type 'future' is not a subtype of type 'string' Navigation

I'm parsing a json array of json objects, one of the fields is a list of objects as well and I suspect my issue stems from that. Solutions. This issue has been automatically marked as stale because it has not had recent activity. type '_InternalLinkedHashMap' is not a subtype of type 'String' I/flutter ( 9432): When the exception was thrown, this was the stack: Unhandled Exception: type '_InternalLinkedHashMap' is not Solution 1 : Provide type argument to the map method. Flutter MethodChannel, Dart Generic and Type-Casting. If this is still an issue, please make sure it is up to date and if so, add a comment 2 Use Map allStores and List cartList. こうしたときは、 .cast () でint型へキャストすることで、エラーを回避できます。. CloudStack.Ninja is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. type '_InternalLinkedHashMap' is not a subtype of type 'Category'. Improve this answer. So let’s Start this tutorial without wasting your Time. Best answer It seems your amount is double.But sometimes it comes as int from the server. type '_InternalLinkedHashMap' is not a subtype of type 'String' I/flutter ( 9432): When the exception was thrown, this was the stack: Unhandled Exception: type '_InternalLinkedHashMap' is not Answer： As the above answers pointed, the time variable was int while the Text() required an String . flutter: type ‘Future ‘ is not a subtype of type ‘List Fantashit March 27, 2020 2 Comments on flutter: type ‘Future ‘ is not a subtype of type ‘List ‘ ERROR flutter: type ‘Future ‘ is not a subtype of type ‘List Fantashit March 27, 2020 2 Comments on flutter: type ‘Future ‘ is not a subtype of type ‘List ‘ ERROR But could not get through it. type '_InternalLinkedHashMap' is not a subtype of type 'Property' And second, hey we just made this nice little class for Property, I don’t see it’s usage anywhere. I am trying to post my data which consist an array of cartItems and other information. how do i fix this type ‘Future’ is not a subtype of type ‘String’ The relevant error-causing widget was SavedTab Dart , firebase , Flutter , google-cloud-firestore / By Clinton Sang type 'List' is not a subtype of type 'List' in type cast. Anytime the type 'String' is not a subtype of type 'int' message shows, there has been a type mismatch. unhandled exception type string is not a subtype of type 'map string dynamic in flutter. I am also using the json_serializable library. A beginner gotcha, or how type ‘_InternalLinkedHashMap’ is not a subtype of type ‘Map’ leads you here. I am also using the json_serializable library. I have the kind of error, when I try to get location: type 'Future' is not a subtype of type 'Future>' where Future is from dart:async Future is from dart:async Map is from dart:core String Let’s start this article. Question: How to solve Unhandled Exception: InternalLinkedHashMap’ is not a subtype of type ‘List ? The most important thing to keep in mind is that if anything in your call-chain returns a Future, everything above it must deal with futures, either by returning the future itself (if no processing must be done), or await 'ing and dealing with the returned value (but you'll still be returning a future). Unhandled Exception: type '_InternalLinkedHashMap' is not a subtype of type 'String' in type cast. Let’s start this article. I will request you to solve this. useful! Question: How to solve Unhandled Exception: InternalLinkedHashMap’ type 'Future' is not a subtype of type 'Future>' where Future is from dart:async Future is from dart:async Map is from dart:core String is from dart:core double is from dart:core The first string of the Yeah @easazade. Hi! Hi! Share. So it’s all About type ‘List’ is not a subtype of type ‘List’ in Flutter error. Hope this tutorial helped you a lot. Comment below Your thoughts and your queries. And Also Comment on your suggestion here. How to make a blur Background Image effect in Flutter using BackdropFilter. CloudStack.Ninja is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. I'm parsing a json array of json objects, one of the fields is a list of objects as well and I suspect my issue stems from that. Copied! So let’s Start this tutorial without wasting your Time. Here I am Come with all Possible Solution. type '_InternalLinkedHashMap' is not a subtype of type 'String' I/flutter ( 9432): When the exception was thrown, this was the stack: Unhandled Exception: type '_InternalLinkedHashMap' is not breaking exception '_InternalLinkedHashMap' is not a subtype of type 'Map Future' is not a su... Have a question about this project? type 'List dynamic' is not a subtype of type 'List Text 'problem Solved I am trying to post my data which consist an array of cartItems and other information. It looks like data is a List, then data.map(someFunc).toList() will take each element of data pass it to someFunc and form it back into a list of the return type of someFunc (which you will presumably want to be BaseResponse). Solution 1 : Provide type argument to … type 'List dynamic' is not a subtype of type 'List Text 'problem Solved // Map MapofTodos = jsonDecode(savedTodo); //Try to debug it first first and see what type it's If this is still an issue, please make sure it is up to date and if so, add a comment type '_InternalLinkedHashMap' is not a subtype of type 'String' I/flutter ( 9432): When the exception was thrown, this was the stack: Unhandled Exception: type '_InternalLinkedHashMap' is not Best answer It seems your amount is double.But sometimes it comes as int from the server. You can copy paste run full code below. I am just wondering whether it's possible to navigate to a new page in flutter, but for that page to appear below the previous one in the widget tree. Copied! Answer: You have to convert the runtimeType of data from _InternalLinkedHashMap to an actual List. It will be closed if no further activity occurs. Have a question about this project? Response response = await _dio.get ('user/info'); Map json = jsonDecode (jsonEncode (response.data)); additional info : platform i test on : android platform version : 8.0 dio version : 3.0.9 report rate : 5 % of the time only in release mode. One way is to. I'm decoding a response body and I'm getting the error: 'List' is not a subtype of type 'List'. 3 To prove it work, I have modified your json string and show with nested ListView, see working demo below. I am just wondering whether it's possible to navigate to a new page in flutter, but for that page to appear below the previous one in the widget tree. Table of Contents. breaking exception '_InternalLinkedHashMap' is not a subtype of type 'Map' is not a subtype of type 'List'. Table of Contents. type '_InternalLinkedHashMap' is not a subtype of type 'String' I/flutter ( 9432): When the exception was thrown, this was the stack: Unhandled Exception: type '_InternalLinkedHashMap' is not type '_InternalLinkedHashMap' is not a subtype of type 'FutureOr>' Hagga Nagga Published at PHP 2414 Hagga Nagga : I have a Problem with my json.decode. type 'List>' is not a subtype of type 'List' - InventoriesData.dart Skip to content All gists Back to GitHub Sign in Sign up Sign in Sign up {{ message }} Instantly share code, notes, and snippets. Answer： As the above answers pointed, the time variable was int while the Text() required an String . You can copy paste run full code below. It looks like data is a List, then data.map(someFunc).toList() will take each element of data pass it to someFunc and form it back into a list of the return type of someFunc (which you will presumably want to be BaseResponse). This issue has been automatically marked as stale because it has not had recent activity. I'm decoding a response body and I'm getting the error: 'List' is not a subtype of type 'List'. Complex nested structures. 2 Use Map allStores and List cartList. Type 'future' is not a subtype of type 'string Asynchronous programming: futures, async, await, You need to have a Future that returns type database for your initDB() method: Future initDB() async { var databasesPath = await They are: 1. Anytime the type 'String' is not a subtype of type 'int' message shows, there has been a type mismatch. こうしたときは、 .cast () でint型へキャストすることで、エラーを回避できます。. type 'List>' is not a subtype of type 'List' - InventoriesData.dart Skip to content All gists Back to GitHub Sign in Sign up Sign in Sign up {{ message }} Instantly share code, notes, and snippets. Response response = await _dio.get ('user/info'); Map json = jsonDecode (jsonEncode (response.data)); additional info : platform i test on : android platform version : 8.0 dio version : 3.0.9 report rate : 5 % of the time only in release mode. type 'Future' is not a subtype of type 'Future>' where Future is from dart:async Future is from dart:async Map is from dart:core String is from dart:core double is from dart:core The