dependencies: dropdown_flutter: 1.0.1 Import the package and use it in your Flutter App. import 'package:dropdown_flutter/custom_dropdown.dart'; Example usage 1. Dropdown Flutter import 'package:dropdown_flutter/custom_dropdown.dart'; import 'package:flutter/material.dart'; import 'dart:devel...
import 'package:flutter/material.dart'; void main() => runApp(MaterialApp( debugShowCheckedModeBanner: false, home: HomePage(), )); class HomePage extends StatelessWidget { @override Widget build(BuildContext context) { return Scaffold( body: CustomScrollView( slivers: <Widget>[ SliverAppBar( ...
gzx_dropdown_menu是一个Flutter自定义功能强大的轻量级下拉筛选菜单Package,它支持iOS和Android。 功能介绍 A custom is strong dropdown menu for Flutter. Easy to use and powerful for customization, it's up to you what you want to display in the dropdown menu! Cu...
每次调用setState时,都会调用小部件的build方法,并在需要的地方重新构建可视化树。因此,在DropdownButton...
It is common to haveDropdownMenuwith filter enabled, and it is very likely to crash when that happens. For example,example appofDropdownMenuis impacted Workaround Workaround is possible by using providing your ownsearchCallback. Risk low ...
在本例中,点击AlertDialog外部将关闭AlertDialog和DropDownButton。当你点击“打开对话框”按钮时,它会...
如果没有显示定义构造函数,那么编译器就会先创建默认构造函数,之后再向其中加入初始化代码。
Flutter 的 DropdownButtonFormField 解释什么是 Flutter 的 DropdownButtonFormField Flutter 的 DropdownButtonFormField 是一个表单字段(form field),它提供了一个下拉列表供用户选择。这个组件结合了 DropdownButton 的功能性和 FormField 的表单集成能力,使得它非常适合在表单中使用,用于收集用户的输入。 介绍Drop...
你用错了方法。不要自己从头开始做所有的事情,首先看看flutter小部件。你总会找到有用的东西。您只需要...
在本例中,点击AlertDialog外部将关闭AlertDialog和DropDownButton。当你点击“打开对话框”按钮时,它会...