How To Customize Flutter Textfield Initial Value?

Flutter textfield initial value customization. In this article, we will be discussing an implementing Flutter textfield initial value in Flutter textfield. We will be going through step by step explanation of what it’s role is in Flutter textfield and how to implement and customize Flutter textfield initial value in Flutter textfield. So let’s get right into it.

What is Flutter Textfield Initial Value?

Flutter textfield initial value in the value that we want to give our Flutter textfield by default.

For instance, you have a description and you want to add few words to the same description but don’t want to write the description all over again just to add those few words using the Flutter textfield. So in this way, Flutter textfield initial value benefit the user, it can be used to put the current description in the Flutter textfield by default so the user only focus on adding the new words to the same description and not writing the whole description again in an empty Flutter textfield.

Don’t worry, I will be using proper Flutter example code to demonstrate how Flutter textfield initial value works. So let’s get right into implementing Flutter textfield initial value using Flutter code example.

Implementing Flutter Textfield Initial Value

Let’s now implement Flutter textfield initial value in our Flutter textfield. For that we have to use the controller constructor of the Flutter textfield. Let’s see the steps of how to do it:

Step 1

TextEditingController controllerValue = TextEditingController();

In step 1, implement the text editing controller like this.

Step 2

void initState() {
    controllerValue.text = 'This is the initial value';
    super.initState();
  }

In step 2, I am using the init state because I want to have the Flutter textfield initial value when I navigate to this page, because the init state runs first when this page will be loaded or navigated from some other page to this page. In this, I have set the controller text to the text mentioned above. Now our controller has a text string value.

Step 3

 TextField(
         controller: controllerValue
          )

In step 3, using the controller constructor of the Flutter textfield, we have given our defined controller to it. Now let’s hot restart our Flutter app and see if we can see by default the value we set above in the Flutter textfield or not.

As you can see in the above image that Flutter textfield initial value is implemented successfully. Now you can add more value and give it to the controller and the value will be added to the previous defined value, you can add or delete this text.

Beautiful Flutter Textfield Source Code

flutter text field initial value

import 'package:flutter/material.dart';
void main() {
  runApp(const MyApp());
}
class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: Homepage(),
    );
  }
}
class Homepage extends StatefulWidget {
  @override
  State<Homepage> createState() => _HomepageState();
}
class _HomepageState extends State<Homepage> {
  TextEditingController controllerValue = TextEditingController();
  @override
  void initState() {
    controllerValue.text = 'This is the initial value';
    super.initState();
  }
  @override
  Widget build(BuildContext context) {
    return SafeArea(
        child: Scaffold(
      body: Center(
          child: Padding(
              padding: EdgeInsets.symmetric(horizontal: 40),
              child: Column(
                mainAxisAlignment: MainAxisAlignment.center,
                children: [
                  TextField(
                    controller: controllerValue,
                    style: TextStyle(color: Colors.white),
                    cursorColor: Colors.purple,
                    decoration: InputDecoration(
                        hintText: 'This is hint text',
                        hintStyle: TextStyle(color: Colors.white70),
                        prefixIcon: Icon(
                          Icons.person,
                          color: Colors.white70,
                        ),
                        suffixIcon: Icon(
                          Icons.edit,
                          color: Colors.white70,
                        ),
                        border: InputBorder.none,
                        filled: true,
                        fillColor: Colors.purple.withOpacity(.6),
                        contentPadding: EdgeInsets.all(26),
                        enabledBorder: OutlineInputBorder(
                            borderSide: BorderSide(color: Colors.transparent),
                            borderRadius: BorderRadius.circular(30).copyWith(
                                topRight: Radius.circular(0),
                                bottomLeft: Radius.circular(0))),
                        focusedBorder: OutlineInputBorder(
                            borderSide: BorderSide(color: Colors.transparent),
                            borderRadius: BorderRadius.circular(30).copyWith(
                                topRight: Radius.circular(0),
                                bottomLeft: Radius.circular(0)))),
                  )
                ],
              ))),
    ));
  }
}

Conclusion

In conclusion, now you have a complete practical understanding of how to set, customize Flutter textfield initial value and how you can give your Flutter textfield a default value. I would love to have your feedback on this post. I would also encourage you to visit my other articles on Flutter app development, Flutter widgets, Flutter animations, Flutter templates and many more, links to some of them are listed below. Thanks for reading this post.