flutter-building-forms作者: flutter

Validated Flutter forms with field-level error handling and submission workflows. Requires StatefulWidget hosting with a persistent GlobalKey<FormState> to manage form state and validation across rebuilds Use TextFormField widgets with validator() callbacks that return error strings on failure or null on success Call _formKey.currentState!.validate() on submit to trigger all validators and automatically display error messages below fields Includes complete code example demonstrating username...

npx skills add https://github.com/flutter/skills --skill flutter-building-forms

NotebookLM 网页导入器

一键将网页和 YouTube 视频导入 NotebookLM。超过 200,000 用户信赖。

安装 Chrome 扩展