Comments (10)
The implementation of the third solution in flutter-tizen/flutter-tizen#177 (comment) can be found at: swift-kim/flutter-tizen@6fd8233
The commit should land after the next Flutter stable release.
cc @HakkyuKim
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My conclusion is that plugins are generally not expected to work properly inside isolates. This applies to other platforms as well, regardless of the underlying implementation mechanism (platform channel or Dart plugin registrant). (There's even a third-party package called flutter_isolate that allows invoking plugins from isolates.)
The only workaround is to call the register
function of a plugin (Dart plugin) before invoking its API from an isolate.
Example (path_provider_tizen):
import 'package:flutter/foundation.dart';
import 'package:path_provider/path_provider.dart';
import 'package:path_provider_tizen/path_provider_tizen.dart';
compute((Object? message) async {
PathProviderPlugin.register();
await getApplicationDocumentsDirectory();
}, null);
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to solve this limitation, do we need re-implement plugins based on native?
from plugins.
No, we need to check how other platforms tackle this problem but I had not enough time to investigate.
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- I tested
path_provider_windows
on Windows and it worked without problem on secondary isolates. I'm still not exactly sure how the Dart plugin registry for Windows is different from flutter-tizen's. generated_main.dart
was not generated by flutter_tools even with flutter/flutter#79669 applied on Windows. I don't know why.- Still flutter/flutter#79669 will land to the stable branch soon and it would be better to re-implement flutter-tizen's Dart plugin registry based on the official one. In fact its approach is not quite different from ours, but the main difference is that
generateMainDartWithPluginRegistrant
(equivalent of_createEntrypoint
for Tizen) is part of the build graph. - Consider adding
implements:
attributes to Tizen plugins' pubspecs. It's not quite necessary tho because the attribute doesn't do very much thing.
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I'll test swift-kim/flutter-tizen@1ed4ee7 when the next stable Flutter version is released.
Related engine PR: flutter/engine#25496
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@swift-kim That was really fast! Thank you!
I'll have a closer look tomorrow.
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It seems Dart plugin registrants are not yet fully implemented for secondary isolates in the upstream engine: flutter/flutter#81421
Thus the change in #123 (comment) has no effect.
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I tried invoking InvokeDartPluginRegistrantIfAvailable
(Dart_RootLibrary
~Dart_Invoke
) after initializing secondary isolates but encountered only some segmentation faults. I'm not sure where I can safely put the code (I tried in DartIsolateInitializeCallback
and SpawnIsolateTask:Run
).
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Will be fixed by flutter-tizen/flutter-tizen#516.
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Related Issues (20)
- [video_player_videohole] Problem reading DASH' integrated subtitles HOT 5
- dart analyze error (dart 3.1.0) HOT 2
- [video_player_videohole] Detailed errors HOT 1
- [video_player_videohole] Problem reading a drm protected Dash format with token authorization HOT 3
- Firebase core - how to use it HOT 6
- Problem using device manager to view logs on devices HOT 5
- [video_player] httpHeaders support HOT 2
- [flutter_webrtc] Crash when trying to add empty IceCandidate HOT 5
- [video_player_avplay] There are GStreamer errors in the log HOT 4
- [tizen_bundle] Bundle creation issue HOT 2
- [ci] The release workflow fails HOT 1
- Ongoing Activity HOT 5
- [webview_flutter_tizen] crash when run on real TV device HOT 34
- Not supporting low latency mode (HLS) HOT 2
- Inconsistent statements in documentation HOT 2
- [video_player_avplay] pausing video will throw an error and can not resume play in some situtaion HOT 3
- [video_player_avplay] The type of plusplayer's volume is different
- [video_player_avplay] Failed to build video_player_avplay plugin HOT 2
- Unresolved reference: samsung kotlin(UNRESOLVED_REFERENCE)
- [wearable_rotary] First RotaryController of NavigationStack never dismissed HOT 2
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