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How To Build A Responsive Flutter Layout

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For the configuration of a mobile app, modifications are habitual. As the mobile’s keyboard appears either you rotate your mobile on the horizontal or vertical side. And the smartphones (foldable one), aspects of multi-window for Android, as well as Catalyst (the project permits valuable users to simply run their iOS applications on macOS) especially for iOS, have revealed countless screen sizes variations.

Being an open-source cross-platform SDK, the Flutter framework supports widely screen-sized devices, so the devices could be quite small like a smartwatch, or even could be large enough such as a large TV. As the Flutter framework works on a single code base, so with Flutter it is always a big challenge to adjust your mobile application to such a number of screen sizes as well as pixel densities.

If you already have an app for your business and you are willing to polish it properly as per new trends, your mobile application is assumed to appropriately “react” to modify the configuration. A maximum number of Flutter application developers of a reliable flutter development company usually struggle with responsiveness in Flutter layout. In this write-up, we are going to share our experience on how to make a responsive Flutter layout.

Though, to design a responsive Flutter layout, there are not so many rules. In this blog, we are going to show you a few of the effective approaches that your hired development team can adopt especially while designing a layout.

But before heading to building responsive layouts, we would love to cover the section on responsive design.

Responsive Design

This is a result-oriented technique or design method that permits mobile apps, websites, and even systems to reshape the screen size of the user. This responsive design will optimize the browsing experience of a user by simply making a responsively designed web app for the particular device.

This concept lies in utilizing a single code line that adapts to different layout alterations corresponding to devices such as phones, tablets, and last but not least computers.

What are the Goals of Responsive Design?

  1. Wider audience. 
  2. Lead potential users to buy.
  3. Brand awareness.
  4. Improved Search Engine Optimization.
  5. Upgrade offline as well as online browsing experience. 

Responsive design is undoubtedly one of the finest as well as easiest ways to reach potential users across various devices, which also ensures a smooth and wonderful user experience.

In the stage of on demand app development, developers always use the rule of “let the mobile version go first”. As it is quite easy to alter or adjust the app design built for devices (like smartphones, and TV) to a larger screen, so we can say this approach is advantageous and convenient. Or can say a development team can transform a smaller-sized thing into a complex one. However, if you are looking for the reverse process, then it is surely gonna be more complicated.

Now let us tell you how Android & iOS natively handle responsive layouts for more than one size of the screen.

iOS Approach

  1. First, Auto Layout

For developing adaptive interfaces, this auto layout can be easily utilized. Where you can simply define the rules which are well-known by name constraints that handle the mobile application’s content. These constraints automatically readjust your layouts so there is surely no requirement for any manual update of frames or say updates of positions.

  1. Second, Size Classes

These classes allow us to differentiate the size of devices and thus assist to create adaptable layouts that appear great on every size as well as the orientation of iPad as well as iPhone so we can simply update the User Interface.

  1. Third, UI Elements

UISplitViewController

UIViewController

UIStackView, etc

are a few of the User Interface elements that assist create a responsive User Interface on iOS.

Also Read- Top 5 Flutter Development Companies in 2023

Android Approach

  • First, Constraint Layout

This is surely one of the comprehensive tools that allow us to build a complete User Interface design along with the features of drag & drop, through a single code line manage the widgets, magnify its performance over other well-known layouts, as well as affix animations to the User Interface elements with not much effort. Though, this layout doesn’t resolve the concerns with devices (smartphones, or TV) with little as well as a big screens.

  • Second, Alternative Layouts

In Android Studio you can simply utilize alternative layouts, to resolve the earlier-mentioned concern. If you define divergent files of layout for a number of screen sizes, they’ll be axiomatically switched as per the devices’ screen size.

  • Third, Fragments

You can simply extricate the User Interface logic into well-defined components, rather than defining the effective logic for larger screen sizes individually in the multi-pane layout designing process.

  • Fourth, Vector Graphics

To add a number of Android screens, these vector graphics can be effortlessly created, that too with the assistance of Vector Asset Studio in Android Studio.

Responsiveness in Flutter Layout

Every single developer and designer stay crazy for the magic and for that, they learn different-different technologies. However, the execution process is not effortless in real life, and though everyone wants it to be easy, that is another thing. If you have determined to utilize the Flutter framework, your hired flutter developers and designers will never find themselves going for another framework.

To attain responsiveness Flutter framework offers so many classes as well as widgets to implement the designer’s ideas easily. It’s completely a developer’s choice on how exactly he or she is willing to implement their ideas in a particular application. A few of them are:

First, MediaQuery

Utilizing MediaQuery is surely worthwhile which surely can help you to recoup the size (in terms of width/height) and also retrieve the orientation (in terms of portrait/landscape) of the device’s screen.

Second, LayoutBuilder

With the assistance of LayoutBuilder, you can easily get the object named BoxConstraints, which can be utilized for deciding the widgets’ maxHeight as well as maxWidth.

Third, OrientationBuilder

Utilizing the class named OrientationBuilder would be the finest if you are willing to determine the widget’s current orientation.

Fourth, Expanded & Flexible

Widgets named Expanded & Flexible are chiefly handy inside a Row as well as a Column. Herr, this Expanded widget is utilized to dilate a child of a row, Flex, or Column so that obtainable space could be filled by the child, whereas Flexible doesn’t certainly need to cover the wholly available space.

Fifth, FractionallySizedBox

This widget which is known by the name FractionallySizedBox assists in sizing (to a fragment of the total available space) its child. It is mainly handy inside Expanded as well as Flexible widgets.

Sixth, Aspect Ratio

If you are willing to seize the child to a particular aspect ratio, you can utilize this widget. This Aspect Ratio widget initially tries the greatest width allowed by the layout constraints & after that, it will choose the height by simply applying the particular aspect ratio to the given width.

The Final Take

A consistent, as well as user-friendly design, should be well responsive too, that’s really no matter on what particular device it is viewed. Industries whose websites do not cater to mobile users’ requirements are becoming extinct. The most pleasing pro of responsiveness of design is that the company’s websites will load fast as well as without any kind of distortion which implies a great online as well as offline browsing experience.

For organizations, responsive apps provide great versatility that too at very lower costs of both development and maintenance, simplifying the particular process of application monitoring, and also bringing quite higher search rankings.

We completely hope this write-up will help you to collect good information not merely on how to build a responsive layout in Flutter as well as in achieving the responsive UI layout design in Flutter faster as well as easier, with not so many code lines.

 

Kossi Adzo is the editor and author of Startup.info. He is software engineer. Innovation, Businesses and companies are his passion. He filled several patents in IT & Communication technologies. He manages the technical operations at Startup.info.

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