By WalkingTree   April  08, 2020

It’s all about widgets when it comes to Flutter. And a widget tree is a result of nested widgets. If your UI is simple, even when you come back to that code after a few days or weeks, it is easy for you to re-read the code and the application is efficient. But when your application or user interface is complex, it’ll need a large number of widgets and eventually, your code will become less readable and maintainable and less efficient. 

As the number of widgets increase, the widget tree expands rapidly and reduces the manageability and readability of the code. Refactoring is really important to improve the overall performance of your Flutter application. Well to do this, you can separate various widgets from its own widget class, creating a shallow if widgets. The overall goal is to keep the widget tree shallow in each application. By doing this, you can take advantage of the reconstruction of Flutter subtree, which will help in improving performance.  

Let’s look at some of the ways to refactor your Flutter application:

  • Refactoring with a method – This technique consists of returning just a widget to the call of a method by its signature.
  • Refactoring with a local variable – This consists of initializing a widget with a final variable
  • Refactoring with a widget class – This allows you to isolate a subtree of widgets by extending the StatelessWidget and StatefullWidget class. 

Read on to know more about how refactoring can improve the readability, maintainability, and performance of your Flutter application.

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