How To Change Flutter Dropdown Icon

Flutter dropdown icon customization. In this post, I will be changing the default Flutter dropdown icon using an essay Flutter code example and through step by step explanation so it will be easy for you to change the default Flutter dropdown icon with any icon of your choosing. Let’s get right into changing the Flutter dropdown icon.

Outline

What is Flutter Dropdown Icon?
Default Flutter Dropdown Icon
Change Flutter Dropdown Icon
Beautiful Flutter Dropdown Design Source Code
Conclusion

What is Flutter Dropdown Icon?

Flutter dropdown icon is the icon that you see in the right side of Flutter dropdown. By clicking it we see a dropdown list of items through which we can select an option to show in our Flutter dropdown. Let’ see how to change Flutter dropdown icon.

Default Flutter Dropdown Icon

Let’s see the default Flutter dropdown icon. For that we have to implement a simple Flutter dropdown. I have used a simple Flutter dropdown and also have used two Flutter dropdown menu items so we have some items. See the below code:

DropdownButton(
            isExpanded: true,
            hint: Text('Select a category',
                style: TextStyle(fontSize: 15)),
            value: categoryValue,
            items: [
              DropdownMenuItem(
                  value: 'Sports',
                  child: Text('Sports',
                      style: TextStyle(fontSize: 15, color: Colors.black45))),
              DropdownMenuItem(
                  value: 'Tech',
                  child: Text('Tech',
                      style: TextStyle(fontSize: 15, color: Colors.black45))),
            ],
            onChanged: (val) {
              setState(() {
                categoryValue = val.toString();
              });
            }),

You can see in the above image the default Flutter dropdown icon on the right side of the Flutter dropdown. This is the icon that we now will change so we can use our own custom icon in its place.

Change Flutter Dropdown Icon

Let’s see how to change the default Flutter dropdown icon. For that we have to use the icon constructor of the Flutter dropdown button. Then passing it Flutter icon widget, so in that way we can change the Flutter dropdown icon. See the below code:

icon: Icon(Icons.arrow_downward_outlined)

In the above image, you can see that the default Flutter dropdown icon is now changed. We have changed that icon with a downward arrow Flutter icon.

So now you have a complete understanding of how to change Flutter dropdown icon with your own custom Flutter icon. The icon constructor takes a widget which means you can also pass a Flutter container widget or other Flutter widgets and decorate it depending on your project requirements. If you still have any queries regarding Flutter dropdown icon customization then comment it. I would love to answer all your queries.

As a treat, I have designed a beautiful Flutter dropdown design for you in which Flutter dropdown icon customization is also implemented. Hope you will like it. The source code is given in the next section.

Beautiful Flutter Dropdown Design Source Code

flutter dropdown icon

import 'package:flutter/material.dart';
void main() {
  runApp(MyApp());
}
class MyApp extends StatelessWidget {
  @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> {
  String? categoryValue;
  @override
  Widget build(BuildContext context) {
    return SafeArea(
        child: Scaffold(
      body: Center(
          child: Padding(
        padding: EdgeInsets.symmetric(horizontal: 40),
        child: Container(
          width: double.infinity,
          height: 55,
          padding: EdgeInsets.symmetric(horizontal: 10),
          decoration: BoxDecoration(
              color: Colors.green.shade100,
              borderRadius: BorderRadius.only(
                  topLeft: Radius.circular(30),
                  bottomLeft: Radius.circular(30),
                  bottomRight: Radius.circular(30))),
          child: DropdownButtonHideUnderline(
            child: DropdownButton(
                icon: Icon(
                  Icons.arrow_downward_outlined,
                  color: Colors.white,
                ),
                isExpanded: true,
                hint: Text('Select a category',
                    style: TextStyle(fontSize: 15, color: Colors.white)),
                value: categoryValue,
                items: [
                  DropdownMenuItem(
                      value: 'Sports',
                      child: Text('Sports',
                          style:
                              TextStyle(fontSize: 15, color: Colors.black45))),
                  DropdownMenuItem(
                      value: 'Tech',
                      child: Text('Tech',
                          style:
                              TextStyle(fontSize: 15, color: Colors.black45))),
                  DropdownMenuItem(
                      value: 'Business',
                      child: Text('Business',
                          style:
                              TextStyle(fontSize: 15, color: Colors.black45))),
                ],
                onChanged: (val) {
                  setState(() {
                    categoryValue = val.toString();
                  });
                }),
          ),
        ),
      )),
    ));
  }
}

Conclusion

In conclusion, now you know in depth of how to change Flutter dropdown icon and replace it with your own Flutter icon. I would love to hear your thoughts on this post and would also want to see you in my other amazing posts in which I have discussed in detail topics like Flutter app development, Flutter widgets, Flutter animations, Flutter beautiful templates designs and many more, links to few of those posts are listed below. Thanks for reading this post.

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