Regie  Lucas

Regie Lucas


Flutter Widgets Explained (Stateless vs Stateful) | Flutter For Beginners

In Flutter, everything is a widget. But what are widgets? Widgets are like legos, and they’re the building blocks of Flutter apps. We can combine them together to build amazing apps with complex user interfaces. Based on the values that are passed into widgets, they change their appearance.

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Flutter Widgets Explained (Stateless vs Stateful) | Flutter For Beginners

Google's Flutter 1.20 stable announced with new features - Navoki

Flutter Google cross-platform UI framework has released a new version 1.20 stable.

Flutter is Google’s UI framework to make apps for Android, iOS, Web, Windows, Mac, Linux, and Fuchsia OS. Since the last 2 years, the flutter Framework has already achieved popularity among mobile developers to develop Android and iOS apps. In the last few releases, Flutter also added the support of making web applications and desktop applications.

Last month they introduced the support of the Linux desktop app that can be distributed through Canonical Snap Store(Snapcraft), this enables the developers to publish there Linux desktop app for their users and publish on Snap Store.  If you want to learn how to Publish Flutter Desktop app in Snap Store that here is the tutorial.

Flutter 1.20 Framework is built on Google’s made Dart programming language that is a cross-platform language providing native performance, new UI widgets, and other more features for the developer usage.

Here are the few key points of this release:

Performance improvements for Flutter and Dart

In this release, they have got multiple performance improvements in the Dart language itself. A new improvement is to reduce the app size in the release versions of the app. Another performance improvement is to reduce junk in the display of app animation by using the warm-up phase.


If your app is junk information during the first run then the Skia Shading Language shader provides for pre-compilation as part of your app’s build. This can speed it up by more than 2x.

Added a better support of mouse cursors for web and desktop flutter app,. Now many widgets will show cursor on top of them or you can specify the type of supported cursor you want.

Autofill for mobile text fields

Autofill was already supported in native applications now its been added to the Flutter SDK. Now prefilled information stored by your OS can be used for autofill in the application. This feature will be available soon on the flutter web.


A new widget for interaction

InteractiveViewer is a new widget design for common interactions in your app like pan, zoom drag and drop for resizing the widget. Informations on this you can check more on this API documentation where you can try this widget on the DartPad. In this release, drag-drop has more features added like you can know precisely where the drop happened and get the position.

Updated Material Slider, RangeSlider, TimePicker, and DatePicker

In this new release, there are many pre-existing widgets that were updated to match the latest material guidelines, these updates include better interaction with Slider and RangeSliderDatePicker with support for date range and time picker with the new style.


New pubspec.yaml format

Other than these widget updates there is some update within the project also like in pubspec.yaml file format. If you are a flutter plugin publisher then your old pubspec.yaml  is no longer supported to publish a plugin as the older format does not specify for which platform plugin you are making. All existing plugin will continue to work with flutter apps but you should make a plugin update as soon as possible.

Preview of embedded Dart DevTools in Visual Studio Code

Visual Studio code flutter extension got an update in this release. You get a preview of new features where you can analyze that Dev tools in your coding workspace. Enable this feature in your vs code by _dart.previewEmbeddedDevTools_setting. Dart DevTools menu you can choose your favorite page embed on your code workspace.

Network tracking

The updated the Dev tools comes with the network page that enables network profiling. You can track the timings and other information like status and content type of your** network calls** within your app. You can also monitor gRPC traffic.

Generate type-safe platform channels for platform interop

Pigeon is a command-line tool that will generate types of safe platform channels without adding additional dependencies. With this instead of manually matching method strings on platform channel and serializing arguments, you can invoke native class and pass nonprimitive data objects by directly calling the Dartmethod.

There is still a long list of updates in the new version of Flutter 1.2 that we cannot cover in this blog. You can get more details you can visit the official site to know more. Also, you can subscribe to the Navoki newsletter to get updates on these features and upcoming new updates and lessons. In upcoming new versions, we might see more new features and improvements.

