My "hello world" flutter app yields a compile time exception when I run it and I don't know why, could you help?
Launching lib\main.dart on Android SDK built for x86 in debug mode...
Initializing gradle...
Resolving dependencies...
Gradle task 'assembleDebug'...
Built build\app\outputs\apk\debug\app-debug.apk.
Installing build\app\outputs\apk\app.apk...
I/Choreographer(11667): Skipped 38 frames! The application may be doing too much work on its main thread.
D/EGL_emulation(11667): eglMakeCurrent: 0x9fe05840: ver 3 0 (tinfo 0x9fe038e0)
Syncing files to device Android SDK built for x86...
I/flutter (11667): ══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════
I/flutter (11667): The following _CompileTimeError was thrown building WidgetsApp-[GlobalObjectKey
I/flutter (11667): _MaterialAppState#bcca2](dirty, state: _WidgetsAppState#2be90):
I/flutter (11667): 'package:flutter/src/widgets/app.dart': error: line 1129 pos 21:
I/flutter (11667): file:///D:/Flutter/flutter/packages/flutter/lib/src/widgets/app.dart:1129:21: Error: Too few
I/flutter (11667): positional arguments: 1 required, 0 given.
I/flutter (11667): result = Stack(
I/flutter (11667): ^
I/flutter (11667): result = Stack(
I/flutter (11667): ^
I/flutter (11667):
I/flutter (11667): When the exception was thrown, this was the stack:
I/flutter (11667): #0 StatefulElement.build (package:flutter/src/widgets/framework.dart:3809:27)
I/flutter (11667): #1 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3721:15)
I/flutter (11667): #2 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5)
I/flutter (11667): #3 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5)
I/flutter (11667): #4 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3848:11)
I/flutter (11667): #5 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5)
I/flutter (11667): #6 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14)
I/flutter (11667): #7 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12)
I/flutter (11667): #8 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16)
I/flutter (11667): #9 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5)
I/flutter (11667): #10 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5)
I/flutter (11667): #11 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5)
I/flutter (11667): #12 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14)
I/flutter (11667): #13 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12)
I/flutter (11667): #14 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16)
I/flutter (11667): #15 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5)
I/flutter (11667): #16 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5)
I/flutter (11667): #17 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5)
I/flutter (11667): #18 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14)
I/flutter (11667): #19 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12)
I/flutter (11667): #20 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16)
I/flutter (11667): #21 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5)
I/flutter (11667): #22 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5)
I/flutter (11667): #23 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5)
I/flutter (11667): #24 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14)
I/flutter (11667): #25 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12)
I/flutter (11667): #26 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16)
I/flutter (11667): #27 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5)
I/flutter (11667): #28 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5)
I/flutter (11667): #29 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3848:11)
I/flutter (11667): #30 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5)
I/flutter (11667): #31 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14)
I/flutter (11667): #32 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12)
I/flutter (11667): #33 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16)
I/flutter (11667): #34 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5)
I/flutter (11667): #35 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5)
I/flutter (11667): #36 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5)
I/flutter (11667): #37 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14)
I/flutter (11667): #38 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12)
I/flutter (11667): #39 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16)
I/flutter (11667): #40 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5)
I/flutter (11667): #41 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5)
I/flutter (11667): #42 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3848:11)
I/flutter (11667): #43 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5)
I/flutter (11667): #44 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14)
I/flutter (11667): #45 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12)
I/flutter (11667): #46 RenderObjectToWidgetElement._rebuild (package:flutter/src/widgets/binding.dart:909:16)
I/flutter (11667): #47 RenderObjectToWidgetElement.mount (package:flutter/src/widgets/binding.dart:880:5)
I/flutter (11667): #48 RenderObjectToWidgetAdapter.attachToRenderTree.<anonymous closure> (package:flutter/src/widgets/binding.dart:826:17)
I/flutter (11667): #49 BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2266:19)
I/flutter (11667): #50 RenderObjectToWidgetAdapter.attachToRenderTree (package:flutter/src/widgets/binding.dart:825:13)
I/flutter (11667): #51 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&SemanticsBinding&RendererBinding&WidgetsBinding.attachRootWidget (package:flutter/src/widgets/binding.dart:712:7)
I/flutter (11667): #52 runApp (package:flutter/src/widgets/binding.dart:756:7)
I/flutter (11667): #53 main (package:new_flutter_app_demo/main.dart:4:3)
I/flutter (11667): #54 _startIsolate.<anonymous closure> (dart:isolate/runtime/libisolate_patch.dart:289:19)
I/flutter (11667): #55 _RawReceivePortImpl._handleMessage (dart:isolate/runtime/libisolate_patch.dart:171:12)
I/flutter (11667): ════════════════════════════════════════════════════════════════════════════════════════════════════
D/ (11667): HostConnection::get() New Host Connection established 0x8bae6140, tid 11694
D/EGL_emulation(11667): eglMakeCurrent: 0xa7a652e0: ver 3 0 (tinfo 0x9fb09ac0)
Sorry for late answering.Please delete flutter sdk and reinstall flutter sdk it is complete work.
Executing the following commands in the Flutter install directory should fix it
git clean -xfd
git stash save --keep-index
git stash drop
git pull
flutter doctor
Related
I just generated 10000 files in the Flutter app project in VSC:
{placeholder0, placeholder1 ..., placeholder10000}
Each file contains simple widget returning next Placeholder, like Placeholder0 widget returns Placeholder1 widget and so on.. where Placeholder10000 returns just Text('test').
(What I also noticed VSC behaviour is getting strange once so much files is placed inside the project, like Dart Analyzer is super lagging. I could not fint any info about number of files limitations within the project). Actually is it possible to run the project with such of big number of files inside it?
