I wanted to use google play services in my flutter application for which i used games_services plugin. I followed all the steps in this medium post. But it still gave me this error.
E/flutter (27643): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: PlatformException(error, 4: 4: , null)
E/flutter (27643): #0 StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:569)
E/flutter (27643): #1 MethodChannel.invokeMethod (package:flutter/src/services/platform_channel.dart:321)
E/flutter (27643): <asynchronous suspension>
E/flutter (27643): #2 GamesServices.signIn (package:games_services/games_services.dart:52)
E/flutter (27643): #3 _WelcomePageState.build.<anonymous closure> (package:quizbee/pages/home/welcome.dart:182)
E/flutter (27643): #4 _InkResponseState._handleTap (package:flutter/src/material/ink_well.dart:706)
E/flutter (27643): #5 _InkResponseState.build.<anonymous closure> (package:flutter/src/material/ink_well.dart:789)
E/flutter (27643): #6 GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:182)
E/flutter (27643): #7 TapGestureRecognizer.handleTapUp (package:flutter/src/gestures/tap.dart:486)
E/flutter (27643): #8 BaseTapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:282)
E/flutter (27643): #9 BaseTapGestureRecognizer.handlePrimaryPointer (package:flutter/src/gestures/tap.dart:199)
E/flutter (27643): #10 PrimaryPointerGestureRecognizer.handleEvent (package:flutter/src/gestures/recognizer.dart:467)
E/flutter (27643): #11 PointerRouter._dispatch (package:flutter/src/gestures/pointer_router.dart:76)
E/flutter (27643): #12 PointerRouter._dispatchEventToRoutes.<anonymous closure> (package:flutter/src/gestures/pointer_router.dart:117)
E/flutter (27643): #13 _LinkedHashMapMixin.forEach (dart:collection-patch/compact_hash.dart:379)
E/flutter (27643): #14 PointerRouter._dispatchEventToRoutes (package:flutter/src/gestures/pointer_router.dart:115)
E/flutter (27643): #15 PointerRouter.route (package:flutter/src/gestures/pointer_router.dart:101)
E/flutter (27643): #16 GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:218)
E/flutter (27643): #17 GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:198)
E/flutter (27643): #18 GestureBinding._handlePointerEvent (package:flutter/src/gestures/binding.dart:156)
E/flutter (27643): #19 GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:102)
E/flutter (27643): #20 GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:86)
E/flutter (27643): #21 _rootRunUnary (dart:async/zone.dart:1138)
E/flutter (27643): #22 _CustomZone.runUnary (dart:async/zone.dart:1031)
E/flutter (27643): #23 _CustomZone.runUnaryGuarded (dart:async/zone.dart:933)
E/flutter (27643): #24 _invoke1 (dart:ui/hooks.dart:273)
E/flutter (27643): #25 _dispatchPointerDataPacket (dart:ui/hooks.dart:182)
Thank You in advance.
Related
when I am trying to make an HTTP request in flutter I am receiving these errors on a particular API and I am unable to figure out what it means and how to resolve this error is it API is working properly in postman and browser
> E/flutter (15337): [ERROR:flutter/lib/ui/ui_dart_state.cc(199)] Unhandled Exception: FormatException: Filter error, bad data
E/flutter (15337): #0 _FilterImpl.processed (dart:io-patch/filter_patch.dart:11:32)
E/flutter (15337): #1 _FilterSink.addSlice (dart:io/data_transformer.dart:537:29)
E/flutter (15337): #2 _FilterSink.add (dart:io/data_transformer.dart:521:5)
E/flutter (15337): #3 _ConverterStreamEventSink.add (dart:convert/chunked_conversion.dart:72:18)
