pubspec.yaml

dependencies:
  flutter:
    sdk: flutter

dev_dependencies:
  flutter_native_splash: ^1.2.0
  flutter_test:
    sdk: flutter

Define splash screen settings

# Flutter Native Splash Settings
flutter_native_splash:
  color: "#B3BFD7"
  image: "assets/splash_logo.png"
  color_dark: "#3A3A3A"
  image_dark: "assets/splash_logo.png"
  android: true
  ios: true

flutter:
  uses-material-design: true

  assets:
    - assets/

flutter clean

flutter pub get

flutter pub run flutter_native_splash:create