設定方法

パッケージflutter_launcher_icons を利用する

pubspec.yaml iOS, Androidアプリの設定

dev_dependencies:
  flutter_launcher_icons: ^0.12.0

flutter_icons:
  android: "launcher_icon"
  ios: true
  image_path: "assets/icon/icon.png"
  min_sdk_android: 21 # android min sdk min:16, default 21