E/flutter (15337): #4 _SinkTransformerStreamSubscription._handleData (dart:async/stream_transformers.dart:111:24)
E/flutter (15337): #5 _rootRunUnary (dart:async/zone.dart:1362:47)
E/flutter (15337): #6 _CustomZone.runUnary (dart:async/zone.dart:1265:19)
E/flutter (15337): #7 _CustomZone.runUnaryGuarded (dart:async/zone.dart:1170:7)
E/flutter (15337): #8 CastStreamSubscription._onData (dart:_internal/async_cast.dart:85:11)
E/flutter (15337): #9 _rootRunUnary (dart:async/zone.dart:1362:47)
E/flutter (15337): #10 _CustomZone.runUnary (dart:async/zone.dart:1265:19)
E/flutter (15337): #11 _CustomZone.runUnaryGuarded (dart:async/zone.dart:1170:7)
E/flutter (15337): #12 _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:341:11)
E/flutter (15337): #13 _BufferingStreamSubscription._add (dart:async/stream_impl.dart:271:7)
E/flutter (15337): #14 _ForwardingStreamSubscription._add (dart:async/stream_pipe.dart:123:11)
E/flutter (15337): #15 _HandleErrorStream._handleData (dart:async/stream_pipe.dart:256:10)
E/flutter (15337): #16 _ForwardingStreamSubscription._handleData (dart:async/stream_pipe.dart:153:13)
E/flutter (15337): #17 _rootRunUnary (dart:async/zone.dart:1362:47)
E/flutter (15337): #18 _CustomZone.runUnary (dart:async/zone.dart:1265:19)
E/flutter (15337): #19 _CustomZone.runUnaryGuarded (dart:async/zone.dart:1170:7)
E/flutter (15337): #20 _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:341:11)
E/flutter (15337): #21 _DelayedData.perform (dart:async/stream_impl.dart:591:14)
E/flutter (15337): #22 _StreamImplEvents.handleNext (dart:async/stream_impl.dart:706:11)
E/flutter (15337): #23 _PendingEvents.schedule.<anonymous closure> (dart:async/stream_impl.dart:663:7)
E/flutter (15337): #24 _rootRun (dart:async/zone.dart:1346:47)
E/flutter (15337): #25 _CustomZone.run (dart:async/zone.dart:1258:19)
E/flutter (15337): #26 _CustomZone.runGuarded (dart:async/zone.dart:1162:7)
E/flutter (15337): #27 _CustomZone.bindCallbackGuarded.<anonymous closure> (dart:async/zone.dart:1202:23)
E/flutter (15337): #28 _rootRun (dart:async/zone.dart:1354:13)
E/flutter (15337): #29 _CustomZone.run (dart:async/zone.dart:1258:19)
E/flutter (15337): #30 _CustomZone.runGuarded (dart:async/zone.dart:1162:7)
E/flutter (15337): #31 _CustomZone.bindCallbackGuarded.<anonymous closure> (dart:async/zone.dart:1202:23)
E/flutter (15337): #32 _microtaskLoop (dart:async/schedule_microtask.dart:40:21)
E/flutter (15337): #33 _startMicrotaskLoop (dart:async/schedule_microtask.dart:49:5)
E/flutter (15337):
I have tried adding other API which is am using in my application and code is working properly but for it is giving above exception and stops after HTTP call.
Future<Null> getNewHomeData() async {
setState(() {
loading = true;
});
final response = await http.get(Uri.parse(Uri.encodeFull(APIs.url_HomePage)));
print(response.statusCode);
print(response.body);
try {
print(response.body);
if(response.statusCode == 200){
final home = homeNewFromJson(response.body);
homeBanner = home.advImg;
homeContent = home.infoText;
shopCat = home.shopCat;
storeImg = home.storeImg;
topSellings = home.topSellings;
modularFurniture = home.modularFurniture;
decorFurniture = home.decorFurniture;
banner1 = home.banner1;
banner2 = home.banner2;
banner3 = home.banner3;
banner4 = home.banner4;
banner5 = home.banner5;
}
} on Exception catch (e) {
print(e);
}
on tap submit subbmit method call .
[1]: https://i.stack.imgur.com/glYah.png
error :
successful
E/flutter (11575): [ERROR:flutter/lib/ui/ui_dart_state.cc(199)] Unhandled Exception: NoSuchMethodError: The method 'readAsBytesSync' was called on null.
