股票配资广告图片: 华为消费者业务调整:张晓云不再担任CMO 朱勇刚接替

文章来源: 中国资源网    发布时间: 2019年10月28日 20:41   【字号:      】

  

   股票配资广告图片: 如果被动的第二或者第三个推出新产品,那么获得的利益肯定就远不如第一家企业。

   一天,CEO 告诉我约好了和平台侧的朋友合家欢一起出国旅行。

   (消费品里面有个巨大的问题,就在于你可能卖掉200万份都是赚钱的,但是最终手上有50万份库存,最后一算账是巨亏) 交通行业也一样,下大雨的时候在滴滴上打不到车。 根据美国公共卫生部门的数据,全美与电子烟相关的死亡病例已经上升到6起,疑似电子烟引起的严重肺病案例也超过450例。

   var default_decoration = BoxDecoration( border: Border.all(width: 3, color: Colors.deepOrange), borderRadius: BorderRadius.all( Radius.circular(5), )); ... ... child: Container( margin: EdgeInsets.all(8), decoration: default_decoration, child: widget.child, )); 最后给大家一个完整的最新的技术方案的例子代码: 先绘制欢迎页,效果图如下: 代码如下: // 启动欢迎页 import dart:async; import package:flutter/material.dart; import package:flutter/services.dart; import ui/tv_page.dart; void main => runApp(MyApp); class MyApp extends StatelessWidget { @override Widget build(BuildContext context) { SystemChrome.setEnabledSystemUIOverlays([]); // 强制横屏 SystemChrome.setPreferredOrientations([ DeviceOrientation.landscapeLeft, DeviceOrientation.landscapeRight ]); return MaterialApp( title: Flutter TV, debugShowCheckedModeBanner: false, theme: ThemeData( primarySwatch: Colors.blue, ), home: MyHomePage, ); } } class MyHomePage extends StatefulWidget { @override _MyHomePageState createState => _MyHomePageState; } class _MyHomePageState extends State<MyHomePage> { Timer timer; @override void initState { startTimeout; super.initState; } @override Widget build(BuildContext context) { return Scaffold( primary: true, backgroundColor: Colors.black54, body: Center( child: Text( 芒果TV, style: TextStyle( fontSize: 50, color: Colors.deepOrange, fontWeight: FontWeight.normal), ), ), ); } _toPage { Navigator.pushAndRemoveUntil( context, MaterialPageRoute(builder: (context) => TVPage), (route) => route == null, ); } //倒计时处理 static const timeout = const Duration(seconds: 3); startTimeout { timer = Timer(timeout, handleTimeout); return timer; } void handleTimeout { _toPage; } @override void dispose { if (timer != null) { timer.cancel; timer = null; } super.dispose; } } 应用首页,效果图如下: 代码如下: // 应用首页 import dart:async; import package:flutter/material.dart; import package:flutter/services.dart; import package:flutter_tv/utils/time_utils.dart; import package:flutter_tv/widgets/tv_widget.dart; import home_page.dart; import list_page.dart; class TVPage extends StatefulWidget { @override State<StatefulWidget> createState { SystemChrome.setEnabledSystemUIOverlays([]); // 强制横屏 SystemChrome.setPreferredOrientations( [DeviceOrientation.landscapeLeft, DeviceOrientation.landscapeRight]); return TVPageState; } } class TVPageState extends State<TVPage> with SingleTickerProviderStateMixin { TabController _tabController; Timer timer; var timeString = TimeUtils.getTime; bool init = false; FocusNode focusNodeB0 = FocusNode; FocusNode focusNodeB1 = FocusNode; @override void initState { super.initState; //initialIndex为初始选中第几个,length为数量 _tabController = TabController(initialIndex: 0, length: 8, vsync: this); // 监听 _tabController.addListener( { switch (_tabController.index) { case 0: break; case 1: break; } }); focusNodeB0.addListener( { if (focusNodeB0.hasFocus) { setState( { _tabController.animateTo(0); }); } }); focusNodeB1.addListener( { if (focusNodeB1.hasFocus) { setState( { _tabController.animateTo(1); }); } }); } @override Widget build(BuildContext context) { return Container( color: Colors.black87, padding: EdgeInsets.all(30), child: Scaffold( appBar: AppBar( backgroundColor: Colors.black87, leading: Icon( Icons.live_tv, color: Colors.deepOrange, size: 50, ), title: Text( 芒果TV, style: TextStyle( fontSize: 30, color: Colors.white, fontStyle: FontStyle.italic), ), primary: true, actions: <Widget>[ FlatButton( child: Text( $timeString, style: TextStyle(color: Colors.white), ), ), ], // 设置TabBar bottom: TabBar( controller: _tabController, indicatorColor: Colors.deepOrange, labelColor: Colors.deepOrange, unselectedLabelColor: Colors.white, tabs: <Widget>[ Tab( child: TVWidget( hasDecoration: false, focusChange: (hasFocus) { if (hasFocus) { setState( { _tabController.animateTo(0); }); } }, child: Text( 首页, style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold), ), requestFocus: true, ), ), Tab( child: TVWidget( hasDecoration: false, focusChange: (hasFocus) { if (hasFocus) { setState( { _tabController.animateTo(1); }); } }, child: Text( 精选, style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold), ), )), Tab( child: TVWidget( hasDecoration: false, focusChange: (hasFocus) { if (hasFocus) { setState( { _tabController.animateTo(2); }); } }, onclick: { print(点击); }, child: Text( 国产, style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold), ), )), Tab( child: TVWidget( hasDecoration: false, focusChange: (hasFocus) { if (hasFocus) { setState( { _tabController.animateTo(3); }); } }, child: Text( 欧美, style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold), ), )), Tab( child: TVWidget( hasDecoration: false, focusChange: (hasFocus) { if (hasFocus) { setState( { _tabController.animateTo(4); }); } }, child: Text( 日漫, style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold), ), ), ), Tab( child: TVWidget( hasDecoration: false, focusChange: (hasFocus) { if (hasFocus) { setState( { _tabController.animateTo(5); }); } }, child: Text( 亲子, style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold), ), ), ), Tab( child: TVWidget( hasDecoration: false, focusChange: (hasFocus) { if (hasFocus) { setState( { _tabController.animateTo(6); }); } }, child: Text( 少综, style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold), ), ), ), Tab( child: TVWidget( focusChange: (hasFocus) { if (hasFocus) { setState( { _tabController.animateTo(7); }); } }, hasDecoration: false, child: Text( 分类, style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold), ), ), ), ], ), ), body: TabBarView( controller: _tabController, children: <Widget>[ HomePage, ListPage, HomePage, ListPage, HomePage, ListPage, HomePage, ListPage, ], ), ), ); } startTimeout { timer = Timer.periodic(Duration(minutes: 1), (t) { setState( { timeString = TimeUtils.getTime; }); }); } @override void dispose { if (timer != null) { timer.cancel; timer == null; } super.dispose; } } // TAB页面中的其中一个页面,其他类似 import package:flutter/material.dart; import package:flutter/widgets.dart; import package:flutter_tv/widgets/tv_widget.dart; class HomePage extends StatefulWidget { const HomePage({ Key key, @required this.index, }) : super(key: key); final int index; @override State<StatefulWidget> createState { return HomePageState; } } class HomePageState extends State<HomePage> with AutomaticKeepAliveClientMixin { @override void initState { super.initState; } @override Widget build(BuildContext context) { return Container( color: Colors.black87, child: Row( children: <Widget>[ Flexible( child: Column( children: <Widget>[ _buildItem(0), _buildItem(1), _buildItem(2), ], ), flex: 1, ), Flexible( child: Column( children: <Widget>[ _buildImageItem(3, 2), Expanded( flex: 1, child: Row( children: <Widget>[ _buildImageItem(4, 1), _buildImageItem(5, 1), ], )), ], ), flex: 4, ), Flexible( child: Column( children: <Widget>[ _buildImageItem(6, 2), _buildImageItem(7, 