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[Flutter] Do not use BuildContexts across async gapsの対処方法

Posted at

こんにちわ。いせきです。

今回は、warningの一つを対処する方法を共有します

では今回は、画面遷移の際に

await Navigator.push(
      context,
      MaterialPageRoute<dynamic>(
        builder: (context) => const WeatherScreen(),
      ),
    );

解決策

mountedを入れてあげると、Warningが消えて問題なくなる。

if (!mounted) {
      return;
    }
    await Navigator.push(
      context,
      MaterialPageRoute<dynamic>(
        builder: (context) => const WeatherScreen(),
      ),
    );
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