first string of the Ask questions type '_InternalLinkedHashMap' is not a subtype of type 'Map' in type cast I get following error, when i want to deserialize an object with a property of type List<> containing another serializeable object. CloudStack.Ninja is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. EXCEPTION CAUGHT BY GESTURE I/flutter (17186): The following assertion was thrown while handling a gesture: I/flutter (17186): type '(String) => Future' is not … type '_InternalLinkedHashMap' is not a subtype of type 'String' I/flutter ( 9432): When the exception was thrown, this was the stack: Unhandled Exception: type '_InternalLinkedHashMap' is not Copied! So, you need to convert these int values to double, too. Here is page.json. I have the kind of error, when I try to get location: type 'Future' is not a subtype of type 'Future>' where Future is from dart:async Future is from dart:async Map is from dart:core String Ask questions type '_InternalLinkedHashMap' is not a subtype of type 'Map' in type cast I get following error, when i want to deserialize an object with a property of type List<> containing another serializeable object. 'Future' is not a subtype of type 'bool' or 'Future' is not a subtype of type 'String' etc.. I got this exception when I needed to use SharedPreferences, even I had followed https://flutter.io/docs/cookbook/persistence/key-value this tutorial. Right. Try this: FoodNutrients.fromJson(Map … ). Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Answer questions RalphNoel. type '_InternalLinkedHashMap' is not a subtype of type 'FutureOr>' Hagga Nagga Published at PHP 2414 Hagga Nagga : I have a Problem with my json.decode. Here you're trying to iterate over a Map which is not possible because only possible Iterables objects are Set,List and Queue. 22. type 'List' is not a subtype of type 'List' in type cast. The api from laravel is generated as follows like … Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Here I am Come with all Possible Solution. type '_InternalLinkedHashMap' is not a subtype of type 'String' I/flutter ( 9432): When the exception was thrown, this was the stack: Unhandled Exception: type '_InternalLinkedHashMap' is not Solutions. But could not get through it. 22. how do i fix this type ‘Future’ is not a subtype of type ‘String’ The relevant error-causing widget was SavedTab Dart , firebase , Flutter , google-cloud-firestore / By Clinton Sang It is already included … 1 Your demo json string has typo "id": "jk" and "id": 35 use different type. Flutter MethodChannel, Dart Generic and Type-Casting. unhandled exception type string is not a subtype of type 'map string dynamic in flutter. 1. type 'List' is not a subtype of type 'List'. Answer questions RalphNoel. CloudStack.Ninja is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. type '_InternalLinkedHashMap' is not a subtype of type 'String' I/flutter ( 9432): When the exception was thrown, this was the stack: Unhandled Exception: type '_InternalLinkedHashMap' is not _TypeError (type '_InternalLinkedHashMap' is not a subtype of type 'Map') type '_InternalLinkedHashMap' is not a subtype of type 'Future?' Exception has occurred. _CastError (type '_InternalLinkedHashMap' is not a subtype of type 'double' in type cast) Yeah @easazade. Solution 2 : … type '_InternalLinkedHashMap' is not a subtype of type 'Category'. flutterchina/dio. Copied! DanT29. flutterchina/dio. So, you need to convert these int values to double, too. DanT29. The api from laravel is generated as follows like … I want to get some data from my website but when my website says {"Number":5} i only get this error (type '_InternalLinkedHashMap' is not a subtype of type 'FutureOr'). However if my website says string {"Number":5} i get the correct output and this error FormatException: Unexpected character (at character 1). useful! 1 Your demo json string has typo "id": "jk" and "id": 35 use different type. A beginner gotcha, or how type ‘_InternalLinkedHashMap’ is not a subtype of type ‘Map’ leads you here. Type 'future' is not a subtype of type 'string Asynchronous programming: futures, async, await, You need to have a Future that returns type database for your initDB() method: Future initDB() async { var databasesPath = await They are: 1. ). It will be closed if no further activity occurs. Unhandled Exception: type '_InternalLinkedHashMap' is not a subtype of type 'String' in type cast.