You can get more free Flutter tutorials you can follow these courses:

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Terry  Tremblay

Terry Tremblay


What is Flutter and why you should learn it?

Flutter is an open-source UI toolkit for mobile developers, so they can use it to build native-looking** Android and iOS** applications from the same code base for both platforms. Flutter is also working to make Flutter apps for Web, PWA (progressive Web-App) and Desktop platform (Windows,macOS,Linux).


Flutter was officially released in December 2018. Since then, it has gone a much stronger flutter community.

There has been much increase in flutter developers, flutter packages, youtube tutorials, blogs, flutter examples apps, official and private events, and more. Flutter is now on top software repos based and trending on GitHub.

Flutter meaning?

What is Flutter? this question comes to many new developer’s mind.


Flutter means flying wings quickly, and lightly but obviously, this doesn’t apply in our SDK.

So Flutter was one of the companies that were acquired by **Google **for around $40 million. That company was based on providing gesture detection and recognition from a standard webcam. But later when the Flutter was going to release in alpha version for developer it’s name was Sky, but since Google already owned Flutter name, so they rename it to Flutter.

Where Flutter is used?

Flutter is used in many startup companies nowadays, and even some MNCs are also adopting Flutter as a mobile development framework. Many top famous companies are using their apps in Flutter. Some of them here are





Reflectly app

Reflectly app

Abbey Road Studios

Abbey Road Studios

and many more other apps. Mobile development companies also adopted Flutter as a service for their clients. Even I was one of them who developed flutter apps as a freelancer and later as an IT company for mobile apps.

Flutter as a service

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Vada  Dare

Vada Dare


When To Use A Stateless Or Stateful Widget (For Beginners) - Flutter

You have probably already heard a lot about Stateful Widgets vs. Stateless Widgets.

Well, this video isn’t about defining them, but understanding WHEN you should use which.

If you watch this entire video, at the end, you will always know when to use a Stateful or a Stateless widget.

Very basically explained, Stateless Widgets use up less resources in your app, while Stateful Widgets will always consume more resources.

So, you should always use a Stateless Widget, except when you want your content to be dynamic. In that case, you should use a Stateful Widget. Now if you want it to be static, then you use a Stateless widget.

In the video I go more in depth on the explanation and I very lightly explain each of them. I also talk about State management (what it is and how it works), as well as how, once you become more advanced, you’ll be able to apply dynamic content to Stateless Widgets as well.

00:00 - Intro
00:21 - Stateless & Stateful Concepts
01:30 - Creating Incrementable Variables
02:10 - Applying The Variables
02:40 - Seeing If It Works (Stateless)
03:01 - Trying Again With Stateful
03:45 - Using The setState() Method
04:01 - Observing Dynamic Changes
04:14 - Further Explaining setState
04:30 - When To Use Stateful vs Stateless
05:00 - What Is State Management
05:30 - Talking About More Advanced State Uses
05:55 - The Consumer Widget Concept
06:20 - Advice For Beginners
06:45 - Like & Subscribe!
06:53 - Flutter Mentor Out

#flutter #stateful #stateless


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#flutter #stateful #stateless #beginners

Elliott  Owen

Elliott Owen


Exploring Flutter Widgets || Flutter Stateful Widget & Text Field #11

In this video I have discussed about stateful widget and also discussed how to work with text field in flutter.

#statefulwidget #ripplescode #flutter #flutter stateful widget #text field #exploring flutter widgets

Condo Mark

Condo Mark


Flutter: Stateful Widget vs. Stateless Widget

Flutter is all about widgets. If you want to develop an application you have to first decide which widgets you are going to use. Each widget has its state.

What is State?

The state is information that can read simultaneously when the widget is built and might change during runtime, in short, we can say that State define the current property of Widget.

Classes that inherit Stateful Widget are immutable, But State is mutable.

(Immutable class means that once an object is created, we cannot change its content. A mutable class is one that can change its internal state after it is created.)

#mobile-app-development #flutter-widget #flutter-ui #flutter #dart