MissingPluginException(No implementation

[K leo]

I try to run an app from github (https://github.com/awaik/todo_hive_example).  I got it run on Android.  But when I run it on Linux, I got this "method not implemented" error.  I wonder if this is real or something I have not configured correctly.  Where is the relevant file for me to check?  Any suggestions please.

$ flutter run  
Running "flutter pub get" in todo_hive_example...                   1.2s

Launching lib/main.dart on Linux in debug mode...

Building Linux application...                                            
Waiting for Linux to report its views...                             9ms

Syncing files to device Linux...                                   535ms


An Observatory debugger and profiler on Linux is available at: http://127.0.0.1:38557/FgROiCCrfgo=/

[ERROR:flutter/lib/ui/ui_dart_state.cc(166)] Unhandled Exception: MissingPluginException(No implementation fou
nd for method getApplicationDocumentsDirectory on channel plugins.flutter.io/path_provider)

#0      MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:159:7)

<asynchronous suspension>

#1      MethodChannel.invokeMethod (package:flutter/src/services/platform_channel.dart:334:12)

#2      MethodChannelPathProvider.getApplicationDocumentsPath (package:path_provider_platform_interface/src/me
thod_channel_path_provider.dart:50:10)

#3      getApplicationDocumentsDirectory (package:path_provider/path_provider.dart:76:39)

#4      HiveX.initFlutter (package:hive_flutter/src/hive_extensions.dart:11:26)

#5      main (package:todo_hive_example/main.dart:10:14)

#6      _runMainZoned.<anonymous closure>.<anonymous closure> (dart:ui/hooks.dart:233:25)

#7      _rootRun (dart:async/zone.dart:1190:13)

#8      _CustomZone.run (dart:async/zone.dart:1093:19)

#9      _runZoned (dart:async/zone.dart:1630:10)

#10     runZonedGuarded (dart:async/zone.dart:1618:12)

#11     _runMainZoned.<anonymous closure> (dart:ui/hooks.dart:225:5)

#12     _startIsolate.<anonymous closure> (dart:isolate-patch/isolate_patch.dart:301:19)

#13     _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:168:12)

$ flutter -v doctor

[✓] Flutter (Channel dev, 1.20.0-7.1.pre, on Linux, locale en_US.UTF-8)

    • Flutter version 1.20.0-7.1.pre at /home/xxx/Software/flutter

    • Framework revision 7736f3bc90 (7 days ago), 2020-07-10 16:33:05 -0700

    • Engine revision d48085141c

    • Dart version 2.9.0 (build 2.9.0-21.2.beta)



 
[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.2)

    • Android SDK at /home/xxx/Software/Android

    • Platform android-29, build-tools 29.0.2

    • ANDROID_HOME = /home/xxx/Software/Android

    • ANDROID_SDK_ROOT = /home/xxx/Software/Android

    • Java binary at: /home/xxx/Software/android-studio/jre/bin/java

    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6222593)

    • All Android licenses accepted.



[✓] Linux toolchain - develop for Linux desktop

    • clang version 10.0.0-4ubuntu1

    • cmake version 3.16.3

    • ninja version 1.10.0

    • pkg-config version 0.29.1



[✓] Android Studio (version 4.0)

    • Android Studio at /home/xxx/Software/android-studio

    • Flutter plugin version 47.1.2

    • Dart plugin version 193.7361

    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6222593)



[✓] Connected device (1 available)

    • Linux (desktop) • linux • linux-x64 • Linux



• No issues found!

[Souvik Dutta]

This is probably because of a platform specific code which is not handled properly. It won't run anywhere other than android. Because the apis and methods provider by android are not the same as the apis and methods provided by linux. You will have find a file that is using platform channels. Then wrap the code with a try and except block which should solve the problem. 

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[Adeola]

Yes you are correct @souvik. "getApplicationDocumentsDirectory" , refers to the path_provider package. The path_provider package won't work on linux but rather path_provider_linux would work.

[Stuart Morgan]

On Fri, Jul 17, 2020 at 6:19 AM Adeola <inbox...@gmail.com> wrote:

The path_provider package won't work on linux

path_provider works on Linux as of version 1.6.10. The issue here is that the project in question has pinned path_provider to 1.6.5. 

 

but rather path_provider_linux would work.

path_provdier_linux is the federated implementation of path_provider for Linux, and is automatically used in the current version of path_provider. There is rarely a reason to use a federated platform implementation directly.

-Stuart 

[K leo]

Thanks Stuart for clarifying.

The project did not set dependency on path_provider.  It is a dependency of hive_flutter.

But Anyhow, I upgraded flutter yesterday to the newest dev (it was a version just about a week old), and had to add a couple dependency_overrides (not related to path_provider), now the app works on Linux.

pubspec:

name: todo_hive_example

description: Very simple todo app made with Hive.

version: 1.0.0+1

environment:

 sdk: ">=2.1.0 <3.0.0"

dependencies:

 flutter:

   sdk: flutter

  cupertino_icons: ^0.1.3

 hive: ^1.4.1+1

 hive_flutter: ^0.3.0+2

dev_dependencies:

#  flutter_test:

#    sdk: flutter

 hive_generator: ^0.7.0+2

 build_runner: ^1.8.1

dependency_overrides:

 dartx: ^0.4.0

 collection: ">=1.14.0 <1.16.0"

flutter:

 uses-material-design: true

[Stuart Morgan]

On Sat, Jul 18, 2020 at 12:43 AM K leo <cnbi...@gmail.com> wrote:

The project did not set dependency on path_provider.

It checked in a pubspec.lock, however; see the link in my previous email.

-Stuart