Once I put Placeholder0 widget in the body of my HomePage try to run the app on simulator (iOS Simulator) i got following StackOverFlow error:
The relevant error-causing widget was
Placeholder453
lib/placeholders/placeholder452.dart:9
When the exception was thrown, this was the stack
#0 _HashBase._isDeleted (dart:collection-patch/compact_hash.dart:198:3)
#1 _LinkedHashMapMixin._init (dart:collection-patch/compact_hash.dart:429:24)
#2 _LinkedHashMapMixin._rehash (dart:collection-patch/compact_hash.dart:399:7)
#3 _LinkedHashMapMixin._insert (dart:collection-patch/compact_hash.dart:456:7)
#4 _LinkedHashMapMixin._set (dart:collection-patch/compact_hash.dart:511:7)
#5 _LinkedHashMapMixin.[]= (dart:collection-patch/compact_hash.dart:499:5)
#6 MapMixin.addAll.<anonymous closure> (dart:collection/maps.dart:129:11)
#7 _LinkedHashMapMixin.forEach (dart:collection-patch/compact_hash.dart:617:13)
#8 MapMixin.addAll (dart:collection/maps.dart:128:11)
#9 _InternalLinkedHashMap.addAll (dart:collection-patch/compact_hash.dart:301:11)
#10 DiagnosticsNode.toJsonMap.<anonymous closure>
package:flutter/…/foundation/diagnostics.dart:1646
#11 DiagnosticsNode.toJsonMap
package:flutter/…/foundation/diagnostics.dart:1661
#12 DiagnosticsProperty.toJsonMap
package:flutter/…/foundation/diagnostics.dart:2666
#13 DiagnosticsNode.toJsonList.<anonymous closure>
package:flutter/…/foundation/diagnostics.dart:1686
#14 MappedListIterable.elementAt (dart:_internal/iterable.dart:413:31)
#15 ListIterator.moveNext (dart:_internal/iterable.dart:342:26)
#16 new _GrowableList._ofEfficientLengthIterable (dart:core-patch/growable_array.dart:189:27)
#17 new _GrowableList.of (dart:core-patch/growable_array.dart:150:28)
#18 new List.of (dart:core-patch/array_patch.dart:51:28)
#19 ListIterable.toList (dart:_internal/iterable.dart:213:44)
#20 DiagnosticsNode.toJsonList
package:flutter/…/foundation/diagnostics.dart:1687
#21 DiagnosticsNode.toJsonMap.<anonymous closure>
package:flutter/…/foundation/diagnostics.dart:1648
#22 DiagnosticsNode.toJsonMap
package:flutter/…/foundation/diagnostics.dart:1661
#23 DiagnosticsNode.toJsonList.<anonymous closure>
package:flutter/…/foundation/diagnostics.dart:1686
#24 MappedListIterable.elementAt (dart:_internal/iterable.dart:413:31)
#25 ListIterator.moveNext (dart:_internal/iterable.dart:342:26)
#26 new _GrowableList._ofEfficientLengthIterable (dart:core-patch/growable_array.dart:189:27)
#27 new _GrowableList.of (dart:core-patch/growable_array.dart:150:28)
#28 new List.of (dart:core-patch/array_patch.dart:51:28)
#29 ListIterable.toList (dart:_internal/iterable.dart:213:44)
#30 DiagnosticsNode.toJsonList
package:flutter/…/foundation/diagnostics.dart:1687
#31 DiagnosticsNode.toJsonMap.<anonymous closure>
package:flutter/…/foundation/diagnostics.dart:1648
#32 DiagnosticsNode.toJsonMap
package:flutter/…/foundation/diagnostics.dart:1661
#33 WidgetInspectorService._nodeToJson
package:flutter/…/widgets/widget_inspector.dart:1606
#34 WidgetInspectorService._reportStructuredError
package:flutter/…/widgets/widget_inspector.dart:937
#35 FlutterError.reportError
package:flutter/…/foundation/assertions.dart:1184
#36 _debugReportException
package:flutter/…/widgets/framework.dart:6493
#37 ComponentElement.performRebuild
package:flutter/…/widgets/framework.dart:4908
#38 Element.rebuild
package:flutter/…/widgets/framework.dart:4604
#39 ComponentElement._firstBuild
package:flutter/…/widgets/framework.dart:4859
#40 ComponentElement.mount
package:flutter/…/widgets/framework.dart:4853
#41 Element.inflateWidget
package:flutter/…/widgets/framework.dart:3863
#42 Element.updateChild
package:flutter/…/widgets/framework.dart:3592
2
...
#4116 Element.rebuild
package:flutter/…/widgets/framework.dart:4604
#4117 ComponentElement._firstBuild
package:flutter/…/widgets/framework.dart:4859
#4118 StatefulElement._firstBuild
package:flutter/…/widgets/framework.dart:5041
#4119 ComponentElement.mount
package:flutter/…/widgets/framework.dart:4853
... Normal element mounting (27 frames)
Good afternoon,
I am following the tutorial on Windows 7 for an Ipad on IOS 9.3.5 :
https://medium.com/flutter-community/developing-and-debugging-flutter-apps-for-ios-without-a-mac-8d362a8ec667
and I'm stuck at rebuilding the Flutter Tool. (Last part of the tutorial)
I downloaded (from the link of the tutorial) and copied in C:\src\flutter\bin the libimobiledevice, ideviceinstaller and which binaries.
