Help us understand the problem. What is going on with this article?

CustomCellに値を代入したときにFatal error: Unexpectedly found nil while implicitly unwrapping an Optional value: custom cell: file xxxというエラーが出た

nibで作成したCustom cellに値を入れようとした時に次のエラーが出ました。

Fatal error: Unexpectedly found nil while implicitly unwrapping an Optional value: custom cell: file xxx

結論

  • tableViewのregisterメソッドが間違っていた。
before
tableView.register(UserSearchCell.self, forCellReuseIdentifier: UserSearchCell.className)
after
tableView.register(UINib(nibName: UserSearchCell.className, bundle: nil), forCellReuseIdentifier: UserSearchCell.className)

cellをコードで実装している時はbeforeが正しくて、cellをnibで作成した時はafterでテーブルセルの作成に使用するクラスを登録しないといけないかと思われます。

参考

register(_:forCellReuseIdentifier:) - UITableView | Apple Developer Documentation

snt-nbzw
iOS Developer / Swift / Objective-C
https://hyaku-juu-ichi.hatenablog.com/
caraquri
ネイティブモバイルアプリの開発を強みとする港区の開発会社。
https://caraquri.com/
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