E/flutter (11575): Receiver: null
E/flutter (11575): Tried calling: readAsBytesSync()
E/flutter (11575): #0 Object.noSuchMethod (dart:core-patch/object_patch.dart:54:5)
E/flutter (11575): #1 _Delivery_DetailsState.submitForm (package:shop_me/src/screens/product_delivery/ui/delivery_detail.dart:500:37)
E/flutter (11575): #2 _Delivery_DetailsState.build. (package:shop_me/src/screens/product_delivery/ui/delivery_detail.dart:384:33)
E/flutter (11575): #3 _InkResponseState._handleTap (package:flutter/src/material/ink_well.dart:989:21)
E/flutter (11575): #4 GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:182:24)
E/flutter (11575): #5 TapGestureRecognizer.handleTapUp (package:flutter/src/gestures/tap.dart:607:11)
E/flutter (11575): #6 BaseTapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:296:5)
E/flutter (11575): #7 BaseTapGestureRecognizer.acceptGesture (package:flutter/src/gestures/tap.dart:267:7)
E/flutter (11575): #8 GestureArenaManager.sweep (package:flutter/src/gestures/arena.dart:157:27)
E/flutter (11575): #9 GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:443:20)
E/flutter (11575): #10 GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:419:22)
E/flutter (11575): #11 RendererBinding.dispatchEvent (package:flutter/src/rendering/binding.dart:287:11)
E/flutter (11575): #12 GestureBinding._handlePointerEventImmediately (package:flutter/src/gestures/binding.dart:374:7)
E/flutter (11575): #13 GestureBinding.handlePointerEvent (package:flutter/src/gestures/binding.dart:338:5)
E/flutter (11575): #14 GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:296:7)
E/flutter (11575): #15 GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:279:7)
E/flutter (11575): #16 _rootRunUnary (dart:async/zone.dart:1370:13)
E/flutter (11575): #17 _CustomZone.runUnary (dart:async/zone.dart:1265:19)
E/flutter (11575): #18 _CustomZone.runUnaryGuarded (dart:async/zone.dart:1170:7)
E/flutter (11575): #19 _invoke1 (dart:ui/hooks.dart:182:10)
E/flutter (11575): #20 PlatformDispatcher._dispatchPointerDataPacket (dart:ui/platform_dispatcher.dart:282:7)
E/flutter (11575): #21 _dispatchPointerDataPacket (dart:ui/hooks.dart:96:31)
E/flutter (11575):
I'm trying to login in Flutter and this is the error I'm getting when I try to login with a Google email:
E/flutter (26329): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: NoSuchMethodError: The method '[]' was called on null.
`enter code here`E/flutter (26329): Receiver: null
E/flutter (26329): Tried calling: []("email")
E/flutter (26329): #0 Object.noSuchMethod (dart:core-patch/object_patch.dart:53:5)
E/flutter (26329): #1 DocumentSnapshot.[] (package:cloud_firestore/src/document_snapshot.dart:29:42)
E/flutter (26329): #2 new User.fromDocument (package:buddiesgram/models/user.dart:23:17)
E/flutter (26329): #3 _HomePageState.saveUserInfoFirestore (package:buddiesgram/pages/HomePage.dart:83:26)
E/flutter (26329): <asynchronous suspension>
E/flutter (26329): #4 _HomePageState.controlSignIn (package:buddiesgram/pages/HomePage.dart:54:13)
E/flutter (26329): #5 _HomePageState.initState.<anonymous closure> (package:buddiesgram/pages/HomePage.dart:40:9)
E/flutter (26329): #6 _rootRunUnary (dart:async/zone.dart:1192:38)
E/flutter (26329): #7 _CustomZone.runUnary (dart:async/zone.dart:1085:19)
E/flutter (26329): #8 _CustomZone.runUnaryGuarded (dart:async/zone.dart:987:7)
E/flutter (26329): #9 _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:339:11)
E/flutter (26329): #10 _DelayedData.perform (dart:async/stream_impl.dart:594:14)
E/flutter (26329): #11 _StreamImplEvents.handleNext (dart:async/stream_impl.dart:710:11)
E/flutter (26329): #12 _PendingEvents.schedule.<anonymous closure> *emphasized text*(dart:async/stream_impl.dart:670:7)
E/flutter (26329): #13 _rootRun (dart:async/zone.dart:1180:38)
E/flutter (26329): #14 _CustomZone.run (dart:async/zone.dart:1077:19)
E/flutter (26329): #15 _CustomZone.runGuarded (dart:async/zone.dart:979:7)
E/flutter (26329): #16 _CustomZone.bindCallbackGuarded.<anonymous closure> (dart:async/zone.dart:1019:23)`**`*enter code here*`**`
E/flutter (26329): #17 _rootRun (dart:async/zone.dart:1184:13)
E/flutter (26329): #18 _CustomZone.run (dart:async/zone.dart:1077:19)
E/flutter (26329): #19 _CustomZone.runGuarded (dart:async/zone.dart:979:7)
E/flutter (26329): #20 _CustomZone.bindCallbackGuarded.<anonymous closure> (dart:async/zone.dart:1019:23)
E/flutter (26329): #21 _microtaskLoop (dart:async/schedule_microtask.dart:43:21)
E/flutter (26329): #22 _startMicrotaskLoop (dart:async/schedule_microtask.dart:52:5)
E/flutter (26329):
What am I missing?