Then I ran the git apply ios.diff which gives me multiple errors, sometimes it's just about mac.dart, and sometimes it's more like this :
error: patch failed: packages/flutter_tools/lib/src/ios/devices.dart:103
error: packages/flutter_tools/lib/src/ios/devices.dart: patch does not apply
error: patch failed: packages/flutter_tools/lib/src/ios/ios_workflow.dart:26
error: packages/flutter_tools/lib/src/ios/ios_workflow.dart: patch does not apply
error: patch failed: packages/flutter_tools/lib/src/ios/mac.dart:124
error: packages/flutter_tools/lib/src/ios/mac.dart: patch does not apply
Then I found this command in here : git: patch does not apply
git apply --reject --whitespace=fix mychanges.patch
What I got was : (don't mind the content of the Future<String>, it's because I've already changed it to what it was supposed to be)
Checking patch packages/flutter_tools/lib/src/ios/mac.dart...
error: while searching for:
Future<String> getAvailableDeviceIDs() async {
try {
final ProcessResult result = await processManager.run(<String>['idevice_id', '-l']);
if (result.exitCode != 0)
throw ToolExit('idevice_id returned an error:\n${result.stderr}');
return result.stdout;
} on ProcessException {
throw ToolExit('Failed to invoke idevice_id. Run flutter doctor.');
error: patch failed: packages/flutter_tools/lib/src/ios/mac.dart:124
Applying patch packages/flutter_tools/lib/src/ios/devices.dart with 1 reject...
Rejected hunk #1.
Applying patch packages/flutter_tools/lib/src/ios/ios_workflow.dart with 1 reject...
Rejected hunk #1.
Applying patch packages/flutter_tools/lib/src/ios/mac.dart with 1 reject...
Rejected hunk #1.
At this point I manually pasted the right content in the mac.dart file (as you might have seen in the error above), but I am still not sure everything went well because of the :
error: patch failed: packages/flutter_tools/lib/src/ios/mac.dart:124
Anyway, I kept going and ran the command to rebuild the flutter tool:
bin\cache\dart-sdk\bin\dart --snapshot=.\bin\cache\flutter_tools.snapshot --packages=.\packages\flutter_tools\.packages .\packages\flutter_tools\bin\flutter_tools.dart
Finally, the output is this :
C:\src\flutter>bin\cache\dart-sdk\bin\dart --snapshot=.\bin\cache\flutter_tools.snapshot --packages=.\packages\flutter_tools\.packages .\
packages\flutter_tools\bin\flutter_tools.dart
packages/flutter_tools/lib/src/ios/ios_workflow.dart:20:30: Error: Getter not found: 'iMobileDevice'.
bool get canListDevices => iMobileDevice.isInstalled || (xcode.isInstalledAndMeetsVersionCheck && xcode.isSimctlInstalled);
^^^^^^^^^^^^^
packages/flutter_tools/lib/src/ios/ios_workflow.dart:20:30: Error: The getter 'iMobileDevice' isn't defined for the class 'IOSWorkflow'.
- 'IOSWorkflow' is from 'package:flutter_tools/src/ios/ios_workflow.dart' ('packages/flutter_tools/lib/src/ios/ios_workflow.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'iMobileDevice'.
bool get canListDevices => iMobileDevice.isInstalled || (xcode.isInstalledAndMeetsVersionCheck && xcode.isSimctlInstalled);
^^^^^^^^^^^^^
Is this "iMobileDevice" related to this libimobiledevice ? I can run any of the ideviceinstaller.exe or idevice_id.exe, so I guess I installed it correctly.
I am missing something important to correct this error ?
Thanks a lot for your time :)
in the "ios_workflow.dart" file you have to write this where the other 'import...' rows are:
import 'mac.dart';
For me, it's solved the problem.
Thanks a lot ! Importing 'mac.dart' allowed me to apply everything correctly.
I then ran flutter attach, and here is what I get : (I guess only the first lines are useful)
D:\Beerproject>flutter attach
Sending crash report to Google.
Crash report sent (report ID: 5d71ca5958062efd)
Oops; flutter has exited unexpectedly.
Sending crash report to Google.
Crash report sent (report ID: 5024a42feb468e2b)
Oops; flutter has exited unexpectedly.
Unhandled exception:
Unsupported operation: Control of iOS devices or simulators only supported on Mac OS.
#0 IOSDevice.getAttachedDevices (package:flutter_tools/src/ios/devices.dart:172:7)
<asynchronous suspension>
#1 IOSDevices.pollingGetDevices (package:flutter_tools/src/ios/devices.dart:117:57)
#2 PollingDeviceDiscovery.devices (package:flutter_tools/src/device.dart:270:52)
<asynchronous suspension>
#3 DeviceManager.getAllConnectedDevices (package:flutter_tools/src/device.dart:136:46)
<asynchronous suspension>
#4 DeviceValidator.validate (package:flutter_tools/src/doctor.dart:760:54)
<asynchronous suspension>
#5 Doctor.startValidatorTasks (package:flutter_tools/src/doctor.dart:140:52)
#6 Doctor.diagnose (package:flutter_tools/src/doctor.dart:211:41)
#7 _AsyncAwaitCompleter.start (dart:async-patch/async_patch.dart:43:6)
#8 Doctor.diagnose (package:flutter_tools/src/doctor.dart:201:24)
