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[Swift]R.swiftで生成するViewControllerのinitにパラメータを渡す

Last updated at Posted at 2020-05-30

背景

例によって、個人開発したScoreBoxという麻雀成績管理アプリからのネタ。

iOS13ではStoryboardでもDIができる件についてを拝見し、せっかくなのでR.swiftを利用して実装しました。
リンク先でもメリットを記載されていますが、プロパティのlet化、この恩恵は非常に大きいです。

やったこと

  • R.swiftの導入

  • Storyboard上でViewControllerにStoryboard IDを登録
    IDを指定.png

  • 呼び出し元でViewControllerのインスタンス生成/表示

let gameDetailVC = R.storyboard.main().instantiateViewController(identifier: R.storyboard.main.gameDetail.identifier) { coder in
   // GameDetailViewControllerはプロパティに`let game`を持ち、initの引数に必須としている
    GameDetailViewController(coder: coder, game: game)
}
navigationController?.pushViewController(gameDetailVC, animated: true)
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