Overview
Flutterでアプリiconを変えるには、StoryBoardとxmlの設定をいじる必要がありますが、面倒臭いのでパッケージを使えば簡単にできるのでご紹介します。
画像のサイズですが、私が使ったもの縦横のサイズが500pxのものでした。
summary
プロジェクトを作成したら、📁assetsフォルダを作成して、iconフォルダ作らなくても良いですが、公式は作ってたので作成しました。
パスは、assets/icon/になりますね。
pubspec.yamlにパッケージと設定を追加します。
name: lancher_icons_app
description: A new Flutter project.
# The following line prevents the package from being accidentally published to
# pub.dev using `flutter pub publish`. This is preferred for private packages.
publish_to: 'none' # Remove this line if you wish to publish to pub.dev
# The following defines the version and build number for your application.
# A version number is three numbers separated by dots, like 1.2.43
# followed by an optional build number separated by a +.
# Both the version and the builder number may be overridden in flutter
# build by specifying --build-name and --build-number, respectively.
# In Android, build-name is used as versionName while build-number used as versionCode.
# Read more about Android versioning at https://developer.android.com/studio/publish/versioning
# In iOS, build-name is used as CFBundleShortVersionString while build-number is used as CFBundleVersion.
# Read more about iOS versioning at
# https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
# In Windows, build-name is used as the major, minor, and patch parts
# of the product and file versions while build-number is used as the build suffix.
version: 1.0.0+1
environment:
sdk: '>=3.1.0 <4.0.0'
# Dependencies specify other packages that your package needs in order to work.
# To automatically upgrade your package dependencies to the latest versions
# consider running `flutter pub upgrade --major-versions`. Alternatively,
# dependencies can be manually updated by changing the version numbers below to
# the latest version available on pub.dev. To see which dependencies have newer
# versions available, run `flutter pub outdated`.
dependencies:
flutter:
sdk: flutter
flutter_launcher_icons: "^0.13.1" # icon用のパッケージを追加
# launcher_iconを使用するための設定
flutter_launcher_icons:
android: "launcher_icon"
ios: true
image_path: "assets/icon/icon.png"
min_sdk_android: 21 # android min sdk min:16, default 21
# The following adds the Cupertino Icons font to your application.
# Use with the CupertinoIcons class for iOS style icons.
cupertino_icons: ^1.0.2
dev_dependencies:
flutter_test:
sdk: flutter
# The "flutter_lints" package below contains a set of recommended lints to
# encourage good coding practices. The lint set provided by the package is
# activated in the `analysis_options.yaml` file located at the root of your
# package. See that file for information about deactivating specific lint
# rules and activating additional ones.
flutter_lints: ^2.0.0
# For information on the generic Dart part of this file, see the
# following page: https://dart.dev/tools/pub/pubspec
# The following section is specific to Flutter packages.
flutter:
# The following line ensures that the Material Icons font is
# included with your application, so that you can use the icons in
# the material Icons class.
uses-material-design: true
# To add assets to your application, add an assets section, like this:
# assets:
# - images/a_dot_burr.jpeg
# - images/a_dot_ham.jpeg
# An image asset can refer to one or more resolution-specific "variants", see
# https://flutter.dev/assets-and-images/#resolution-aware
# For details regarding adding assets from package dependencies, see
# https://flutter.dev/assets-and-images/#from-packages
# To add custom fonts to your application, add a fonts section here,
# in this "flutter" section. Each entry in this list should have a
# "family" key with the font family name, and a "fonts" key with a
# list giving the asset and other descriptors for the font. For
# example:
# fonts:
# - family: Schyler
# fonts:
# - asset: fonts/Schyler-Regular.ttf
# - asset: fonts/Schyler-Italic.ttf
# style: italic
# - family: Trajan Pro
# fonts:
# - asset: fonts/TrajanPro.ttf
# - asset: fonts/TrajanPro_Bold.ttf
# weight: 700
#
# For details regarding fonts from package dependencies,
# see https://flutter.dev/custom-fonts/#from-packages
iconを生成するコマンドを実行する。
flutter pub run flutter_launcher_icons:main
もしホーム画面のアプリiconが変わらない場合は、アプリを一度削除してビルドすると良いとのことです。私もこの辺がどんな仕組みになってるかは理解できてません🙇
ホーム画面はこんな感じです
Androidだと、丸の中に四角い画像が入っているので白の余白が気になってしまいます。何か設定が必要みたいですね。xmlの設定をいじるときに、丸の画像を使ったときは余白ができずにいい感じで収まりました。
thoughts
アプリのiconはないと見た目がカッコよくないですし多分アプリの審査でも通らない😅
みなさんもアプリにiconを使うときは、このパッケージ使ってみてください。
こちらが完成品です。内容は設定だけですが参考になればと思いGithubに公開しております。
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