#9 _doctorText.<anonymous closure> (package:flutter_tools/runner.dart:202:26)
#10 AppContext.run.<anonymous closure> (package:flutter_tools/src/base/context.dart:154:29)
#11 _AsyncAwaitCompleter.start (dart:async-patch/async_patch.dart:43:6)
#12 AppContext.run.<anonymous closure> (package:flutter_tools/src/base/context.dart:154:7)
#13 _rootRun (dart:async/zone.dart:1124:13)
#14 _CustomZone.run (dart:async/zone.dart:1021:19)
#15 _runZoned (dart:async/zone.dart:1516:10)
#16 runZoned (dart:async/zone.dart:1463:12)
#17 AppContext.run (package:flutter_tools/src/base/context.dart:153:18)
#18 _AsyncAwaitCompleter.start (dart:async-patch/async_patch.dart:43:6)
#19 AppContext.run (package:flutter_tools/src/base/context.dart:140:19)
#20 _doctorText (package:flutter_tools/runner.dart:201:19)
#21 _AsyncAwaitCompleter.start (dart:async-patch/async_patch.dart:43:6)
#22 _doctorText (package:flutter_tools/runner.dart:197:27)
#23 _createLocalCrashReport (package:flutter_tools/runner.dart:179:32)
#24 _AsyncAwaitCompleter.start (dart:async-patch/async_patch.dart:43:6)
#25 _createLocalCrashReport (package:flutter_tools/runner.dart:164:37)
#26 _handleToolError (package:flutter_tools/runner.dart:134:33)
#27 _asyncThenWrapperHelper.<anonymous closure> (dart:async-patch/async_patch.dart:71:64)
#28 _rootRunUnary (dart:async/zone.dart:1132:38)
#29 _CustomZone.runUnary (dart:async/zone.dart:1029:19)
#30 _FutureListener.handleValue (dart:async/future_impl.dart:137:18)
#31 Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:678:45)
#32 Future._propagateToListeners (dart:async/future_impl.dart:707:32)
#33 Future._completeWithValue (dart:async/future_impl.dart:522:5)
#34 _AsyncAwaitCompleter.complete (dart:async-patch/async_patch.dart:30:15)
#35 _completeOnAsyncReturn (dart:async-patch/async_patch.dart:288:13)
#36 CrashReportSender.sendReport (package:flutter_tools/src/reporting/crash_reporting.dart)
#37 _asyncThenWrapperHelper.<anonymous closure> (dart:async-patch/async_patch.dart:71:64)
#38 _rootRunUnary (dart:async/zone.dart:1132:38)
#39 _CustomZone.runUnary (dart:async/zone.dart:1029:19)
#40 _FutureListener.handleValue (dart:async/future_impl.dart:137:18)
#41 Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:678:45)
#42 Future._propagateToListeners (dart:async/future_impl.dart:707:32)
#43 Future._complete (dart:async/future_impl.dart:512:7)
#44 Stream.fold.<anonymous closure> (dart:async/stream.dart:801:18)
#45 _rootRun (dart:async/zone.dart:1120:38)
#46 _CustomZone.run (dart:async/zone.dart:1021:19)
#47 _CustomZone.runGuarded (dart:async/zone.dart:923:7)
#48 _BufferingStreamSubscription._sendDone.sendDone (dart:async/stream_impl.dart:389:13)
#49 _BufferingStreamSubscription._sendDone (dart:async/stream_impl.dart:399:15)
#50 _BufferingStreamSubscription._close (dart:async/stream_impl.dart:283:7)
#51 _SinkTransformerStreamSubscription._close (dart:async/stream_transformers.dart:96:11)
#52 _EventSinkWrapper.close (dart:async/stream_transformers.dart:23:11)
#53 _StringAdapterSink.close (dart:convert/string_conversion.dart:249:11)
#54 _Utf8ConversionSink.close (dart:convert/string_conversion.dart:300:20)
#55 _ConverterStreamEventSink.close (dart:convert/chunked_conversion.dart:80:18)
#56 _SinkTransformerStreamSubscription._handleDone (dart:async/stream_transformers.dart:141:24)
#57 _rootRun (dart:async/zone.dart:1120:38)
#58 _CustomZone.run (dart:async/zone.dart:1021:19)
#59 _CustomZone.runGuarded (dart:async/zone.dart:923:7)
#60 _BufferingStreamSubscription._sendDone.sendDone (dart:async/stream_impl.dart:389:13)
#61 _BufferingStreamSubscription._sendDone (dart:async/stream_impl.dart:399:15)
#62 _BufferingStreamSubscription._close (dart:async/stream_impl.dart:283:7)
#63 _ForwardingStream._handleDone (dart:async/stream_pipe.dart:106:10)
#64 _ForwardingStreamSubscription._handleDone (dart:async/stream_pipe.dart:172:13)
#65 _rootRun (dart:async/zone.dart:1120:38)
#66 _CustomZone.run (dart:async/zone.dart:1021:19)
#67 _CustomZone.runGuarded (dart:async/zone.dart:923:7)
#68 _BufferingStreamSubscription._sendDone.sendDone (dart:async/stream_impl.dart:389:13)
#69 _BufferingStreamSubscription._sendDone (dart:async/stream_impl.dart:399:15)
#70 _BufferingStreamSubscription._close (dart:async/stream_impl.dart:283:7)
#71 _SinkTransformerStreamSubscription._close (dart:async/stream_transformers.dart:96:11)
#72 _EventSinkWrapper.close (dart:async/stream_transformers.dart:23:11)
#73 _Uint8ListConversionSink.close (dart:_http/http_impl.dart:577:13)
#74 _ConverterStreamEventSink.close (dart:convert/chunked_conversion.dart:80:18)
#75 _SinkTransformerStreamSubscription._handleDone (dart:async/stream_transformers.dart:141:24)
#76 _rootRun (dart:async/zone.dart:1120:38)
