我转向了dropdown_button2，我很高兴DropdownButtonFormField2的实现方式，因为到目前为止，它与flutterDro...
在Flutter中创建自定义DropdownSearch,您可以按照以下步骤进行操作: 首先,确保您已经安装了Flutter开发环境并创建了一个新的Flutter项目。 在项目的pubspec.yaml文件中添加依赖项,以使用dropdown_search库。您可以在pub.dev网站上找到该库并复制其最新版本号。
final String emptyText; /// Give action text if you want handle the empty search. final String emptyActionText; /// this functon triggers on click of emptyAction button final Future<void> Function()? onEmptyActionPressed; final String? initialValue; DropdownFormField( {Key? key, required ...
我很困惑,因为在点击DropdownButton之前,当我点击像TextFormFields这样的小工具时,它似乎工作正常。错误消息:'package:flutter/src/material/dropdown.dart': Failed assertion: line 581 pos 12: 'menuHeight ==这是我的DropdownButton: import 'package:flutter/material.dart' 浏览9提问于2021-09-28得票数 5 ...
form_field_validator 简单的 flutter 表单字段验证器,提供常见的验证选项。 2021-03-16 363 matrix_gesture_detector 将平移/旋转/缩放手势映射到 Matrix4 对象的手势检测器。 2019-03-08 64 formz Dart 中的统一表单表示,旨在以通用方式简化表单表示和验证。 2021-10-14 402 flutter_background_service 用于在后...
Also usable under Form widget for required validation. Dropdown Flutter using constructor DropdownFlutter(). Dropdown Flutter with search field using named constructor DropdownFlutter.search(). Dropdown Flutter with search request field using named constructor DropdownFlutter.searchRequest(). Multi ...
By this package you can search an item from the dropdown item list. And also can get the input from TextField that not present in the dropdown items. Getting Started Platforms This widget has been successfully tested on iOS, Android and Chrome. Screenshots OutlookSearching with country name ...
DropdownButtonFormField (dropdown.dart) TextFormField (text_form_field.dart) WillPopScope (will_pop_scope.dart) Hero (heroes.dart) ListWheelScrollView (list_wheel_scroll_view.dart) NestedScrollView (nested_scroll_view.dart) PageView (page_view.dart) ...
你可以使用TextFormField和ElevatedButton来构建这些界面。 登录界面示例代码: class LoginPage extends StatelessWidget { @override Widget build(BuildContext context) { return Scaffold( appBar: AppBar( title: Text('Login Page'), ), body: Padding( padding: EdgeInsets.all(16.0), child: Column( ...
找到解决办法了。只需在InputDecoration中的dropdownsearchdecoration参数中放入这一行：