1), ], ), flex: 2, ), Flexible( child: Column( children: <Widget>[ _buildImageItem(8, 2), _buildImageItem(9, 1), ], ), flex: 2, ), ], ), ); } _buildItem(int index) { return Expanded( child: TVWidget( focusChange: (hasfocus) {}, child: Container( width: MediaQuery.of(context).size.width, child: GestureDetector( child: Card( elevation: 5, margin: EdgeInsets.all(0), color: _colors.elementAt(index), child: Container( child: Column( crossAxisAlignment: CrossAxisAlignment.center, mainAxisAlignment: MainAxisAlignment.center, children: <Widget>[ _icons.elementAt(index), _title.elementAt(index), ], ), ), ), onTap: { _click(index); }, ), )), flex: 1, ); } _buildImageItem(int index, int flex) { return Expanded( child: TVWidget( child: Container( width: MediaQuery.of(context).size.width, child: GestureDetector( child: Card( elevation: 5, margin: EdgeInsets.all(0), color: _colors.elementAt(index), child: Container( child: Stack( alignment: Alignment.bottomLeft, children: <Widget>[ ClipRRect( child: Image.asset( _images.elementAt(index), fit: BoxFit.fill, width: MediaQuery.of(context).size.width, height: MediaQuery.of(context).size.height, ), borderRadius: BorderRadius.all( Radius.circular(5), ), ), Container( width: MediaQuery.of(context).size.width, child: Column( mainAxisSize: MainAxisSize.min, crossAxisAlignment: CrossAxisAlignment.start, children: <Widget>[ _title.elementAt(index), index == 3 ? _des.elementAt(index) : SizedBox( height: 0, ), ], ), color: _colors.elementAt(index).withAlpha(240), padding: EdgeInsets.all(5), ), ], ), ), ), onTap: { _click(index); }, ), ), focusChange: (hasfocus) {}, ), flex: flex, ); } void _click(int index) { switch (index) { case 0: break; case 4: // Navigator.push(context, MaterialPageRoute(builder: (context) { // return AboutPage; // })); break; } } List<Icon> _icons = [ Icon( Icons.search, size: 38, color: Colors.white, ), Icon( Icons.history, size: 38, color: Colors.white, ), Icon( Icons.event, size: 38, color: Colors.white, ), Icon( Icons.share, size: 38, color: Colors.deepPurpleAccent, ), Icon( Icons.error_outline, size: 38, color: Colors.orange, ), Icon( Icons.settings, size: 38, color: Colors.red, ) ]; List<String> _images = [ assets/htpy.jpg, assets/htpy.jpg, assets/htpy.jpg, assets/htpy.jpg, assets/agzz.jpg, assets/amypj.jpg, assets/hmjz.jpg, assets/dxflqm.jpg, assets/lifeandpi.jpg, assets/nanasqc.jpg, ]; List<Color> _colors = [ Colors.red, Colors.orange, Colors.green, Colors.red, Colors.orange, Colors.green, Colors.orange, Colors.orange, Colors.orange, Colors.orange, ]; List<Text> _title = [ Text( 搜索, style: TextStyle(color: Colors.white, fontSize: 18), ), Text( 历史, style: TextStyle(color: Colors.white, fontSize: 18), ), Text( 专题, style: TextStyle(color: Colors.white, fontSize: 18), ), Text( 环太平洋, style: TextStyle(color: Colors.white, fontSize: 18), ), Text( 阿甘正传, style: TextStyle(color: Colors.white, fontSize: 18), ), Text( 傲慢与偏见, style: TextStyle(color: Colors.white, fontSize: 18), ), Text( 黑猫警长, style: TextStyle(color: Colors.white, fontSize: 18), ), Text( 当幸福来敲门, style: TextStyle(color: Colors.white, fontSize: 18), ), Text( Life Or PI, style: TextStyle(color: Colors.white, fontSize: 18), ), Text( 哪啊哪啊神去村, style: TextStyle(color: Colors.white, fontSize: 18), ), ]; List<Text> _des = [ Text( 非常好看的电影, style: TextStyle(color: Colors.white, fontSize: 12), ), Text( 设置密码锁, style: TextStyle(color: Colors.white, fontSize: 12), ), Text( 吐槽反馈你的想法, style: TextStyle(color: Color.fromRGBO(162, 162, 162, 1), fontSize: 16), ), Text( 非常好看的电影, style: TextStyle(color: Colors.white, fontSize: 