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Sunday, February 25, 2024

Change Dynamically Theme in Flutter

With the growing numbers of mobile users, several businesses have launched mobile applications to tap into the pool of such a vast and diverse target audience. The features to be included in the applications must be of top-notch quality to ensure all the market and consumer expectations are met. While it may sound easy for some developers, the real challenge comes when one needs to include advanced features within the application code base. 

For example, coding an application with dynamic behavior is perhaps one of the most difficult tasks developers need to do. Similarly, designing an application suitable for multiple devices and operating systems is also quite cumbersome because the developers have to prepare multiple code bases according to the specifications.

Due to the complications of native development, a new concept came to the forefront, also called cross-platform development. This new process has revolutionized the entire IT industry, giving developers more opportunities to come up with the most innovative and groundbreaking solutions for various businesses. While many new platforms have been developed for cross-platform development, Flutter somehow stole the limelight and is now considered the topmost framework for developing mobile apps for Android and iOS.

Is Flutter good for mobile app development? 

Before we continue further, one of the major things that every developer or business looking for Flutter app development company then you must know is the advantage of this framework for mobile application development in 2022. 

As we mentioned earlier, there are a plethora of frameworks with which mobile apps can be designed and developed to be run across multiple platforms. But Flutter offers exceptional leverage to the professionals, which is why it’s now considered one of the best cross-platform mobile app development frameworks.

  1. Since Flutter is a cross-platform development framework, the total time required for developing a mobile application is less than the native process. This can increase the efficiency of the IT team and take the productivity of the business to another level.
  2. Flutter is easier to learn than its contenders because the programming language on which it is based is Dart, and Google develops both. All you need to do is plug the widgets together and implement customization codes to ensure the application has features relevant to the client and the market conditions. 
  3. There is no need to prepare multiple code bases for the same application using Flutter. Therefore, as a business, you have to hire developers having experience in Flutter only. There is no need to look for professionals having skills in Android and iOS development separately.
  4. Flutter offers more leverage for dynamic changes in mobile applications through hot reloading. With this, one can easily modify the code base and combine all the elements for launching the codes in the production environment.
  5. Several UI elements are already developed and integrated window application builder of Flutter. Therefore, there is no need to write the codes from scratch to develop the user interface.

What is the mobile app theme, and can it be changed?

Every mobile application needs to have a theme. It can be defined as the entire layout of the user interface, from color schemes to the placements of different UI elements. CSS and JavaScript are the two major languages with which the app theme is coded. Usually, in regular cross-platform development frameworks, the themes can be changed only after the execution is completed. 

This way, you won’t be able to know how the changes affect the current or existing theme until and unless the next compilation and execution cycle is over and results are displayed with success. This is where the concept of dynamically changing the application’s theme comes into play.

How to change the theme dynamically using Flutter?

Flutter helps dynamically change the theme of the mobile application easily, ensuring you can know the impacts of those changes during the compilation time. You won’t have to wait long to verify whether the changes are according to the business requirements or not. Besides, dynamic themes reduce the need for a testing team, owing to the implementation of agile methodologies.

In Flutter, you need to define a state that will hold the value of the change theme during the compilation time. Either you need to use the BuildContext package or write the InheritedWidget for custom change through a callback. This will allow you to access the state value while compilation. The top widget will implement the function known as setState() to change the brightness level. If this function has any child method, the latter will be responsible for invoking the parent function.

You can also create a package for dynamically changing the application’s theme. For this, you need a constructor and pass the state value to it directly or customize the value and then implement a callback function.


The dynamic app theme change is perhaps one of the major requirements of most IT projects where Flutter is used to develop mobile applications. If you do not include this snippet in the code base, it will become very tedious to change the theme manually through the state functions.

gaurav gupta
gaurav guptahttp://theprimereview.com
Gaurav Gupta is an SEO expert,writer and blogger with a strong passion for writing. He shares views and opinions on a range of topics such as Business, Health/Fitness, Lifestyle, Parenting and lot more. Read More : theprimereview

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