOS toolchain - develop for iOS devices (Xcode 9.4)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 9.4, Build version 9F1027a
    • ios-deploy 1.9.2
    • CocoaPods version 1.5.3

[✓] Android Studio (version 3.1)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin version 25.0.1
    • Dart plugin version 173.4700
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1024-b01)

[✓] Connected devices (1 available)
    • Android SDK built for x86 • emulator-5554 • android-x86 • Android 8.1.0 (API 27) (emulator)

• No issues found!

webpn · 2018-06-13T12:49:30Z

Sure, I'll publish my repo soon (probably in next 12 hours): maybe the error is caused by some conflict with other installed packages.

webpn · 2018-06-13T22:15:34Z

Here it is: https://github.com/webpn/demo_downloader

I just picked the interesting part from my app and placed it into a fresh install of Flutter.

If it could be helpful, this is the output from Flutter Doctor:

[✓] Flutter (Channel beta, v0.4.4, on Mac OS X 10.13.5 17F77, locale it-IT)
    • Flutter version 0.4.4 at ~/dev/flutter
    • Framework revision f9bb4289e9 (5 weeks ago), 2018-05-11 21:44:54 -0700
    • Engine revision 06afdfe54e
    • Dart version 2.0.0-dev.54.0.flutter-46ab040e58

[✓] Android toolchain - develop for Android devices (Android SDK 28.0.0)
    • Android SDK at ~/Library/Android/sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-28, build-tools 28.0.0
    • ANDROID_HOME = ~/Library/Android/sdk
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1024-b01)
    • All Android licenses accepted.

[✓] iOS toolchain - develop for iOS devices (Xcode 9.4)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 9.4, Build version 9F1027a
    • ios-deploy 1.9.2
    • CocoaPods version 1.5.3

[✓] Android Studio (version 3.1)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin version 25.0.1
    • Dart plugin version 173.4700
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1024-b01)

hnvn · 2018-06-14T01:30:50Z

I try your code and it works. btw, what device do you test and Android version?

hnvn · 2018-06-14T04:09:31Z

I can reproduce this matter on Android Simulator (running Android 28). I am working on it.

hnvn · 2018-06-14T07:58:43Z

There's a problem with WorkManager library (still in alpha), it causes this plugin failure on Android 26 and above. I need to wait for the next version of WorkManager.

webpn · 2018-06-14T08:22:26Z

I tested that code directly on my phone, which runs on Android 8.0.0 (= API level 26).

hnvn · 2018-06-14T08:54:36Z

There's a significant change of background task policy from API 26. I think it causes our problem. I just created an issue for WorkManager, it's a new project of Google, so it would be updated soon.

hnvn · 2018-06-14T10:18:50Z

There's a mature library called JobIntentService can address our problem, I think I will consider switching to it

hnvn · 2018-06-15T02:41:39Z

I got it worked. It's just my stupid mistake when I config NotificationChannel (not the problem of WorkManager library). I've just published v.0.0.4. Let's check it out.

webpn · 2018-06-15T12:32:25Z

Yay, it works perfectly!

Feature suggestion: new parameter to specify how many concurrent download should be running.

hnvn · 2018-06-16T09:33:24Z

I can set the max concurrent download task on iOS side (in fact, I set it 5 now) but I don't see anything like that in WorkManager on Android side. I will bring up this feature when I can deal with Android side

merge from master

Joao-Filh0 · 2022-01-29T17:25:52Z

I have this problem , can you help me ?

java.lang.NullPointerException: uri
W/System.err( 9348): at com.android.internal.util.Preconditions.checkNotNull(Preconditions.java:133)
W/System.err( 9348): at android.content.ContentResolver.query(ContentResolver.java:918)
W/System.err( 9348): at android.content.ContentResolver.query(ContentResolver.java:880)
W/System.err( 9348): at android.content.ContentResolver.query(ContentResolver.java:836)
W/System.err( 9348): at vn.hunghd.flutterdownloader.DownloadWorker.getMediaStoreEntryPathApi29(DownloadWorker.java:531)
W/System.err( 9348): at vn.hunghd.flutterdownloader.DownloadWorker.downloadFile(DownloadWorker.java:394)
W/System.err( 9348): at vn.hunghd.flutterdownloader.DownloadWorker.doWork(DownloadWorker.java:235)
W/System.err( 9348): at androidx.work.Worker$1.run(Worker.java:86)
W/System.err( 9348): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
W/System.err( 9348): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
W/System.err( 9348): at java.lang.Thread.run(Thread.java:919)
I/WM-WorkerWrapper( 9348): Worker result FAILURE for Work [ id=9b39dcf7-121d-4c59-a740-68496528c170, tags={ flutter_download_task, vn.hunghd.flutterdownloader.DownloadWorker } ]

ramonpaolo · 2022-06-25T20:35:06Z

I have the same problem today

With: flutter_downloader: ^1.7.0+1

ElsayedDev · 2022-12-10T09:49:32Z

Make sure you added this permissions in AndroidManifest.xml


    <uses-permission android:name="android.permission.INTERNET"/>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>

