Is there a way to list all methods which scaffold creates regarding Ruby on Rails? Example: rails generate scaffold user name:string admin:references Now, within the controller, the following declaration is possible: @user = User.new @user.admin=current_admin Now, I want to check where the admin() method comes from – or where it is placed respectively. I tried… Read More List all methods related to a model which scaffold creates
i have this code: @override Widget build(BuildContext context) { return MaterialApp( home: DefaultTabController( length: 3, child: Scaffold( drawer: SideBar(), appBar: AppBar( bottom: TabBar( onTap: (index) { ScaffoldMessenger.of(context). showSnackBar(SnackBar(content: Text(index.toString()))); }, shows me this error: ======== Exception caught by gesture =============================================================== The following assertion was thrown while handling a gesture: No ScaffoldMessenger widget found. TabBarDemo widgets… Read More No ScaffoldMessenger widget found. TabBarDemo widgets require a ScaffoldMessenger widget ancestor
I’m new to flutter. I’m trying to build register and login app. but I faced an issue. My problem is that I have this container class Background extends StatelessWidget { final Widget child; const Background({ Key? key, required this.child, }) : super(key: key); @override Widget build(BuildContext context) { Size size = MediaQuery.of(context).size; return Container( child:… Read More How to add custom container to form
Flutter shows error Non-nullable instance field ‘_areas’ must be initialized. Maybe this is because of not defining null in lists areas what when defining null Like List? _areas; it shows an error on the index Error: Field ‘_areas’ should be initialized because its type ‘List’ doesn’t allow null. Error Line: List _areas; Here is my… Read More Field '_areas' should be initialized because its type 'List<Area>' doesn't allow null
I’m trying out BottomSheetScaffold and I just found a strange behavior (maybe a bug) when using it. I put it inside a Box { } that has a cyan background color: composable(route = "my_route") { Box( modifier = Modifier .fillMaxSize() .background(color = Color.Cyan), ) { val coroutineScope = rememberCoroutineScope() val bottomSheetScaffoldState = rememberBottomSheetScaffoldState() BottomSheetScaffold( scaffoldState… Read More BottomSheetScaffold is overriding the background color of its parent
import ‘package:flutter/material.dart’; import ‘package:webview_flutter/webview_flutter.dart’; void main() => runApp(MyApp()); class MyApp extends StatelessWidget { @override Widget build(BuildContext context) { return MaterialApp( home: Scaffold( body: WebViewClass() ) ); } } class WebViewClass extends StatefulWidget { WebViewState createState() => WebViewState(); } class WebViewState extends State<WebViewClass>{ num position = 1 ; final key = UniqueKey(); doneLoading(String A) { setState(()… Read More How to Create a Progress Indicator for WebView in Flutter
Widget build(BuildContext context) { super.build(context); return Scaffold( … … … builder: (BuildContext context) { //BuildContext context final innerScrollController = PrimaryScrollController.of(context); return TabMedium( sc: innerScrollController, tc: _tabController, ); return BannerAdAdmob(); } For now, it shows only TabMedium() view. How can I put top & bottom these views? What do I get? What do I want? Thanks…… Read More Return two design elements in builder
I’m new on flutter and I don’t have an idea why ElevatedButton stretched and become a background. I just want a simple button. How can I solve this problem? Here’s the image below: Here’s my code @override Widget build(BuildContext context) { return Scaffold( body: Center( child: ElevatedButton( onPressed: () { Navigator.pop(context); }, child: SafeArea( child:… Read More Why is ElevatedButton getting stretched and becoming a background?
This is the response of the statusCode and body if the user enters the wrong email and password. I/flutter (20074): 200 I/flutter (20074): {"code":1,"message":"invalid username or password","data":null} and if user enter a correct email and password this is the response I/flutter (20074): 200 I/flutter (20074): {"code":0,"message":"success","data":{"Id":121106,"Name":"User 1","Email":"user@gmail.com","Token":"2db0ce86-2dc0-4381-97de-ce6e0c341d90"}}. I want to validate my login if the… Read More Why I'm getting this error: The argument type 'String' can't be assigned to the parameter type 'int'?
I have a function that is called when a ListTile is clicked. I need to move it to a separate method. The function is in onTap. I want to put it in a separate method outside of build. How can i do this? class _HomeScreenState extends State<HomeScreen> { @override Widget build(BuildContext context) { return Scaffold(… Read More How to move a function into a separate method?