Please include a code snippet of what you are trying to do
In my understanding of your stackTrace you are trying to call list on a null object like this:
final UserData userData = someObjectHere;
function login(UserData userData){
//The problem is that userData might be null which causes your issue
String email = userData[]("Email");
}
You're solution might be to use null aware operators or to manually check whether the object you're calling a method on is not null.
String email = userData?.[]("Email");
or
if(userData != null) String email = userData?.[]("Email");
My app uses a webview to show my terms and conditions. I make use of the "webview_flutter" package to do that. When I install my app via "flutter run --release", everything works fine and my website is perfectly loaded. When I submit my app to google play in production mode, I get an error when trying to open my webview. Any idea what could cause that error?
I double checked pretty much everything. Error occurs only when installed on my Android devices via google play, but everything works fine when installed via USB cable.
WebView(initialUrl: 'https://xyz.abc/terms')
Expected: Webview should load
Error instead:
[ERROR:flutter/lib/ui/ui_dart_state.cc(148)] Unhandled Exception: PlatformException(error, Attempt to invoke virtual method 'int ja
va.lang.Integer.intValue()' on a null object reference, null)
E/flutter (31498): #0 StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:564)
E/flutter (31498): #1 MethodChannel.invokeMethod (package:flutter/src/services/platform_channel.dart:316)
E/flutter (31498): <asynchronous suspension>
E/flutter (31498): #2 AndroidViewController._create (package:flutter/src/services/platform_views.dart:639)
E/flutter (31498): <asynchronous suspension>
E/flutter (31498): #3 AndroidViewController.setSize (package:flutter/src/services/platform_views.dart:556)
E/flutter (31498): <asynchronous suspension>
E/flutter (31498): #4 RenderAndroidView._sizePlatformView (package:flutter/src/rendering/platform_view.dart:189)
E/flutter (31498): <asynchronous suspension>
E/flutter (31498): #5 RenderAndroidView.performResize (package:flutter/src/rendering/platform_view.dart:170)
E/flutter (31498): #6 RenderObject.layout (package:flutter/src/rendering/object.dart:1604)
E/flutter (31498): #7 _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy
_box.dart:105)
E/flutter (31498): #8 RenderObject.layout (package:flutter/src/rendering/object.dart:1619)
E/flutter (31498): #9 RenderFlex.performLayout (package:flutter/src/rendering/flex.dart:805)
E/flutter (31498): #10 RenderObject.layout (package:flutter/src/rendering/object.dart:1619)
E/flutter (31498): #11 RenderPadding.performLayout (package:flutter/src/rendering/shifted_box.dart:206)
E/flutter (31498): #12 RenderObject.layout (package:flutter/src/rendering/object.dart:1619)
E/flutter (31498): #13 _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy
_box.dart:105)
E/flutter (31498): #14 RenderObject.layout (package:flutter/src/rendering/object.dart:1619)
E/flutter (31498): #15 RenderConstrainedBox.performLayout (package:flutter/src/rendering/proxy_box.dart:259)
E/flutter (31498): #16 RenderObject.layout (package:flutter/src/rendering/object.dart:1619)
E/flutter (31498): #17 RenderPadding.performLayout (package:flutter/src/rendering/shifted_box.dart:206)
E/flutter (31498): #18 RenderObject.layout (package:flutter/src/rendering/object.dart:1619)
E/flutter (31498): #19 RenderStack.performLayout (package:flutter/src/rendering/stack.dart:510)
E/flutter (31498): #20 RenderObject._layoutWithoutResize (package:flutter/src/rendering/object.dart:1496)
E/flutter (31498): #21 PipelineOwner.flushLayout (package:flutter/src/rendering/object.dart:765)
E/flutter (31498): #22 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&SemanticsBinding&Rendere
rBinding.drawFrame (package:flutter/src/rendering/binding.dart:346)
E/flutter (31498): #23 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&SemanticsBinding&Rendere
rBinding&WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:701)
E/flutter (31498): #24 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&SemanticsBinding&Rendere
rBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:285)
E/flutter (31498): #25 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding._invokeFrameCallback (package:flutter/sr
c/scheduler/binding.dart:1016)
E/flutter (31498): #26 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding.handleDrawFrame (package:flutter/src/sch
eduler/binding.dart:958)
E/flutter (31498): #27 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding._handleDrawFrame (package:flutter/src/sc
heduler/binding.dart:874)
E/flutter (31498): #28 _rootRun (dart:async/zone.dart:1124)
E/flutter (31498): #29 _CustomZone.run (dart:async/zone.dart:1021)
E/flutter (31498): #30 _CustomZone.runGuarded (dart:async/zone.dart:923)
E/flutter (31498): #31 _invoke (dart:ui/hooks.dart:236)
E/flutter (31498): #32 _drawFrame (dart:ui/hooks.dart:194)
I am trying to run a QR code reader app on my S7 Edge (Android 7) via Flutter in Android Studio.
