I want to give the ID to another StatelessWidget. But, there is two way for me to choose. The first way is to use the model’s ID. The data for this model comes from a Firebase Cloud Firestore document and I use the original ID as the document id. The second way is to use… Read More Which code should I use to provide the ID to another StatelessWidget?
I am trying to create a new text field, but I don’t know how to get the text in the position I want. When trying to program, it stays in this position: but I want it to look like this, in this position: This is the code: body: Container( padding: EdgeInsets.only(left: 25, bottom: 15), height:… Read More Child text – Flutter
I’m following this speed code tutorial(https://www.youtube.com/watch?v=KO_PYJKHglo) and I’m facing some problems during somewhere on 5:08 import ‘package:flutter/material.dart’; import ‘dart:math’; class WaveColorPainter extends CustomPainter { Paint? _paint; List<Color>? colors; @override void paint(Canvas canvas, Size size) { colors = List.from(Colors.accents); colors!.removeRange(6, 13); //null safety List<Color> gradColors = colors.map( (color) => color.withOpacity( Random().nextDouble().clamp(0.5, 0.9), ), ); final Gradient… Read More Can't figure out this Error "The method 'map' can't be unconditionally invoked because the receiver can be 'null'"
I need to add items to a Appointment item. Appointment is a class as follows: Appointment Appointment({ String? startTimeZone, String? endTimeZone, String? recurrenceRule, bool isAllDay = false, String? notes, String? location, List<Object>? resourceIds, Object? recurrenceId, Object? id, required DateTime startTime, required DateTime endTime, String subject = ”, Color color = Colors.lightBlue, List<DateTime>? recurrenceExceptionDates, }) I… Read More Inserting List of strings as list of objects
How Can I swipe for back in Flutter? not tap back button. Without any button…… Just swipe from left to right. And go to the back page >Solution : you can wrap your screen widget with gesture detector and on detecting swipe left you can pop the screen like this GestureDetector( onPanUpdate: (details) { if… Read More Swipe back in flutter. without any button
I am trying to make a quiz app and the app is running perfectly but there is this passive error lib/main.dart:4:8: Error: Not found: ‘dart:html’ import ‘dart:html’; Here is my code import ‘package:flutter/material.dart’; import ‘dart:html’; void main() { runApp(QuizApp()); } List questionBank = […]; class QuizApp extends StatefulWidget { @override State<QuizApp> createState() => _MyAppState(); }… Read More Why am I getting dart:html not found?
I was just commenting my application as i found out that you can use diffrent commenting. I’am curious if there are some commenting rules for this or has it something to do with the auto commenting of flutter it self? My choice go’s to the /// one since the color is different so it is… Read More What is the difference between // and /// in flutter
Here is my code class FakturPage extends StatefulWidget { const FakturPage({Key? key}) : super(key: key); static String id = ‘fakturpage’; @override State<FakturPage> createState() => _FakturPageState(); } class _FakturPageState extends State<FakturPage> { @override Widget build(BuildContext context) { return Scaffold( body: Column( children: [ DropdownTextfield(), ], ), ); } } and this is the DropdownTextfield widget code,… Read More This code returns an error that says 'Unexpected Null Value'
Ive tried to use double.parse, double.tryparse as well as trying to convert it to int but it keeps giving the error ‘type ‘int’ is not a subtype of type ‘String”, ive searched a few sites but all the solutions show to use parse. final locData = Map<String, dynamic>.from(local); var dubLat = locData[‘lat’]; var lat =… Read More String to double from a map in Dart
I want to achieve something like this: Thanks for any help you can provide >Solution : check out this blog it has step by step process explained in details https://medium.flutterdevs.com/creating-a-countdown-timer-using-animation-in-flutter-2d56d4f3f5f1