Flutter Get Count TextField Inside Typed Text Character Length

The TextField widget of flutter has a property named as onChanged() which calls every time when user types something in TextField widget. The onChanged() method returns us the typed character length in integer format. It will also count the empty space as single character. So in this tutorial we would Flutter Get Count TextField Inside Typed Text Character Length Android iOS Example Tutorial.

Contents in this project Flutter Get Count TextField Inside Typed Text Character Length 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. Creating our main Root Parent class named as MyApp extends State less widget. In this class we would call TextFieldClass() class as Child.

4. Creating a class named as TextFieldClass extends StatefulWidget. Inside this class we would make the createState() method and pass _TextFieldState class along with it. This would enable the State management in given class tree.

5. Creating our main Child Class named as _TextFieldState extends State. In this class we would make the Text Field widget.

6. Creating a TextEditingController() named as textController. This is used to get the typed value from Text Field widget.

7. Creating a integer variable named as charLength with default 0 Zero value. We would use this variable to hold the count of text Field inside typed text length.

8. Creating a function named as _onChanged() with String argument. We would call this function from onChanged method of TextField widget. So this function calls every time when user type something in Text Input widget. We would store the length of typed characters inside charLength variable.

9. Creating Widget Build area and then we would make 1 Text widget and 1 TextField widget.

10. Complete source code for main.dart file:

Screenshots:

Flutter Get Count TextField Inside Typed Text Character Length

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