百度试题 结果1 题目在Flutter中,如何创建一个按钮? A. FlatButton B. RaisedButton C. ElevatedButton D. Button 相关知识点: 试题来源: 解析 C 反馈 收藏
AI代码解释 classRollingButtonextendsStatefulWidget{// StatefulWidget 需要实现这个方法,返回一个 State@override StatecreateState(){return_RollingState();}}// 可能看起来有点恶心,这里的泛型参数居然是 RollingButtonclass_RollingStateextendsState<RollingButton>{@override Widgetbuild(BuildContext context){returnRais...
import'package:flutter/material.dart';voidmain()=>runApp(AppBarSample());classAppBarSampleextendsStatelessWidget{@override Widgetbuild(BuildContext context){returnnewMaterialApp(home:newScaffold(appBar:newAppBar(title:constText('Basic AppBar'),centerTitle:true,actions:<Widget>[newIconButton(icon:Icon(...
Key key,//点击按钮的回调出发事件@required VoidCallback onPressed,//水波纹高亮变化回调ValueChanged<bool>onHighlightChanged,//按钮的样式(文字颜色、按钮的最小大小,内边距以及shape)[ Used with [ButtonTheme] and [ButtonThemeData] to define a button's base//colors, and the defaults for the button'...
RaisedButton( onPressed: () { //注意这里的context是BuildContext Scaffold.of(context).showBottomSheet( (BuildContext context) { //这里可以是一个自定义的View Text组件亦可,Container亦可 return new Container( //底部弹出文本框 child: Text('hello world1'), width: 150, height: 50, ); }, //颜...
create --template module native_add_flutter 6.2.1 iOS集成Flutter // CocoaPods集成flutter_application_path = '../native_add_flutter'load File.join(flutter_application_path, '.ios', 'Flutter', 'podhelper.rb’) // 初始化Flutter引擎 , 为引擎起名为leolet flutterEngine:FlutterEngine = FlutterEngi...
{ @override MyHomePageState createState() => MyHomePageState(); } class MyHomePageState extends State<MyHomePage>{ @override Widget build(BuildContext context) { return Scaffold( appBar: AppBar( title: Text("我是Title"), ), body: Center( child:Column( children:<Widget>[ RaisedButton( ...
floatingActionButton: FloatingActionButton( onPressed: () { key.currentState.updateState(); }, child: Text('切换'), ), // This trailing comma makes auto-formatting nicer for build methods. ); } 这里我们通过定义了一个 GlobalKey<UpdateWidgetState> 并传递给UpdateWidgetPage。然后我们便可以通过这...
Like Button is a flutter library that allows you to create a button with animation effects similar to Twitter's heart when you like something. License: MIT License Platform: android, ios, windows, linux, macos, web Published: 2022-09-29T07:01:22.988135Z Total: 4 ios_willpop_transition...
primaryColor, size: starSize, ); } ///如果你对水波纹有迷之热爱,你可以用InkResponse/InkWell/IconButton等包装即可 return new GestureDetector( onTap: onRatingChanged == null ? null : () => onRatingChanged(index + 1.0), child: icon, ); } @override Widget build(BuildContext context) { /...