how to make condition statement after dont(.) or before property in any method or class for example i have the following bool a = true ; FirebaseFirestore.instance.collection(‘users’) .limit(10) .where(‘visible’, isEqualTo: true) // here i need to use a? isEqualTo : whereIn {………….} or at least a?.where(‘visible’, isEqualTo: true) : .where(‘visible’, whereIn: [1]) what is the… Read More how to make condition statement after dot(.) or before property in any method or class

Struggling to add data to a specific index of a 2D array. I’m quite new to programming so I could have this all completely wrong but any help would be appreciated. Maybe my declaration of the array is wrong but I am seeing the first pair of [] as the first part where data can… Read More I'm trying to create an empty 2d/multidimensional array and then add data to it at specific indexes. Can someone tell me where I'm going wrong?

I am getting this annoying message whenever I try to run ios build on my iPhone 13. I am using M1 2020 enter image description here I try the all available solution posted on like "uncheck rosetta, Build Active Architecture only" is there something I missing? >Solution : Steps: Run flutter doctor -v Flutter clean… Read More Command ValidateEmbeddedBinary failed with a nonzero exit code error while running on iPhone 13

i want to assign value of defulttitle into the text but its showing some error.. final foldertitle = TextEditingController(text: folderbox.isEmpty ? defulttitle : folderbox.get(1)); class Addnotes extends StatefulWidget { const Addnotes( {super.key, this.defulttitle = "My passwords.."}); final String defulttitle; @override State<Addnotes> createState() => _AddnotesState(); } class _AddnotesState extends State<Addnotes> { BuildContext? myContext; final foldertitle =… Read More The instance member 'widget' can't be accessed in an initializer in flutter

I have an app that use firebase auth for authentication and use firestore, and some other dependency that shown below, now when I add firebase storage to the dependency the get error that is shown below, what should i do to fix it. when I add firebase_storage to dependency the below error happens. [!] CocoaPods… Read More CocoaPods could not find compatible versions for pod "Firebase/Firestore" || FLUTTER

I have a list of Foo List<Foo> fooList = [ Foo("Zero", 0.0, 0.0], Foo("One", 1.0, 0.0], Foo("Two", 0.0, 1.0], Foo("Three", 1.0, 1.0], ]; class Foo { String name; double bar; double baz; Foo(this.name, this.bar, this.baz); } Is there an easy way to extract and make a list of only baz? I’ve made it work with… Read More How to extract items from elements in a list to a new list in flutter

Here is my code: The error is at line : onTap: () => _showActionSheet(this.context), I don’t know whats the problem is with this line as I’m a beginner in the flutter. So please help me solving this error. >Solution : Firstly, you may use method instead of variable for this. List<Marker> _list()=>[…] You can do… Read More Can you help me solving this error in flutter , which says 'Error: Can't access 'this' in a field initializer.'?

I have a List (its not listview) that is being rendered inside a SingleChildScrollView. Each item of this list is like Card, that its divided this order: Padding > Container > Row > Container | Column > Text | Row > Expanded > Text Inside this last Text Widget, I need to expand it because… Read More Can't Make Expanded Text Work Inside a Row Flutter

I’m trying to set gradient color to container’s border line, here is the example i need. here is my code. Container( height: 50, width: 140, decoration: BoxDecoration( border: Border.all( color: Colors.black ), borderRadius: BorderRadius.circular(30), color: Colors.white ), child: const Center( child: Text( ‘Sign in’, style: TextStyle( fontSize: 20, fontWeight: FontWeight.bold, color: Colors.black, ), ), ),… Read More How to set gradient color to Container's border in flutter

I try to call a function named _callMe from AlertDialog . this is my example code : import ‘package:flutter/material.dart’; void main() { runApp(const MainApplication()); } class MainApplication extends StatelessWidget { const MainApplication({Key? key}) : super(key: key); @override Widget build(BuildContext context) { return const MaterialApp( debugShowCheckedModeBanner: false, title: "Training", home: HomePage(), ); } } class HomePage… Read More Flutter call function of another widget