Flutter Change Button Above Text Dynamically Android iOS Example Tutorial

As we all know in flutter every View is controlled by widgets. To create a Button we would use Raised Button widget along with Text widget. We can easily update the Button Text using State in flutter. State is used to update widgets properties in real time and display changes on screen. So in this tutorial we would learn about Flutter Change Button Above Text Dynamically Android iOS Example Tutorial.

Contents in this project Flutter Change Button Above Text Dynamically Android iOS Example Tutorial :

1. Import material.dart package in your app’s main.dart file.

2. Create void main runApp() method and here we would call our main MyApp class.

3. Create our main class named as MyApp extends with State less widget. This is our main Root View class. In this class in Center widget we are calling CustomButton() widget class. Because we are using State in our current tutorial and State cannot use directly in main class.

4. Create a class named as CustomButton(). In this class we would make the createState() method and pass the CustomButtonState class along with it to enable mutable State management.

5. Create a class named as CustomButtonState extends State. This is our main Child class in which we are creating Both buttons and updating the button above title text using State.

6. Create a String variable named as buttonText with some default Text. We would use this variable as Button above text.

7. Create a function named as updateButtonText. In this function we would simply update the String variable value using setState() method of flutter dart.

8. Creating Widget Build Area -> Scaffold widget -> Center widget -> Column widget -> Creating 2 Raised Button widget. We are calling the first Raised button text using String variable.

9. Complete source code for main.dart file:

Screenshots:

Flutter Change Button Above Text Dynamically Android iOS Example Tutorial

2 Comments

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