#77 _CustomZone.run (dart:async/zone.dart:1021:19)
#78 _CustomZone.runGuarded (dart:async/zone.dart:923:7)
#79 _BufferingStreamSubscription._sendDone.sendDone (dart:async/stream_impl.dart:389:13)
#80 _BufferingStreamSubscription._sendDone (dart:async/stream_impl.dart:399:15)
#81 _BufferingStreamSubscription._close (dart:async/stream_impl.dart:283:7)
#82 _SinkTransformerStreamSubscription._close (dart:async/stream_transformers.dart:96:11)
#83 _EventSinkWrapper.close (dart:async/stream_transformers.dart:23:11)
#84 _ByteAdapterSink.close (dart:convert/byte_conversion.dart:62:11)
#85 _FilterSink.close (dart:io/data_transformer.dart:637:11)
#86 _ConverterStreamEventSink.close (dart:convert/chunked_conversion.dart:80:18)
#87 _SinkTransformerStreamSubscription._handleDone (dart:async/stream_transformers.dart:141:24)
#88 _rootRun (dart:async/zone.dart:1120:38)
#89 _CustomZone.run (dart:async/zone.dart:1021:19)
#90 _CustomZone.runGuarded (dart:async/zone.dart:923:7)
#91 _BufferingStreamSubscription._sendDone.sendDone (dart:async/stream_impl.dart:389:13)
#92 _BufferingStreamSubscription._sendDone (dart:async/stream_impl.dart:399:15)
#93 _BufferingStreamSubscription._close (dart:async/stream_impl.dart:283:7)
#94 _ForwardingStream._handleDone (dart:async/stream_pipe.dart:106:10)
#95 _ForwardingStreamSubscription._handleDone (dart:async/stream_pipe.dart:172:13)
#96 _rootRun (dart:async/zone.dart:1120:38)
#97 _CustomZone.run (dart:async/zone.dart:1021:19)
#98 _CustomZone.runGuarded (dart:async/zone.dart:923:7)
#99 _BufferingStreamSubscription._sendDone.sendDone (dart:async/stream_impl.dart:389:13)
#100 _BufferingStreamSubscription._sendDone (dart:async/stream_impl.dart:399:15)
#101 _BufferingStreamSubscription._close (dart:async/stream_impl.dart:283:7)
#102 _SyncStreamControllerDispatch._sendDone (dart:async/stream_controller.dart:772:19)
#103 _StreamController._closeUnchecked (dart:async/stream_controller.dart:629:7)
#104 _StreamController.close (dart:async/stream_controller.dart:622:5)
#105 _HttpParser._closeIncoming (dart:_http/http_parser.dart:1037:23)
#106 _HttpParser._doParse (dart:_http/http_parser.dart:752:11)
#107 _HttpParser._parse (dart:_http/http_parser.dart:318:7)
#108 _HttpParser._onData (dart:_http/http_parser.dart:810:5)
#109 _rootRunUnary (dart:async/zone.dart:1132:38)
#110 _CustomZone.runUnary (dart:async/zone.dart:1029:19)
#111 _CustomZone.runUnaryGuarded (dart:async/zone.dart:931:7)
#112 _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:336:11)
#113 _BufferingStreamSubscription._add (dart:async/stream_impl.dart:263:7)
#114 _SyncStreamControllerDispatch._sendData (dart:async/stream_controller.dart:764:19)
#115 _StreamController._add (dart:async/stream_controller.dart:640:7)
#116 _StreamController.add (dart:async/stream_controller.dart:586:5)
#117 _Socket._onData (dart:io-patch/socket_patch.dart:1791:41)
#118 _rootRunUnary (dart:async/zone.dart:1132:38)
#119 _CustomZone.runUnary (dart:async/zone.dart:1029:19)
#120 _CustomZone.runUnaryGuarded (dart:async/zone.dart:931:7)
#121 _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:336:11)
#122 _BufferingStreamSubscription._add (dart:async/stream_impl.dart:263:7)
#123 _SyncStreamControllerDispatch._sendData (dart:async/stream_controller.dart:764:19)
#124 _StreamController._add (dart:async/stream_controller.dart:640:7)
#125 _StreamController.add (dart:async/stream_controller.dart:586:5)
#126 _RawSecureSocket._sendReadEvent (dart:io/secure_socket.dart:1004:19)
#127 _rootRun (dart:async/zone.dart:1120:38)
#128 _CustomZone.run (dart:async/zone.dart:1021:19)
#129 _CustomZone.runGuarded (dart:async/zone.dart:923:7)
#130 _CustomZone.bindCallbackGuarded.<anonymous closure> (dart:async/zone.dart:963:23)
#131 _rootRun (dart:async/zone.dart:1124:13)
#132 _CustomZone.run (dart:async/zone.dart:1021:19)
#133 _CustomZone.bindCallback.<anonymous closure> (dart:async/zone.dart:947:23)
#134 Timer._createTimer.<anonymous closure> (dart:async-patch/timer_patch.dart:21:15)
#135 _Timer._runTimers (dart:isolate-patch/timer_impl.dart:382:19)
#136 _Timer._handleMessage (dart:isolate-patch/timer_impl.dart:416:5)
#137 _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:172:12)
Did anyone ever got this error ?
EDIT : following this tutorial step by step didn't solve the problem ... (https://www.youtube.com/watch?v=jkWPQHLOAEw)
SOLVED : I finally ended up using the Mac of a friend. Maybe could work using a virtual machine as well.
I'm running my application in debug mode, and when i try to hotrestart or hotreload this error shows and the application finishes, this happened after I did flutter upgrade. I don't know where this error is my code, my application worked normally in release mode
NoSuchMethodError: The method 'isAfter' was called on null.
