Native Shopify Mobile App with 20 new features
Kickstart your hyperlocal marketplace in Corona pandemic with a starter guide
Android App Development
iOS App Development
Cross Platform App Development
Hire on-demand project developers and turn your idea into working reality.
Big thanks to Webkul and his team for helping get Opencart 18.104.22.168 release ready!
Owner and Founder. Opencart
Flutter provides a wide range of widgets for developing applications. In this blog, we will be exploring an important flutter widget i.e. ValueListenableBuilder. Imagine you have some variable that is needed throughout the app, and you want the app to update whenever the variable value changes in that use case we can utilize the ValueListenableBuilder widget.
Let see this with a basic code implementation.
First, we will declare a variable of type ValueNotifier which is a special type of class.
Here, the ValueNotifier hold an int type value with a default value as 0. We will utilize it where we will use the ValueListenableBuilder widget.
Now in the next step let’s see the widget code.
The valueListenable and builder are the required parameters for ValueListenableBuilder.
In valueListenable we pass our created ValueNotifier variable whose changes will be notified and in builder we will return a widget that will be reflected every time when the value of ValueNotifier will be changed.
Below is a screenshot of a code for better understanding.
In this way, we can create and implement the ValueListenableBuilder widget.
Your email address will not be published. Required fields are marked*
Save my name email and website in this browser for the next time I comment.
Then while creating a ValueListenableBuilder in Page2 you can use the instance of the ValueNotifier you got from Page1.
Let me know if you need a code-based example for that.
Enquiry or Requirement
If you have more details or questions, you can reply to the received confirmation email.