In main function add FlutterDownloader.registerCallback(DownloadClass.callback); ( it is take static callback )

as mentioned in https://stackoverflow.com/a/72889016/11989529

abstract class DownloadClass {
  static void callback(String id, DownloadTaskStatus status, int progress) {
    debugPrint("Download Status:: $status");
    debugPrint("Download Progress:: $progress");
  }
}

void main() async {
  WidgetsFlutterBinding.ensureInitialized();

  await FlutterDownloader.initialize(debug: true);

  FlutterDownloader.registerCallback(DownloadClass.callback);

  runApp(const MyApp());
}

hnvn added the bug Something isn't working label Jun 13, 2018

hnvn closed this as completed Jun 15, 2018

Gicminos mentioned this issue Nov 18, 2019

null pointer dereference on FlutterDownloader.open #178

Closed

lijing89 mentioned this issue Jan 12, 2020

'callbackHandle != null': callback must be a top-level or a static function #215

Closed

284082529 mentioned this issue Aug 11, 2020

Warning: Attempt to present <UIDocumentPickerViewController: 0x12a5bdb70> on <BaseNavigationController: 0x104875800> whose view is not in the window hierarchy! #326

Open

sahmadreza added a commit to sahmadreza/flutter_downloader that referenced this issue Nov 4, 2020

bugFix fluttercommunity#3

5cd7b30

atrope added a commit to atrope/flutter_downloader that referenced this issue Jun 10, 2021

Merge pull request fluttercommunity#3 from fluttercommunity/master

ebb8634

merge from master

wch2219 mentioned this issue Jul 5, 2021

安卓下载崩溃 #490

Closed

Alisafirzadeh mentioned this issue Sep 14, 2021

Crash App #530

Closed

kheson77 mentioned this issue Nov 8, 2021

IOS (Iphone 8) - Not working, just circularprogressindicator #555

Open

Ajay55 mentioned this issue May 1, 2022

New Connection Opened when Downloading File #399

Open

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"Worker result FAILURE" on Android #3

"Worker result FAILURE" on Android #3

webpn commented Jun 12, 2018

webpn commented Jun 12, 2018 •

edited

hnvn commented Jun 13, 2018

cbenhagen commented Jun 13, 2018

webpn commented Jun 13, 2018

webpn commented Jun 13, 2018

hnvn commented Jun 14, 2018

hnvn commented Jun 14, 2018

hnvn commented Jun 14, 2018

webpn commented Jun 14, 2018

hnvn commented Jun 14, 2018

hnvn commented Jun 14, 2018

hnvn commented Jun 15, 2018

webpn commented Jun 15, 2018

hnvn commented Jun 16, 2018

Joao-Filh0 commented Jan 29, 2022

ramonpaolo commented Jun 25, 2022 •

edited

ElsayedDev commented Dec 10, 2022 •

edited

"Worker result FAILURE" on Android #3

"Worker result FAILURE" on Android #3

Comments

webpn commented Jun 12, 2018

webpn commented Jun 12, 2018 • edited

hnvn commented Jun 13, 2018

cbenhagen commented Jun 13, 2018

webpn commented Jun 13, 2018

webpn commented Jun 13, 2018

hnvn commented Jun 14, 2018

hnvn commented Jun 14, 2018

hnvn commented Jun 14, 2018

webpn commented Jun 14, 2018

hnvn commented Jun 14, 2018

hnvn commented Jun 14, 2018

hnvn commented Jun 15, 2018

webpn commented Jun 15, 2018

hnvn commented Jun 16, 2018

Joao-Filh0 commented Jan 29, 2022

ramonpaolo commented Jun 25, 2022 • edited

ElsayedDev commented Dec 10, 2022 • edited

webpn commented Jun 12, 2018 •

edited

ramonpaolo commented Jun 25, 2022 •

edited

ElsayedDev commented Dec 10, 2022 •

edited