下面使用 flutter 实现一个好看的计时器。先看下效果图: main.dart 文件,代码如下: import'package:flutter/material.dart';import'dart:async';voidmain() => runApp(constMyApp());classMyAppextendsStatelessWidget{constMyApp({super.key});@overrideWidget build(BuildContext context) =>constMaterialApp( tit...
children:<Widget>[CountdownTimer( controller:controller, widgetBuilder:(BuildContextcontext,CurrentRemainingTime?time) {if(time==null) {returnText('Game over'); }List<Widget>list=[];if(time.sec!=null) { list.add(Row( children:<Widget>[Icon(Icons.sentiment_very_satisfied),Text(time.sec.toStr...
(Timertimer){for(inti=0;i<list.length;i++){vartempTime=list[i];if(tempTime==0){}else{tempTime-=1;}list[i]=tempTime;}print('哈哈哈哈哈哈哈');setState((){dataList=list;});});}@overrideWidgetbuild(BuildContextcontext){/// 写一个下拉刷新的列表 定时器加速问题returnScaffold(appBar:App...
import 'package:flutter_timer/BySetState.dart'; import 'package:flutter_timer/CountDownTimerState.dart'; import 'package:get/get.dart'; void main() { runApp(MyApp()); } class MyApp extends StatelessWidget { // This widget is the root of your application. @override Widget build(BuildContext...
import 'dart:async';import 'package:flutter/material.dart';const Color darkBlue = Color.fromARGB(255, 18, 32, 47);void main() {runApp(MyApp());}class MyApp extends StatelessWidget {@overrideWidget build(BuildContext context) {return MaterialApp(theme: ThemeData.dark().copyWith(scaffoldBackgro...
I want this design for setting a timer in a flutter as marked in the picture. How can I achieve this design. I searched for it but didn't find anything.解决方案: You can make use of a combination of widgets alongside ListWheelScrollView. class MyHomePage extends StatefulWidget { MyHomePage...
Would you like to check other interesting Flutter tutorials? Flutter Progress Indicator — (Circular + Linear) [2022 Code] Flutter Position Widget in Stack: 3 Top Ways to Know (2022) Share Article: Pinkesh Darji TwitterFollow me!
所有预定的Callback将在frame结束时按照它们被添加的顺序执行。到这个回调被调用的时候,可以保证Widget的构建过程已经完成。通过一些方法,你甚至可以访问Widget(RenderBox)的布局信息,比如它的大小,并做其他的一些事情。Callback本身将在正常的event queue中运行,Flutter默认使用该队列来处理几乎所有事情。
//main.dartimport'package:flutter/cupertino.dart';voidmain() => runApp(constTimerPickerApp());classTimerPickerAppextendsStatelessWidget{constTimerPickerApp({Key? key}) :super(key: key);@overrideWidget build(BuildContext context) {returnconstCupertinoApp( ...
所有预定的Callback将在frame结束时按照它们被添加的顺序执行。到这个回调被调用的时候,可以保证Widget的构建过程已经完成。通过一些方法,你甚至可以访问Widget(RenderBox)的布局信息,比如它的大小,并做其他的一些事情。Callback本身将在正常的event queue中运行,Flutter默认使用该队列来处理几乎所有事情。