如何更改 flutter 应用程序默认图标的背景？

Question

I have an app and its default icon is a flutter default icon. Its background is white.

However, when i use the app the background of this icon changes to blue.

I believe it is a default color for flutter apps.

How can I change it to green, for example?

Answer 1

That's a part of your accent color so you need to add primaryColor in your MaterialApp() widget

for example

MaterialApp(
    debugShowCheckedModeBanner: false,
    theme: ThemeData(
      primaryColor: Colors.lightGreen,//here it goes try changing this to your preferred colour
      accentColor: Colors.green.shade800,
    ),
    home: StartScreen(),
    routes: {
      '/home': (context) => Home(),
    },
  )

Answer 2

If you want to change your background or fit your icon then head over to (android/app/src/main/res) and right click and go to new/Image Asset then android studio opens an image asset configuration box there you have to change the path and customize it whatever you want your icon to be.

or

If you want to change the flutter app icon or want to add your custom icon follow these steps:

1. Create your own icon using this link ( https://appicon.co/ ) and download the files
2. For android move that downloaded file to your flutter folder (android/app/src/main/res)
3. Rebuild your project