Here is a link to the code for the example: https://pub.dartlang.org/packages/qrcode_reader#-example-tab-
When I run the app, it shows up on my phone but if I click the button it gives me this output (includes me trying to click the scan button multiple times to no avail):
PLEASE READ EDIT BELOW
E/flutter (31215): [ERROR:topaz/lib/tonic/logging/dart_error.cc(16)] Unhandled exception:
E/flutter (31215): MissingPluginException(No implementation found for method readQRCode on channel qrcode_reader)
E/flutter (31215): #0 MethodChannel.invokeMethod (package:flutter/src/services/platform_channel.dart:278:7)
E/flutter (31215): <asynchronous suspension>
E/flutter (31215): #1 QRCodeReader.scan (package:qrcode_reader/QRCodeReader.dart:67:27)
E/flutter (31215): <asynchronous suspension>
E/flutter (31215): #2 _MyHomePageState.build.<anonymous closure>.<anonymous closure> (file:///C:/Users/x/AndroidStudioProjects/qr_cod
E/lib/main.dart:56:10)
E/flutter (31215): #3 State.setState (package:flutter/src/widgets/framework.dart:1117:30)
E/flutter (31215): #4 _MyHomePageState.build.<anonymous closure> (file:///C:/Users/x/AndroidStudioProjects/qr_cod
E/lib/main.dart:49:6)
E/flutter (31215): #5 _InkResponseState._handleTap (package:flutter/src/material/ink_well.dart:494:14)
E/flutter (31215): #6 _InkResponseState.build.<anonymous closure> (package:flutter/src/material/ink_well.dart:549:30)
E/flutter (31215): #7 GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:102:24)
E/flutter (31215): #8 TapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:161:9)
E/flutter (31215): #9 TapGestureRecognizer.handlePrimaryPointer (package:flutter/src/gestures/tap.dart:94:7)
E/flutter (31215): #10 PrimaryPointerGestureRecognizer.handleEvent (package:flutter/src/gestures/recognizer.dart:315:9)
E/flutter (31215): #11 PointerRouter._dispatch (package:flutter/src/gestures/pointer_router.dart:73:12)
E/flutter (31215): #12 PointerRouter.route (package:flutter/src/gestures/pointer_router.dart:101:11)
E/flutter (31215): #13 _WidgetsFlutterBinding&BindingBase&GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:143:19)
E/flutter (31215): #14 _WidgetsFlutterBinding&BindingBase&GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:121:22)
E/flutter (31215): #15 _WidgetsFlutterBinding&BindingBase&GestureBinding._handlePointerEvent (package:flutter/src/gestures/binding.dart:101:7)
E/flutter (31215): #16 _WidgetsFlutterBinding&BindingBase&GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:64:7)
E/flutter (31215): #17 _WidgetsFlutterBinding&BindingBase&GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:48:7)
E/flutter (31215): #18 _invoke1 (dart:ui/hooks.dart:134:13)
E/flutter (31215): #19 _dispatchPointerDataPacket (dart:ui/hooks.dart:91:5)
D/ViewRootImpl#526fccd[MainActivity](31215): ViewPostImeInputStage processPointer 0
D/ViewRootImpl#526fccd[MainActivity](31215): ViewPostImeInputStage processPointer 1
E/flutter (31215): [ERROR:topaz/lib/tonic/logging/dart_error.cc(16)] Unhandled exception:
E/flutter (31215): MissingPluginException(No implementation found for method readQRCode on channel qrcode_reader)
E/flutter (31215): #0 MethodChannel.invokeMethod (package:flutter/src/services/platform_channel.dart:278:7)
E/flutter (31215): <asynchronous suspension>
E/flutter (31215): #1 QRCodeReader.scan (package:qrcode_reader/QRCodeReader.dart:67:27)
E/flutter (31215): <asynchronous suspension>
E/flutter (31215): #2 _MyHomePageState.build.<anonymous closure>.<anonymous closure> (file:///C:/Users/x/AndroidStudioProjects/qr_cod
E/lib/main.dart:56:10)
E/flutter (31215): #3 State.setState (package:flutter/src/widgets/framework.dart:1117:30)
E/flutter (31215): #4 _MyHomePageState.build.<anonymous closure> (file:///C:/Users/x/AndroidStudioProjects/qr_cod
E/lib/main.dart:49:6)
