flutter

[Solved] Error: Too few positional arguments: 1 required, 0 given

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You don’t need to specify the parameter label for BottomTabBtn. Instead of: BottomTabBtn(imagePath: “assets/images/tab_home.png”), Use: BottomTabBtn(“assets/images/tab_home.png”), If you really want to use parameter label, then change your constructor declaration to: BottomTabBtn({this.imagePath}); 1 solved Error: Too few positional arguments: 1 required, 0 given

[Solved] i am getting Error: Not found: ‘dart:html’

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As described on the front-page of the API documentation for Dart: https://api.dart.dev dart:html: DOM manipulation for web apps (available only to web apps). dart:io: I/O for non-web apps. So dart:html can only be used if your target platform is web (so Dart code compiled to JavaScript). In your case, you are trying to make an … Read more

[Solved] Error: ‘ModalBottomSheetRoute’ is imported from both ‘package:flutter/src/material/bottom_sheet.dart’ and ‘package:modal_bottom_sheet/src/bottom_sh [closed]

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Error: ‘ModalBottomSheetRoute’ is imported from both ‘package:flutter/src/material/bottom_sheet.dart’ and ‘package:modal_bottom_sheet/src/bottom_sh [closed] solved Error: ‘ModalBottomSheetRoute’ is imported from both ‘package:flutter/src/material/bottom_sheet.dart’ and ‘package:modal_bottom_sheet/src/bottom_sh [closed]

[Solved] how to disable linter in flutter?

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The Flutter linter is a tool that scans your code for potential problems and makes recommendations for fixes. Generally speaking, it’s a good practice to have the linter active because it can aid in error detection and better code maintenance. However, if you want to disable the linter for some reason, you can do so … Read more

[Solved] what should I do flutter. _TypeError (type ‘String’ is not a subtype of type ‘int’ of ‘index’) [closed]

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This type mismatch error which means that you provide “String value ” but needs of integer type value for more information you refere this link Type ‘String’ is not a subtype of type ‘int’ of ‘index’ solved what should I do flutter. _TypeError (type ‘String’ is not a subtype of type ‘int’ of ‘index’) [closed]

[Solved] How to get specific document data from firebase and return as a string

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It works for me Widget build(BuildContext context) { return new StreamBuilder( stream: Firestore.instance.collection(‘COLLECTION_NAME’).document(‘TEST’).snapshots(), builder: (context, snapshot) { if (!snapshot.hasData) { return Center(child: CircularProgressIndicator()); } var userDocument = snapshot.data; return new Text(userDocument[“property_name”]); } ); } 1 solved How to get specific document data from firebase and return as a string

[Solved] Can flutter_beacon package be used to make Social Distancing app in Flutter?

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In order for two phones to detect each other with BLE beaconing you need them to do two things: Advertise a beacon over BLE Scan for beacons over BLE But flutter_beacon only does item 2 above. For item 1, you need another package. Try beacon_broadcast: https://pub.dev/packages/beacon_broadcast You need to do both at once. If you … Read more

[Solved] FLutter : The method ‘[]’ was called on null when iterating list

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Just change your code to this! Future<String> getJSONData() async { var response = await http.get(url); setState(() { var dataConvertedToJSON = json.decode(response.body); data = dataConvertedToJSON[‘data’]; data = data[0][‘INCI’]; }); return “Successfull”; } @override Widget build(BuildContext context) { return new MaterialApp( home: new Scaffold( appBar: new AppBar( title: new Text(‘List Test’), ), body: new Center( child: data … Read more

[Solved] I am new in flutter i want pass data like user details name,address,moible number,email to another screen can you tell me how to do this [duplicate]

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There’s many options to do that, for example a data class, like that, class Data { String firstname; String lastname; String email; String address; Data({this.firstname, this.lastname, this.email, this.address}); } Now you declare and initialize the instance of the class, final data = Data(firstname: ‘Denzel’, lastname: ‘Washington’, email: ‘[email protected]’, address: ‘unknow’) After that you can pass … Read more

[Solved] A value of type ‘Null’ can’t be assigned to a parameter of type ‘Key’ in a const constructor. Try using a subtype, or removing the keyword ‘const’

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A value of type ‘Null’ can’t be assigned to a parameter of type ‘Key’ in a const constructor. Try using a subtype, or removing the keyword ‘const’ solved A value of type ‘Null’ can’t be assigned to a parameter of type ‘Key’ in a const constructor. Try using a subtype, or removing the keyword ‘const’

[Solved] The iPhone app closes immediately when I open the map [closed]

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You need to add the google map API key on ios/Runner/AppDelegate.swift file import UIKit import Flutter import GoogleMaps @UIApplicationMain @objc class AppDelegate: FlutterAppDelegate { override func application( _ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]? ) -> Bool { GMSServices.provideAPIKey(“GOOGLE_API_KEY”) GeneratedPluginRegistrant.register(with: self) return super.application(application, didFinishLaunchingWithOptions: launchOptions) } } 2 solved The iPhone app closes immediately when … Read more