Category "dart"

How to get substring between two strings in DART?

How can i achieve similar solution to: How to get a substring between two strings in PHP? but in DART For example I have a String:String data = "the quick brow

How to change the application language with BlockBuilder?

The application needs to implement language switching at runtime. Wrote a bloc with event and state and called BlocBuilder in main.dart. But I don't know how to

Is it possible to share your location through flutter app

I built an app in flutter, dart to access the location of the user. I now want to share the current physical location of the user via Whatsapp, email etc but no

How is Dart "sound null-safety" different from Kotlin null safety?

This Dart official video states that Dart's so-called "sound null safety" is better than Kotlin's null safety design, because it can optimise the code based on

Create a Flutter module for desktop apps

Currently, when running the command flutter create -t module --org com.example app we are able to generate a Flutter module which we can add to a host parent ap

VS Code and Flutter/Dart, Widget Autocomplete not working

I'm working with some tutorials to learn Flutter and the one that I'm taking now uses VSCode. I actually prefer it to Android Studio because it doesn't overhea

Vertical divider inside ListTile header

I am attempting to add vertical divider between the leading portion and the title of a ListTile. I understand that Flutter now has a VerticalDivider widget,

blank page when I started web flutter debugging

looks like this : I have a problem when flutter web debugging. My launching project doesn't stop and displays a blank page.blank page like this : i try too we

In Flutter, why does the DraggableScrollableSheet show blank space when there are less children?

I want the DraggableScrollableSheet to stop moving up when there are less items in the ListView. Instead, blank space is created underneath to fill the entire s

Unable to read a file in local directory with Flutter

I'm creating an app that writes a file into local directory and needs to access it later. One problem: when I try to read the file, the process never ends (and

Avoid `print` calls in production code. (Documentation)

I started seeing this warning in all my print statements. print('Foo'); // Warning: Avoid `print` calls in production code.

In Dart get next occurring date from an rrule

Is there a Dart library or, lacking one, a correct way to handle finding the next date that would be returned from a correctly formatted rrule? For example giv

How to change the textStyle of Stepper in Flutter?

I have a Stepper and I am trying to change the color and textStyle inside the Step (yellow circle) widget (i.e: 1,2,3) from white to black. This is my code: The

is there any way to store data in sqflite and when data connection is available upload the data to online mongodb server

Hey friends I want to know a way in which I can store the app data in offline mode and when the data connection is available then the app sync the data to my on

Null safety migration error: package has unmigrated dependencies. But all my dependencies declare support for null-safety

Im trying to migrate dart null safety but I get the following error when I run dart migrate Bad state: Error: package has unmigrated dependencies. Before migra

Put information in a specific sub-categories, flutter, firebase

I would like to upload informations in my UID doc, but the information is stored in another subcategory. Future postDetailsToFirestore() async { FirebaseFi

Exception thrown in stream callback is not being passed to onError callback

I have some bluetooth connection code in my Flutter app. I have provided an onError callback to the stream.listen() method. The device.connect() call is throwin

Is there a way to auto-format flutter with vscode?

I was wondering if there is a library like Eslint for Flutter/Dart that will automatically insert semicolons and trailing commas when I save the file. FLutter V

What assert do in dart?

I just want to know what's the use of assert in a Dart. I was tried to figure it out by myself but I'm not able to do that. It would be great if someone explain

current route name is null on Flutter

Always getting null when I try to find current page. How do I get current page? print('current page ${ModalRoute.of(context).settings.name}'); my end goal is,