E/flutter (31215): #5 _InkResponseState._handleTap (package:flutter/src/material/ink_well.dart:494:14)
E/flutter (31215): #6 _InkResponseState.build.<anonymous closure> (package:flutter/src/material/ink_well.dart:549:30)
E/flutter (31215): #7 GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:102:24)
E/flutter (31215): #8 TapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:161:9)
E/flutter (31215): #9 TapGestureRecognizer.handlePrimaryPointer (package:flutter/src/gestures/tap.dart:94:7)
E/flutter (31215): #10 PrimaryPointerGestureRecognizer.handleEvent (package:flutter/src/gestures/recognizer.dart:315:9)
E/flutter (31215): #11 PointerRouter._dispatch (package:flutter/src/gestures/pointer_router.dart:73:12)
E/flutter (31215): #12 PointerRouter.route (package:flutter/src/gestures/pointer_router.dart:101:11)
E/flutter (31215): #13 _WidgetsFlutterBinding&BindingBase&GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:143:19)
E/flutter (31215): #14 _WidgetsFlutterBinding&BindingBase&GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:121:22)
E/flutter (31215): #15 _WidgetsFlutterBinding&BindingBase&GestureBinding._handlePointerEvent (package:flutter/src/gestures/binding.dart:101:7)
E/flutter (31215): #16 _WidgetsFlutterBinding&BindingBase&GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:64:7)
E/flutter (31215): #17 _WidgetsFlutterBinding&BindingBase&GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:48:7)
E/flutter (31215): #18 _invoke1 (dart:ui/hooks.dart:134:13)
E/flutter (31215): #19 _dispatchPointerDataPacket (dart:ui/hooks.dart:91:5)
D/ViewRootImpl#526fccd[MainActivity](31215): ViewPostImeInputStage processPointer 0
D/ViewRootImpl#526fccd[MainActivity](31215): ViewPostImeInputStage processPointer 1
E/flutter (31215): [ERROR:topaz/lib/tonic/logging/dart_error.cc(16)] Unhandled exception:
E/flutter (31215): MissingPluginException(No implementation found for method readQRCode on channel qrcode_reader)
E/flutter (31215): #0 MethodChannel.invokeMethod (package:flutter/src/services/platform_channel.dart:278:7)
E/flutter (31215): <asynchronous suspension>
E/flutter (31215): #1 QRCodeReader.scan (package:qrcode_reader/QRCodeReader.dart:67:27)
E/flutter (31215): <asynchronous suspension>
E/flutter (31215): #2 _MyHomePageState.build.<anonymous closure>.<anonymous closure> (file:///C:/Users/x/AndroidStudioProjects/qr_cod
E/lib/main.dart:56:10)
E/flutter (31215): #3 State.setState (package:flutter/src/widgets/framework.dart:1117:30)
E/flutter (31215): #4 _MyHomePageState.build.<anonymous closure> (file:///C:/Users/x/AndroidStudioProjects/qr_cod
E/lib/main.dart:49:6)
E/flutter (31215): #5 _InkResponseState._handleTap (package:flutter/src/material/ink_well.dart:494:14)
E/flutter (31215): #6 _InkResponseState.build.<anonymous closure> (package:flutter/src/material/ink_well.dart:549:30)
E/flutter (31215): #7 GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:102:24)
E/flutter (31215): #8 TapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:161:9)
E/flutter (31215): #9 TapGestureRecognizer.acceptGesture (package:flutter/src/gestures/tap.dart:123:7)
E/flutter (31215): #10 GestureArenaManager.sweep (package:flutter/src/gestures/arena.dart:156:27)
E/flutter (31215): #11 _WidgetsFlutterBinding&BindingBase&GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:147:20)
E/flutter (31215): #12 _WidgetsFlutterBinding&BindingBase&GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:121:22)
E/flutter (31215): #13 _WidgetsFlutterBinding&BindingBase&GestureBinding._handlePointerEvent (package:flutter/src/gestures/binding.dart:101:7)
E/flutter (31215): #14 _WidgetsFlutterBinding&BindingBase&GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:64:7)
E/flutter (31215): #15 _WidgetsFlutterBinding&BindingBase&GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:48:7)
