The error looks like this: E/flutter ( 3378): [ERROR:flutter/runtime/dart_isolate.cc(144)] Could not prepare isolate. E/flutter ( 3378): [ERROR:flutter/runtime/runtime_controller.cc(422)] Could not create root isolate. E/flutter ( 3378): [ERROR:flutter/shell/common/shell.cc(609)] Could not launch engine with configuration. I am getting this error when I use…
======== Exception caught by widgets library ======================================================= The following assertion was thrown building MyHomePage(dirty, dependencies: [MediaQuery], state: _MyHomePageState#a3bdf(tickers: tracking 1 ticker)): There should be exactly one item with [DropdownButton]'s value: Marker{markerId: MarkerId(First Marker), alpha: 1.0, anchor: Offset(0.5, 1.0), consumeTapEvents: false,…
I'm able to resolve in retaining the app's font size even thought the device is using bigger font size. My problem come along when the user also changes the display size or set the texts to bold that makes my…
I want to set a gradient as a background color for my ElevatedButton. So I did this : Container( height: 100, width: 100, decoration: const BoxDecoration( gradient: LinearGradient( begin: Alignment.topRight, end: Alignment.bottomLeft, colors: [ Color(0xFFFE1871), Color(0xFFFD0E38), Color(0xFFFF0205), ], )), child:…
I have a list like this: List<ProductModel> productList = [ ProductModel(name: "Oranges", date: "2023-05-01"), ProductModel(name: "Apples", date: "2023-05-01"), ProductModel(name: "Kiwis", date: "2023-03-01"), ]; I would like to group the items by date using groupBy and display it in Widget build…
i think i need help here. My code says error "Null Check Operator Used on A null Value". When i running/build the app for first time everything is oke. The apk running goodly. But when me click home button or…
I have just updated to Flutter 3.10 and Dart 3.0 and followed the Dart 3.0 migration steps shown here and running "dart analyze" shows no errors. However when I ask VSCode to run my tests all I get is: Could…
I want to protect an app against any kind of recordings possible, may it be screenshots or screen-recordings. I know I can use the library flutter_windowmanager to set a flag preventing screenshots and making the screen-recordings show a black screen,…
Here is the error! I have never used these below error packages in my pubspec.yaml ../../.pub-cache/hosted/pub.dev/chewie_audio- 1.3.0/lib/src/material_controls.dart:242:50: Error: The getter 'accentColor' isn't defined for the class 'ThemeData'. ../../.pub-cache/hosted/pub.dev/flutter_math_fork- 0.5.0/lib/src/widgets/selection/gesture_detector_builder.dart:198:29: Error: The argument type 'void Function(DragEndDetails)' can't be assigned to the…
In my app i validate form for age phone email and many more field and i am trying to validate all this field. but unable to do so I have regex expression for phone textformfield. I cant use inputFormatters for…