Receiver: null
Tried calling: isAfter(Instance of 'DateTime')
#0 Object.noSuchMethod (dart:core/runtime/lib/object_patch.dart:50:5)
#1 _ManifestAssetBundle.needsBuild (package:flutter_tools/src/asset.dart:91:41)
#2 HotRunner._updateDevFS (package:flutter_tools/src/run_hot.dart:311:44)
<asynchronous suspension>
#3 HotRunner._reloadSources (package:flutter_tools/src/run_hot.dart:622:47)
<asynchronous suspension>
#4 HotRunner.restart (package:flutter_tools/src/run_hot.dart:566:24)
<asynchronous suspension>
#5 HotRunner.handleTerminalCommand (package:flutter_tools/src/run_hot.dart:281:24)
<asynchronous suspension>
#6 ResidentRunner.processTerminalInput (package:flutter_tools/src/resident_runner.dart:890:15)
<asynchronous suspension>
#7 _rootRunUnary (dart:async/zone.dart:1132:38)
#8 _CustomZone.runUnary (dart:async/zone.dart:1029:19)
#9 _CustomZone.runUnaryGuarded (dart:async/zone.dart:931:7)
#10 _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:336:11)
#11 _BufferingStreamSubscription._add (dart:async/stream_impl.dart:263:7)
#12 _SyncBroadcastStreamController._sendData (dart:async/broadcast_stream_controller.dart:375:20)
#13 _BroadcastStreamController.add (dart:async/broadcast_stream_controller.dart:250:5)
#14 _AsBroadcastStreamController.add (dart:async/broadcast_stream_controller.dart:474:11)
#15 _rootRunUnary (dart:async/zone.dart:1132:38)
#16 _CustomZone.runUnary (dart:async/zone.dart:1029:19)
#17 _CustomZone.runUnaryGuarded (dart:async/zone.dart:931:7)
#18 _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:336:11)
#19 _BufferingStreamSubscription._add (dart:async/stream_impl.dart:263:7)
#20 _SinkTransformerStreamSubscription._add (dart:async/stream_transformers.dart:68:11)
#21 _EventSinkWrapper.add (dart:async/stream_transformers.dart:15:11)
#22 _StringAdapterSink.add (dart:convert/string_conversion.dart:236:11)
#23 _StringAdapterSink.addSlice (dart:convert/string_conversion.dart:241:7)
#24 _Utf8ConversionSink.addSlice (dart:convert/string_conversion.dart:312:20)
#25 _ErrorHandlingAsciiDecoderSink.addSlice (dart:convert/ascii.dart:252:17)
#26 _ErrorHandlingAsciiDecoderSink.add (dart:convert/ascii.dart:238:5)
#27 _ConverterStreamEventSink.add (dart:convert/chunked_conversion.dart:72:18)
#28 _SinkTransformerStreamSubscription._handleData (dart:async/stream_transformers.dart:120:24)
#29 _rootRunUnary (dart:async/zone.dart:1132:38)
#30 _CustomZone.runUnary (dart:async/zone.dart:1029:19)
#31 _CustomZone.runUnaryGuarded (dart:async/zone.dart:931:7)
#32 _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:336:11)
#33 _BufferingStreamSubscription._add (dart:async/stream_impl.dart:263:7)
#34 _SyncStreamController._sendData (dart:async/stream_controller.dart:764:19)
#35 _StreamController._add (dart:async/stream_controller.dart:640:7)
#36 _StreamController.add (dart:async/stream_controller.dart:586:5)
#37 _Socket._onData (dart:io/runtime/bin/socket_patch.dart:1774:41)
#38 _rootRunUnary (dart:async/zone.dart:1136:13)
#39 _CustomZone.runUnary (dart:async/zone.dart:1029:19)
#40 _CustomZone.runUnaryGuarded (dart:async/zone.dart:931:7)
#41 _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:336:11)
#42 _BufferingStreamSubscription._add (dart:async/stream_impl.dart:263:7)
#43 _SyncStreamController._sendData (dart:async/stream_controller.dart:764:19)
#44 _StreamController._add (dart:async/stream_controller.dart:640:7)
#45 _StreamController.add (dart:async/stream_controller.dart:586:5)
#46 new _RawSocket.<anonymous closure> (dart:io/runtime/bin/socket_patch.dart:1323:33)
#47 _NativeSocket.issueReadEvent.issue (dart:io/runtime/bin/socket_patch.dart:844:14)
#48 _microtaskLoop (dart:async/schedule_microtask.dart:41:21)
#49 _startMicrotaskLoop (dart:async/schedule_microtask.dart:50:5)
#50 _runPendingImmediateCallback (dart:isolate/runtime/lib/isolate_patch.dart:115:13)
#51 _RawReceivePortImpl._handleMessage (dart:isolate/runtime/lib/isolate_patch.dart:172:5)
I just want to add audio_service https://pub.dartlang.org/packages/audio_service#-readme-tab- to my App.
For play audio. But didn't get success.
Basically, I'm iOS developer so don't know much about android setup.
Where I have to create, MainApplication and If I try to change AndroidManifest.xml It give error message because android:name=".MainApplication". How it possible to change android:name. Flutter won't allow.
Please help me for android setup.
EDITED:
odChannel#ryanheise.com/audioService( 8223): Failed to handle method call
E/MethodChannel#ryanheise.com/audioService( 8223): java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v4.media.session.MediaControllerCompat.addQueueItem(android.support.v4.media.MediaDescriptionCompat, int)' on a null object reference
E/MethodChannel#ryanheise.com/audioService( 8223): at com.ryanheise.audioservice.AudioServicePlugin$ClientHandler.onMethodCall(AudioServicePlugin.java:392)
E/MethodChannel#ryanheise.com/audioService( 8223): at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:201)
E/MethodChannel#ryanheise.com/audioService( 8223): at io.flutter.embedding.engine.dart.DartMessenger.handleMessageFromDart(DartMessenger.java:88)
E/MethodChannel#ryanheise.com/audioService( 8223): at io.flutter.embedding.engine.FlutterJNI.handlePlatformMessage(FlutterJNI.java:202)
E/MethodChannel#ryanheise.com/audioService( 8223): at android.os.MessageQueue.nativePollOnce(Native Method)
E/MethodChannel#ryanheise.com/audioService( 8223): at android.os.MessageQueue.next(MessageQueue.java:329)
E/MethodChannel#ryanheise.com/audioService( 8223): at android.os.Looper.loop(Looper.java:142)
E/MethodChannel#ryanheise.com/audioService( 8223): at android.app.ActivityThread.main(ActivityThread.java:6375)
E/MethodChannel#ryanheise.com/audioService( 8223): at java.lang.reflect.Method.invoke(Native Method)
E/MethodChannel#ryanheise.com/audioService( 8223): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:912)
E/MethodChannel#ryanheise.com/audioService( 8223): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:802)
E/flutter ( 8223): [ERROR:flutter/lib/ui/ui_dart_state.cc(148)] Unhandled Exception: PlatformException(error, Attempt to invoke virtual method 'void android.support.v4.media.session.MediaControllerCompat.addQueueItem(android.support.v4.media.MediaDescriptionCompat, int)' on a null object reference, null)
E/flutter ( 8223): #0 StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:564:7)
E/flutter ( 8223): #1 MethodChannel.invokeMethod (package:flutter/src/services/platform_channel.dart:302:33)
E/flutter ( 8223): <asynchronous suspension>
E/flutter ( 8223): #2 AudioService.addQueueItemAt (package:audio_service/audio_service.dart:481:10)
E/flutter ( 8223): <asynchronous suspension>
E/flutter ( 8223): #3 _MyAppState.initializeAndroidPlayer (package:audio_player_service_example/main.dart:159:18)
E/flutter ( 8223): <asynchronous suspension>
E/flutter ( 8223): #4 _MyAppState.initState (package:audio_player_service_example/main.dart:124:5)
E/flutter ( 8223): #5 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3851:58)
E/flutter ( 8223): #6 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3716:5)
E/flutter ( 8223): #7 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2960:14)
E/flutter ( 8223): #8 Element.updateChild (package:flutter/src/widgets/framework.dart:2763:12)