12), ), Text( 版本信息, style: TextStyle(color: Color.fromRGBO(162, 162, 162, 1), fontSize: 16), ), Text( 系统相关设置, style: TextStyle(color: Color.fromRGBO(162, 162, 162, 1), fontSize: 16), ), Text( 系统相关设置, style: TextStyle(color: Color.fromRGBO(162, 162, 162, 1), fontSize: 16), ), ]; @override // TODO: implement wantKeepAlive bool get wantKeepAlive => true; } 封装的核心类: // 封装的核心焦点处理类 import package:flutter/material.dart; import package:flutter/services.dart; import package:flutter/widgets.dart; class TVWidget extends StatefulWidget { TVWidget( {Key key, @required this.child, @required this.focusChange, @required this.onclick, @required this.decoration, @required this.hasDecoration = true, @required this.requestFocus = false}) : super(key: key); Widget child; onFocusChange focusChange; onClick onclick; bool requestFocus; BoxDecoration decoration; bool hasDecoration; @override State<StatefulWidget> createState { return TVWidgetState; } } typedef void onFocusChange(bool hasFocus); typedef void onClick; class TVWidgetState extends State<TVWidget> { FocusNode _focusNode; bool init = false; var default_decoration = BoxDecoration( border: Border.all(width: 3, color: Colors.deepOrange), borderRadius: BorderRadius.all( Radius.circular(5), )); var decoration = null; @override void initState { super.initState; _focusNode = FocusNode; _focusNode.addListener( { if (widget.focusChange != null) { widget.focusChange(_focusNode.hasFocus); } if (_focusNode.hasFocus) { setState( { if (widget.hasDecoration) { decoration = widget.decoration == null ? default_decoration : widget.decoration; } }); } else { setState( { decoration = null; }); } }); } @override Widget build(BuildContext context) { if (widget.requestFocus && !init) { FocusScope.of(context).requestFocus(_focusNode); init = true; } return RawKeyboardListener( focusNode: _focusNode, onKey: (event) { if (event is RawKeyDownEvent && event.data is RawKeyEventDataAndroid) { RawKeyDownEvent rawKeyDownEvent = event; RawKeyEventDataAndroid rawKeyEventDataAndroid = rawKeyDownEvent.data; print(keyCode: ${rawKeyEventDataAndroid.keyCode}); switch (rawKeyEventDataAndroid.keyCode) { case 19: //KEY_UP // DefaultFocusTraversal.of(context).inDirection( // FocusScope.of(context).focusedChild, TraversalDirection.up); FocusScope.of(context) .focusInDirection(TraversalDirection.up); break; case 20: //KEY_DOWN FocusScope.of(context) .focusInDirection(TraversalDirection.down); break; case 21: //KEY_LEFT // FocusScope.of(context).requestFocus(focusNodeB0); FocusScope.of(context) .focusInDirection(TraversalDirection.left); // 手动指定下一个焦点 // FocusScope.of(context).requestFocus(focusNode); break; case 22: //KEY_RIGHT // FocusScope.of(context).requestFocus(focusNodeB1); FocusScope.of(context) .focusInDirection(TraversalDirection.right); // DefaultFocusTraversal.of(context) // .inDirection(_focusNode, TraversalDirection.right); // if(_focusNode.nextFocus){ // FocusScope.of(context) // .focusInDirection(TraversalDirection.right); // } break; case 23: //KEY_CENTER widget.onclick; break; case 66: //KEY_ENTER widget.onclick; break; default: break; } } }, child: Container( margin: EdgeInsets.all(8), decoration: decoration, child: widget.child, )); } } 好了,关于Flutter TV开发就讲解这么多。 第二是关键的指标如完成率要每天推给各个业务线的负责人及公司CEO,督促业务部门完成业务目标。

   通常,开发人员根据如下特点来选用PHP: 支持数据库管理系统,且开源。 虽然我们在同一个赛道上,但是我们市场是不一样的。 受惠于改制的金通橡胶公司,“混改”前资不抵债,“混改”后利润连年翻番增长,2015年实现702万元、2016年实现1559万元、2017年实现3000万元,2017年职工工资增幅13%。

   C.专家指出,只要采取“绿色生活方式”,使家里的每件物品都物尽其用,就可将家庭产生的垃圾量降低25%,化学洗涤用品的使用量减少三分之二。

  




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