dart

问题 @override Widget build(BuildContext context) { super.build(context); SystemChrome.setEnabledSystemUIOverlays(SystemUiOverlay.values); return AnnotatedRegion<SystemUiOverlayStyle>( value: SystemUiOverlayStyle( statusBarColor: Colors.transparent, ), child: Scaffold( key: _scaffoldKeyProfilePage, body: DefaultTabController( length: 2, child:RefreshIndicator( onRefresh: _onRefresh, child: NestedScrollView( headerSliverBuilder: (context, _) { return [ SliverList( delegate: SliverChildListDelegate(

问题 Is there any way to catch a keypress in textfield? In my case, when the user press enter key inside the text field, the values will be stored. For this to happen, I need to use Keypress-event like in Kotlin+Android. I just started trying flutter this week since it is interesting and cross-platform. RawKeyboardListener( child: TextFormField( keyboardType: TextInputType.text, decoration: new InputDecoration(labelText: "Phone"), validator: (val) => val.length == 0 ? 'Enter your phone' : null,

问题 @override Widget build(BuildContext context) { super.build(context); SystemChrome.setEnabledSystemUIOverlays(SystemUiOverlay.values); return AnnotatedRegion<SystemUiOverlayStyle>( value: SystemUiOverlayStyle( statusBarColor: Colors.transparent, ), child: Scaffold( key: _scaffoldKeyProfilePage, body: DefaultTabController( length: 2, child:RefreshIndicator( onRefresh: _onRefresh, child: NestedScrollView( headerSliverBuilder: (context, _) { return [ SliverList( delegate: SliverChildListDelegate(

问题 How can I make a wrapper over my private routes, which navigate to screen only when user is authorized, otherwise redirect to login and get back to the original screen after login. How can make this in a generalized way, so that I just reuse it on my other Private future screens? 回答1: If you are using routes parameter in your MaterialApp , you can replace it with following implementation import 'dart:collection'; import 'package:flutter/widgets.dart'; class ConditionalRouter extends MapMixin

问题 Actually in flutter DateTime.now() is returns device date and time. Users sometimes change their internal clock and using DateTime.now() can give wrong result. How can i get Network/Server Current DateTime in flutter ? Is it possible to get Network/Server Current DateTime Without using any packages ? Thanks in advance! 回答1: It's not possible without any api call. There is a plugin that allows you to get precise time from Network Time Protocol (NTP). It implements the whole NTP protocol in

问题 Actually in flutter DateTime.now() is returns device date and time. Users sometimes change their internal clock and using DateTime.now() can give wrong result. How can i get Network/Server Current DateTime in flutter ? Is it possible to get Network/Server Current DateTime Without using any packages ? Thanks in advance! 回答1: It's not possible without any api call. There is a plugin that allows you to get precise time from Network Time Protocol (NTP). It implements the whole NTP protocol in

问题 Actually in flutter DateTime.now() is returns device date and time. Users sometimes change their internal clock and using DateTime.now() can give wrong result. How can i get Network/Server Current DateTime in flutter ? Is it possible to get Network/Server Current DateTime Without using any packages ? Thanks in advance! 回答1: It's not possible without any api call. There is a plugin that allows you to get precise time from Network Time Protocol (NTP). It implements the whole NTP protocol in

问题 Actually in flutter DateTime.now() is returns device date and time. Users sometimes change their internal clock and using DateTime.now() can give wrong result. How can i get Network/Server Current DateTime in flutter ? Is it possible to get Network/Server Current DateTime Without using any packages ? Thanks in advance! 回答1: It's not possible without any api call. There is a plugin that allows you to get precise time from Network Time Protocol (NTP). It implements the whole NTP protocol in

问题 How can I make a wrapper over my private routes, which navigate to screen only when user is authorized, otherwise redirect to login and get back to the original screen after login. How can make this in a generalized way, so that I just reuse it on my other Private future screens? 回答1: If you are using routes parameter in your MaterialApp , you can replace it with following implementation import 'dart:collection'; import 'package:flutter/widgets.dart'; class ConditionalRouter extends MapMixin

问题 How can I make a wrapper over my private routes, which navigate to screen only when user is authorized, otherwise redirect to login and get back to the original screen after login. How can make this in a generalized way, so that I just reuse it on my other Private future screens? 回答1: If you are using routes parameter in your MaterialApp , you can replace it with following implementation import 'dart:collection'; import 'package:flutter/widgets.dart'; class ConditionalRouter extends MapMixin