E/flutter (31215): #16 _invoke1 (dart:ui/hooks.dart:134:13)
E/flutter (31215): #17 _dispatchPointerDataPacket (dart:ui/hooks.dart:91:5)
D/ViewRootImpl#526fccd[MainActivity](31215): ViewPostImeInputStage processPointer 0
D/ViewRootImpl#526fccd[MainActivity](31215): ViewPostImeInputStage processPointer 1
E/flutter (31215): [ERROR:topaz/lib/tonic/logging/dart_error.cc(16)] Unhandled exception:
E/flutter (31215): MissingPluginException(No implementation found for method readQRCode on channel qrcode_reader)
E/flutter (31215): #0 MethodChannel.invokeMethod (package:flutter/src/services/platform_channel.dart:278:7)
E/flutter (31215): <asynchronous suspension>
E/flutter (31215): #1 QRCodeReader.scan (package:qrcode_reader/QRCodeReader.dart:67:27)
E/flutter (31215): <asynchronous suspension>
E/flutter (31215): #2 _MyHomePageState.build.<anonymous closure>.<anonymous closure> (file:///C:/Users/x/AndroidStudioProjects/qr_cod
E/lib/main.dart:56:10)
E/flutter (31215): #3 State.setState (package:flutter/src/widgets/framework.dart:1117:30)
E/flutter (31215): #4 _MyHomePageState.build.<anonymous closure> (file:///C:/Users/x/AndroidStudioProjects/qr_cod
E/lib/main.dart:49:6)
E/flutter (31215): #5 _InkResponseState._handleTap (package:flutter/src/material/ink_well.dart:494:14)
E/flutter (31215): #6 _InkResponseState.build.<anonymous closure> (package:flutter/src/material/ink_well.dart:549:30)
E/flutter (31215): #7 GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:102:24)
E/flutter (31215): #8 TapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:161:9)
E/flutter (31215): #9 TapGestureRecognizer.acceptGesture (package:flutter/src/gestures/tap.dart:123:7)
E/flutter (31215): #10 GestureArenaManager.sweep (package:flutter/src/gestures/arena.dart:156:27)
E/flutter (31215): #11 _WidgetsFlutterBinding&BindingBase&GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:147:20)
E/flutter (31215): #12 _WidgetsFlutterBinding&BindingBase&GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:121:22)
E/flutter (31215): #13 _WidgetsFlutterBinding&BindingBase&GestureBinding._handlePointerEvent (package:flutter/src/gestures/binding.dart:101:7)
E/flutter (31215): #14 _WidgetsFlutterBinding&BindingBase&GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:64:7)
E/flutter (31215): #15 _WidgetsFlutterBinding&BindingBase&GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:48:7)
E/flutter (31215): #16 _invoke1 (dart:ui/hooks.dart:134:13)
E/flutter (31215): #17 _dispatchPointerDataPacket (dart:ui/hooks.dart:91:5)
D/ViewRootImpl#526fccd[MainActivity](31215): ViewPostImeInputStage processPointer 0
D/ViewRootImpl#526fccd[MainActivity](31215): ViewPostImeInputStage processPointer 1
D/ViewRootImpl#526fccd[MainActivity](31215): ViewPostImeInputStage processPointer 0
D/ViewRootImpl#526fccd[MainActivity](31215): ViewPostImeInputStage processPointer 1
D/ViewRootImpl#526fccd[MainActivity](31215): ViewPostImeInputStage processPointer 0
D/ViewRootImpl#526fccd[MainActivity](31215): ViewPostImeInputStage processPointer 1
E/flutter (31215): [ERROR:topaz/lib/tonic/logging/dart_error.cc(16)] Unhandled exception:
E/flutter (31215): MissingPluginException(No implementation found for method readQRCode on channel qrcode_reader)
E/flutter (31215): #0 MethodChannel.invokeMethod (package:flutter/src/services/platform_channel.dart:278:7)
E/flutter (31215): <asynchronous suspension>
E/flutter (31215): #1 QRCodeReader.scan (package:qrcode_reader/QRCodeReader.dart:67:27)
E/flutter (31215): <asynchronous suspension>
E/flutter (31215): #2 _MyHomePageState.build.<anonymous closure>.<anonymous closure> (file:///C:/Users/x/AndroidStudioProjects/qr_cod
E/lib/main.dart:56:10)
E/flutter (31215): #3 State.setState (package:flutter/src/widgets/framework.dart:1117:30)