E/flutter ( 8223): #9 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4881:14)
E/flutter ( 8223): #10 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2960:14)
E/flutter ( 8223): #11 Element.updateChild (package:flutter/src/widgets/framework.dart:2763:12)
E/flutter ( 8223): #12 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3752:16)
E/flutter ( 8223): #13 Element.rebuild (package:flutter/src/widgets/framework.dart:3564:5)
E/flutter ( 8223): #14 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3721:5)
E/flutter ( 8223): #15 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3716:5)
E/flutter ( 8223): #16 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2960:14)
E/flutter ( 8223): #17 Element.updateChild (package:flutter/src/widgets/framework.dart:2763:12)
E/flutter ( 8223): #18 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4881:14)
E/flutter ( 8223): #19 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2960:14)
E/flutter ( 8223): #20 Element.updateChild (package:flutter/src/widgets/framework.dart:2763:12)
E/flutter ( 8223): #21 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4881:14)
E/flutter ( 8223): #22 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2960:14)
E/flutter ( 8223): #23 Element.updateChild (package:flutter/src/widgets/framework.dart:2763:12)
E/flutter ( 8223): #24 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4881:14)
E/flutter ( 8223): #25 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2960:14)
E/flutter ( 8223): #26 Element.updateChild (package:flutter/src/widgets/framework.dart:2763:12)
E/flutter ( 8223): #27 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4881:14)
E/flutter ( 8223): #28 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2960:14)
E/flutter ( 8223): #29 Element.updateChild (package:flutter/src/widgets/framework.dart:2763:12)
E/flutter ( 8223): #30 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3752:16)
E/flutter ( 8223): #31 Element.rebuild (package:flutter/src/widgets/framework.dart:3564:5)
E/flutter ( 8223): #32 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3721:5)
E/flutter ( 8223): #33 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3869:11)
E/flutter ( 8223): #34 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3716:5)
E/flutter ( 8223): #35 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2960:14)
E/flutter ( 8223): #36 Element.updateChild (package:flutter/src/widgets/framework.dart:2763:12)
E/flutter ( 8223): #37 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3752:16)
E/flutter ( 8223): #38 Element.rebuild (package:flutter/src/widgets/framework.dart:3564:5)
E/flutter ( 8223): #39 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3721:5)
E/flutter ( 8223): #40 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3716:5)
E/flutter ( 8223): #41 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2960:14)
E/flutter ( 8223): #42 Element.updateChild (package:flutter/src/widgets/f
E/flutter ( 8223): [ERROR:flutter/lib/ui/ui_dart_state.cc(148)] Unhandled Exception: MissingPluginException(No implementation found for method initPlayerQueue on channel audio_player_service)
E/flutter ( 8223): #0 MethodChannel.invokeMethod (package:flutter/src/services/platform_channel.dart:300:7)
E/flutter ( 8223): <asynchronous suspension>
E/flutter ( 8223): #1 AudioPlayer.initPlayerQueue (package:audio_player_service/audio_player.dart:250:19)
E/flutter ( 8223): <asynchronous suspension>
E/flutter ( 8223): #2 _MyAppState.initPlayer (package:audio_player_service_example/main.dart:148:23)
E/flutter ( 8223): <asynchronous suspension>
E/flutter ( 8223): #3 _MyAppState.initState (package:audio_player_service_example/main.dart:126:5)
E/flutter ( 8223): #4 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3851:58)
E/flutter ( 8223): #5 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3716:5)
E/flutter ( 8223): #6 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2960:14)
E/flutter ( 8223): #7 Element.updateChild (package:flutter/src/widgets/framework.dart:2763:12)
E/flutter ( 8223): #8 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4881:14)
E/flutter ( 8223): #9 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2960:14)
E/flutter ( 8223): #10 Element.updateChild (package:flutter/src/widgets/framework.dart:2763:12)
E/flutter ( 8223): #11 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3752:16)
E/flutter ( 8223): #12 Element.rebuild (package:flutter/src/widgets/framework.dart:3564:5)
E/flutter ( 8223): #13 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3721:5)
E/flutter ( 8223): #14 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3716:5)
E/flutter ( 8223): #15 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2960:14)
E/flutter ( 8223): #16 Element.updateChild (package:flutter/src/widgets/framework.dart:2763:12)
E/flutter ( 8223): #17 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4881:14)
E/flutter ( 8223): #18 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2960:14)
E/flutter ( 8223): #19 Element.updateChild (package:flutter/src/widgets/framework.dart:2763:12)
E/flutter ( 8223): #20 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4881:14)
E/flutter ( 8223): #21 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2960:14)
E/flutter ( 8223): #22 Element.updateChild (package:flutter/src/widgets/framework.dart:2763:12)
E/flutter ( 8223): #23 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4881:14)
E/flutter ( 8223): #24 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2960:14)
E/flutter ( 8223): #25 Element.updateChild (package:flutter/src/widgets/framework.dart:2763:12)
E/flutter ( 8223): #26 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4881:14)
E/flutter ( 8223): #27 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2960:14)
E/flutter ( 8223): #28 Element.updateChild (package:flutter/src/widgets/framework.dart:2763:12)
E/flutter ( 8223): #29 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3752:16)
E/flutter ( 8223): #30 Element.rebuild (package:flutter/src/widgets/framework.dart:3564:5)
E/flutter ( 8223): #31 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3721:5)
E/flutter ( 8223): #32 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3869:11)
E/flutter ( 8223): #33 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3716:5)
E/flutter ( 8223): #34 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2960:14)
E/flutter ( 8223): #35 Element.updateChild (package:flutter/src/widgets/framework.dart:2763:12)
E/flutter ( 8223): #36 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3752:16)
E/flutter ( 8223): #37 Element.rebuild (package:flutter/src/widgets/framework.dart:3564:5)
E/flutter ( 8223): #38 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3721:5)
E/flutter ( 8223): #39 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3716:5)
E/flutter ( 8223): #40 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2960:14)
E/flutter ( 8223): #41 Element.updateChild (package:flutter/src/widgets/framework.dart:2763:12)
E/flutter ( 8223): #42 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3752:16)
E/flutter ( 8223): #43 Element.rebuild (package:flutter/src/widgets/framework.dart:3564:5)
E/flutter ( 8223): #44 ComponentElement._firs
You can create MainApplication class in Android studio. Take a look at these screenshots.
