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@Satochaaan(Satoshi Kawano)in株式会社ベストティーチャー

Flutter Columnで"The method '>' was called on null."エラー

Posted at

エラー内容を見てもすぐに気づけずちょっとハマったので備忘録に

事象

Column使用箇所に下記エラーが発生
errorMessage.png

原因

Columnのネストが発生していた。

意図せず親Widgetと子WidgetでColumnが重複していたため起こっていたようです。
Column × RowはOKですが、同じもの同士はNGです。
(エラー内容が分かりにくい。。。)

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