E/flutter (31215): #4 _MyHomePageState.build.<anonymous closure> (file:///C:/Users/x/AndroidStudioProjects/qr_cod
E/lib/main.dart:49:6)
E/flutter (31215): #5 _InkResponseState._handleTap (package:flutter/src/material/ink_well.dart:494:14)
E/flutter (31215): #6 _InkResponseState.build.<anonymous closure> (package:flutter/src/material/ink_well.dart:549:30)
E/flutter (31215): #7 GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:102:24)
E/flutter (31215): #8 TapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:161:9)
E/flutter (31215): #9 TapGestureRecognizer.acceptGesture (package:flutter/src/gestures/tap.dart:123:7)
E/flutter (31215): #10 GestureArenaManager.sweep (package:flutter/src/gestures/arena.dart:156:27)
E/flutter (31215): #11 _WidgetsFlutterBinding&BindingBase&GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:147:20)
E/flutter (31215): #12 _WidgetsFlutterBinding&BindingBase&GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:121:22)
E/flutter (31215): #13 _WidgetsFlutterBinding&BindingBase&GestureBinding._handlePointerEvent (package:flutter/src/gestures/binding.dart:101:7)
E/flutter (31215): #14 _WidgetsFlutterBinding&BindingBase&GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:64:7)
E/flutter (31215): #15 _WidgetsFlutterBinding&BindingBase&GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:48:7)
E/flutter (31215): #16 _invoke1 (dart:ui/hooks.dart:134:13)
E/flutter (31215): #17 _dispatchPointerDataPacket (dart:ui/hooks.dart:91:5)
EDIT:
I restarted my computer to see if that was the issue, since I had only just installed Android Studio on this computer. Now whenever I run the project I get this error
C:\Users\x\Documents\Coding\Flutter\SDK\flutter\.pub-cache\hosted\pub.dartlang.org\qrcode_reader-0.3.3\android\src\main\java\com\matheusvillela\flutter\plugins\qrcodereader\QRCodeReaderPlugin.java:42: error: cannot find symbol public class QRCodeReaderPlugin implements MethodCallHandler, ActivityResultListener, PluginRegistry.RequestPermissionResultListener {
^ symbol: class RequestPermissionResultListener location: interface PluginRegistry C:\Users\x\Documents\Coding\Flutter\SDK\flutter\.pub-cache\hosted\pub.dartlang.org\qrcode_reader-0.3.3\android\src\main\java\com\matheusvillela\flutter\plugins\qrcodereader\QRCodeReaderPlugin.java:63: error: incompatible types: QRCodeReaderPlugin cannot be converted to RequestPermissionsResultListener
registrar.addRequestPermissionsResultListener(instance);
^ C:\Users\x\Documents\Coding\Flutter\SDK\flutter\.pub-cache\hosted\pub.dartlang.org\qrcode_reader-0.3.3\android\src\main\java\com\matheusvillela\flutter\plugins\qrcodereader\QRCodeReaderPlugin.java:155: error: method does not override or implement a method from a supertype
#Override
^ Note: C:\Users\x\Documents\Coding\Flutter\SDK\flutter\.pub-cache\hosted\pub.dartlang.org\qrcode_reader-0.3.3\android\src\main\java\com\matheusvillela\flutter\plugins\qrcodereader\QRCodeReaderPlugin.java uses unchecked or unsafe operations. Note: Recompile with
-Xlint:unchecked for details. Note: Some messages have been simplified; recompile with -Xdiags:verbose to get full output 3 errors
FAILURE: Build failed with an exception.
* What went wrong: Execution failed for task ':qrcode_reader:compileDebugJavaWithJavac'.
> Compilation failed; see the compiler error output for details.
* Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
* Get more help at https://help.gradle.org
BUILD FAILED in 2s Finished with error: Gradle build failed: 1
After adding the plugin statement in the pubspec.yaml file, you need to do a flutter packages get command.
Also, you can also try flutter upgrade first. Then check your flutter doctor output.
Sometimes, I also switch Flutter channel as there be be bugs. Change Flutter channel by issuing Flutter channel XXX where XXX is dev, master or beta.