What is Flutter?

Introduction to Flutter

Flutter is making a lot of buzz in the mobile app development space as many startups have adopted it for creating native apps in both iOS and Android with record-breaking development time. Even the established players in the market like Alibaba have turned towards Flutter for creating their second-hand trading platform.

What is Flutter? Flutter is making a lot of buzz in the mobile app development space as many startups have adopted it for creating native apps in both iOS and Android with record-breaking development time. Even the established players in the market like Alibaba have turned towards Flutter for creating their second-hand trading platform.

Flutter is a software development kit (SDK) created by Google for cross-platform app development.

Yes, you heard it right, it’s not a language rather it’s an SDK similar to an Android SDK (which is for only Android development). The official programming language for Flutter is DART. Though a lot of us might not be familiar with the DART language, I can assure you it’s very easy to learn. In my opinion, it is similar to both Java and JavaScript

How Does Flutter Work?

Flutter’s approach widely varies from other cross-development platforms like Ionic, Xamarin, and React-Native. It comes with a 2-D widget rendering engine that works cohesively with Dart Framework and shows the UI in the canvas provided by the Platform.

So here how flutter works:

• Flutter is all about Widgets. Your entire app will be just a collection of widgets interacting with each other. Widgets are the only UI controls you will have in Flutter. For e.g. there are widgets for creating an Input Text Box or a Button.
• These widgets are rendered on a 2D widget rendering engine known as Skia Canvas.
• And then the Platform (iOS or Android) shows these Canvases and sends events back as required.

This gives a very rough idea on how does flutter works behind the screens. There are so many other aspects like Animation, Gestures which are supported out of the box by Flutter Foundation. But for now, this is good enough for us to start with the basics of Flutter. So now that we know how it works, we should know why we should go with flutter for app development. There are many cross-platform players in the market like “React-Native”, “Ionic”, etc. Each of them provides unique features which are good for developers as well as for end-users of the app.

Features of Flutter

• Rapid Development with the availability of huge out-of-the-box widgets even for Animation, Gesture detection, and many more.
•  Native apps for both Android & IOS.
• Hot Reload – Every time the Save button is clicked, within a second the changes get updated without losing the current application state. There is a very powerful feature for rapid development.
• Performance-wise it is better than other cross-platform players and very close to Native performances
• Customizable Kit for Widget Customization.
• It can run the same UI Design for multiple platforms.

Advantages & Disadvantages

Below are the advantages and disadvantages :

Advantages

1. It provides seamlessly the same UI across all platforms it supports. It is because of how it does not rely on platform-specific components. For e.g. let’s see the below example on how react native relies on platform-specific components for rendering. And for this rendering, it needs a mapping layer at the platform level which is way more complicated than it should be.

But in the case of Flutter, the only thing the UI needs a Canvas to draw onto. It not only saves the time and effort of the developer but also maintains a close native performance by approaching rendering through the Canvas.

2. The development time in the case of Flutter is reduced by record time. There are multiple factors that help developers to ship the application to the market in record-breaking time.

• The Hot-Reload feature allows the developer to see their changes without losing the current state of the application.
• Huge Catalog of Ready-to-use widgets.
• Along with the Widgets, it also provides.s a Customizable kit that saves time like no other framework.

3. Having its own Rendering Engine is the biggest advantage of all. All the things mentioned above would not have been possible so seamlessly if it did not have its own rendering engine. Flutter uses “Skia” to render itself on the platform-provided canvas.

4. Ready to use plugins for many activities besides the UI.

Example: In a modern-day application, connecting to GPS and getting user location is a must for many industry use-cases. Flutter provides ready to use a plugin called “geolocator” which provides features like:

• Getting the current location of the device.
• Check if the location service is enabled on the device.
• Calculate the distance between two geo-coordinates.

Disadvantages

Well to be honest, as an app developer I don’t see many disadvantages while choosing Flutter for mobile application development. But yes, there are few small keynotes we should always check before jumping into any framework.

1. So, if you are a JavaScript Developer, and you want to move towards Mobile Application development I would rather suggest React-Native over Flutter as React platforms uses JavaScript for the UI and the Logic Part whereas Flutter uses DART as their programming language which is more close to Java/C++ style of programming.

2. Most of us are from the background of Web Application development where the key was to separate the UI and business logic as much as possible. But in Flutter the UI and the logic is intermixed.

Though down the line when we have a strong grasp of the framework, we can easily overcome this by creating a high-level module to separate the UI and Business logic.

Now that we have a fair amount of understanding on What, How and Why of Flutter, the next big question is:

Is Flutter really Good from the Career Prospective?

We would answer this question with 100 Yeses!!!or even more. But I will point out a couple of keynotes that will really boost your motivation.

• Flutter has been attracting small, mid and even large enterprises business because of his uncompromised quality and a quickly growing support base. More the business adopts Flutter, more chance to land into your dream Job
•  Have you heard of Fuchsia OS By Google? If not google it out. To brief it out, it is considered to be Google’s next operating system across all of its devices. And guess what, 90% of the app will be developed in Flutter itself. So, let’s gear up before it’s too late.

Conclusion

We have gone through the fundamentals of the Flutter SDK, its rendering approach, its developer-friendly features and how many opportunities it can give for boosting your career to a new level. This framework comes with very high potential and it’s very easy to start with and actually can create some real-life applications really quick. With Google backing up the Flutter community, it is deemed to be a solution of the present and the future.

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