error: native function 'Window_setNeedsReportTimings' (2 arguments) cannot be found

[tony123S]

We calling isolate function from repo class, but failed.

main

void main() {
  // WidgetsFlutterBinding.ensureInitialized();
  runApp(MyApp());
}

void create(Arguments obj) async {
  WidgetsFlutterBinding.ensureInitialized();

  try {

    var request = http.MultipartRequest(
        "POST",
        Uri.parse(
            "xxxx"));
    request.fields['xxx'] =
        xxxx;

    var streamedResponse = await request.send();
    var response = await http.Response.fromStream(streamedResponse);
             .....

  } catch (e) {
    print(e.toString());
  }
}

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MultiProvider(
        providers: globalProviders,
        child: MaterialApp(
          debugShowCheckedModeBanner: false,
          title: 'xxx',
          theme: ThemeData(
            accentIconTheme: const IconThemeData.fallback().copyWith(
              color: Colors.white,
            ),
            primaryTextTheme: TextTheme(title: TextStyle(color: Colors.white)),
            primarySwatch: Colors.orange,
            primaryIconTheme: const IconThemeData.fallback().copyWith(
              color: Colors.white,
            ),
          ),
          localizationsDelegates: [
            const LocalizationDelegate(),
            GlobalMaterialLocalizations.delegate,
            GlobalWidgetsLocalizations.delegate
          ],
          supportedLocales: [
            const Locale('en', ''),
            const Locale('zh', ''),
          ],
          onGenerateRoute: Router.generateRoute,
          initialRoute: SplashScreen.ROUTE,
        ));
  }
}

repo

WidgetsFlutterBinding.ensureInitialized();
Isolate isolate = await Isolate.spawn(
    create, Arguments(ac, imageList));

return true;

Error

  E/flutter ( 5395): [ERROR:flutter/runtime/dart_isolate.cc(915)] Unhandled exception:
E/flutter ( 5395): error: native function 'Window_setNeedsReportTimings' (2 arguments) cannot be found
E/flutter ( 5395): #0      Window.onReportTimings=  (dart:ui/window.dart:962:7)
E/flutter ( 5395): #1      SchedulerBinding.addTimingsCallback 
package:flutter/…/scheduler/binding.dart:230
E/flutter ( 5395): #2      SchedulerBinding.initInstances 
package:flutter/…/scheduler/binding.dart:206
E/flutter ( 5395): #3      PaintingBinding.initInstances 
package:flutter/…/painting/binding.dart:21
E/flutter ( 5395): #4      SemanticsBinding.initInstances 
package:flutter/…/semantics/binding.dart:22
E/flutter ( 5395): #5      RendererBinding.initInstances 
package:flutter/…/rendering/binding.dart:29
E/flutter ( 5395): #6      WidgetsBinding.initInstances 
package:flutter/…/widgets/binding.dart:253
E/flutter ( 5395): #7      new BindingBase 
package:flutter/…/foundation/binding.dart:56
E/flutter ( 5395): #8      new _WidgetsFlutterBinding&BindingBase&GestureBinding (package:flutter/src/widgets/binding.dart)
E/flutter ( 5395): #9      new _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding (package:flutter/src/widgets/binding.dart)
E/flutter ( 5395): #10     new _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding (package:flutter/src/widgets/binding.dart)
E/flutter ( 5395): #11     new _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding (package:flutter/src/widgets/binding.dart)
E/flutter ( 5395): #12     new _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&SemanticsBinding (package:flutter/src/widgets/binding.dart)
E/flutter ( 5395): #13     new _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&SemanticsBinding&RendererBinding (package:flutter/src/widgets/binding.dart)
E/flutter ( 5395): #14     new _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&SemanticsBinding&RendererBinding&WidgetsBinding (package:flutter/src/widgets/binding.dart)
E/flutter ( 5395): #15     new WidgetsFlutterBinding (package:flutter/src/widgets/binding.dart)
E/flutter ( 5395): #16     WidgetsFlutterBinding.ensureInitialized 
package:flutter/…/widgets/binding.dart:1083
E/flutter ( 5395): #17     create
package:xxx/main.dart:24
E/flutter ( 5395): #18     _AsyncAwaitCompleter.start  (dart:async-patch/async_patch.dart:45:6)
E/flutter ( 5395): #19     create
package:xxx/main.dart:23
E/flutter ( 5395): #20     _startIsolate.<anonymous closure>  (dart:isolate-patch/isolate_patch.dart:310:17)
E/flutter ( 5395): #21     _RawReceivePortImpl._handleMessage  (dart:isolate-patch/iso

[jason-simmons]

The dart:ui package is only available in the main isolate. Secondary isolates can not use Flutter framework APIs such as WidgetsFlutterBinding.ensureInitialized that rely on dart:ui.

[TahaTesser]

Hi @tony123S
Does the proposed solution solve the issue?
Thank you

[tony123S]

Ya. Thanks

[teaphy]

How did you handle this exception? I also encountered。

[teaphy]

@tony123S Hello tony, can you tell me how to resolve it? Thanks!

[tony123S]

@teaphy I not using isolate in my project at the end.

[github-actions]

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