Just add this right before the </application> in the AndroidManifest.xml file.
<service android:name="com.ryanheise.audioservice.AudioService">
<intent-filter>
<action android:name="android.media.browse.MediaBrowserService" />
</intent-filter>
</service>
<receiver android:name="android.support.v4.media.session.MediaButtonReceiver" >
<intent-filter>
<action android:name="android.intent.action.MEDIA_BUTTON" />
</intent-filter>
</receiver>
I am attempting the same thing, and when I add the service and receiver tags to AndroidManifest.xml, I am getting an error, which might be the same problem you are having:
Class referenced in the manifest, com.ryanheise.audioservice.AudioService, was not found in the project or the libraries / Unresolved package 'audioservice'
And yes, I have audio_service as a dependency in my pubspec.yaml, and yes I did Pub Get.
I don't know why this error is happening, but I can't imagine that audio_service could run without this.
I tried this code to load and read a txt file. But it can't read file and returns "Couldn't read file" message.
Future<String> _read() async {
String text;
try {
final directory = await getApplicationDocumentsDirectory();
final file = File('${directory.path}/table.txt');
text = await file.readAsString();
} catch (e) {
print("Couldn't read file");
}
return text;
}
I set my txt file in a folder(data) in the directory of the project.I tried it with final file = File('${directory.path}/data/table.txt'); too. This is my "pubspec.yaml" file:
flutter:
assets:
- data/table.txt
I get this error:
I/flutter ( 2067): ══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════
I/flutter ( 2067): The following assertion was thrown building MyApp(dirty):
I/flutter ( 2067): 'package:flutter/src/widgets/text.dart': Failed assertion: line 235 pos 15: 'data != null': is not
I/flutter ( 2067): true.
I/flutter ( 2067):
I/flutter ( 2067): Either the assertion indicates an error in the framework itself, or we should provide substantially
I/flutter ( 2067): more information in this error message to help you determine and fix the underlying cause.
I/flutter ( 2067): In either case, please report this assertion by filing a bug on GitHub:
I/flutter ( 2067): https://github.com/flutter/flutter/issues/new?template=BUG.md
I/flutter ( 2067):
I/flutter ( 2067): When the exception was thrown, this was the stack:
I/flutter ( 2067): #2 new Text
package:flutter/…/widgets/text.dart:235
I/flutter ( 2067): #3 MyApp.build
package:hello_flutter/main.dart:90
I/flutter ( 2067): #4 StatelessElement.build
package:flutter/…/widgets/framework.dart:3774
I/flutter ( 2067): #5 ComponentElement.performRebuild
package:flutter/…/widgets/framework.dart:3721
I/flutter ( 2067): #6 Element.rebuild
package:flutter/…/widgets/framework.dart:3547
I/flutter ( 2067): #7 BuildOwner.buildScope
package:flutter/…/widgets/framework.dart:2286
I/flutter ( 2067): #8 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&SemanticsBinding&RendererBinding&WidgetsBinding.drawFrame
package:flutter/…/widgets/binding.dart:676
I/flutter ( 2067): #9 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&SemanticsBinding&RendererBinding._handlePersistentFrameCallback
package:flutter/…/rendering/binding.dart:219
I/flutter ( 2067): #10 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding._invokeFrameCallback
package:flutter/…/scheduler/binding.dart:990
I/flutter ( 2067): #11 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding.handleDrawFrame
package:flutter/…/scheduler/binding.dart:930
I/flutter ( 2067): #12 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding.scheduleWarmUpFrame.<anonymous closure>
package:flutter/…/scheduler/binding.dart:751
I/flutter ( 2067): #14 _Timer._runTimers (dart:isolate/runtime/libtimer_impl.dart:382:19)
I/flutter ( 2067): #15 _Timer._handleMessage (dart:isolate/runtime/libtimer_impl.dart:416:5)
I/flutter ( 2067): #16 _RawReceivePortImpl._handleMessage (dart:isolate/runtime/libisolate_pat
ch.dart:171:12)
I/flutter ( 2067): (elided 3 frames from class _AssertionError and package dart:async)
I/flutter ( 2067): ════════════════════════════════════════════════════════════════════════════════════════════════════
I/flutter ( 2067): Couldn't read file
I/flutter ( 2067): null
Reloaded 1 of 420 libraries in ۱٬۱۰۴ms.
Add the full path in pubspec.yaml file:
flutter:
assets:
- assets/data/table.txt
you should create an assets folder inside your main project directory where folders such as : lib , build and IOS reside and put your data directory inside it, then add the aforementioned lines and run the command flutter packages get and after completion it will work fine.