How to Add or Change App icons in Flutter | Android & iOS | Flutter Launcher Icon Change 

Step 1 go to this website – appicon.co

Step 2 Upload the app icon and Generate

Step 3 go to your flutter project and find this path

C:\Users\dharm\AndroidStudioProjects\my_hospital_now\android\app\src\main

Step 4 Replace your app icon Generate the Download file and lock this image

Step 5 go to your flutter project and find this iso path

C:\Users\dharm\AndroidStudioProjects\my_hospital_now\ios\Runner

Step 5 app icon Generate the Download file Assets.xcassets Replace here and lock this image

Step 5: Run again your flutter project

Refrences Video Here:- Click here