小编hey*_*red的帖子

bash: flutter: command not found

嗨,大家好!显然没有扑命令正在Android的工作室,我相信,我想我的项目的根目录运行它的终端上.先感谢您

通过使用这个:

Text(new DateTime.fromMillisecondsSinceEpoch(values[index]["start_time"]*1000).toString(), 

我正在获得图片中附加的格式类型,但我想知道我是否可以获得它dd/MM/YYYY hh:mm？

  var userDetails = {};
  var i;
  List returnTicketDetails = [] ;

  body: new Column(
        children: <Widget>[
          new Container(
            color: Theme.of(context).primaryColor,
            child: new Padding(
              padding: const EdgeInsets.all(8.0),
              child: new Card(
                child: new ListTile(
                  leading: new Icon(Icons.search),
                  title: new TextField(
                    controller: controller,
                    decoration: new InputDecoration(
                        hintText: 'Search', border: InputBorder.none),
                   // onChanged: onSearchTextChanged,
                  ),
                  trailing: new IconButton(icon: new Icon(Icons.cancel), onPressed: () {
                    controller.clear();
                   // onSearchTextChanged('');
                  },),
                ),
          new Expanded(
            child: userDetails.length != 0 || controller.text.isNotEmpty
                ? new ListView.builder(
               itemCount: userDetails.length,
              itemBuilder: (context, i) …

  List returnMovies = [];

Future<List> _getData() async {

    final response = await http.get("https:../getTodayMovies",
        headers: {HttpHeaders.AUTHORIZATION: Acess_Token.access_token});


    if (response.body != null) {
    returnMovies = json.decode(response.body);
      .....

      setState(() {});
    } else {
       final responseUpcoming = await http.get("/upcoming",
        headers: {HttpHeaders.AUTHORIZATION: Acess_Token.access_token});
        returnMovies = json.decode(responseUpcoming.body);


    }

response.body 看起来像：

[{"id":394470548,"host_group_name":"heyab redda","movie_image":"..png","type":"horror","code":"X123","name":"Lovely","start_time":1554364800,"end_time":1554393600,"}]

responseUpcoming.body 看起来像：

 {"id":394470545,"host_group_name":"foo redda","movie_image":".png","type":"horror","code":"X123","name":"Lovely","start_time":1554364800,"end_time":1554393600,"}, {"id":394470548,"host_group_name":"foo1 redda","movie_image":"..png","type":"comic","code":"X125","name":"Lovely1","start_time":1554364800,"end_time":1554393600,"}

我得到的错误是： String, dynamic is not a subtype of type List<dynamic>。

在我执行的第一个 API 调用中，我通常会返回一个对象数组，但是，当它为空时，第二个 API 调用会返回一个我想推入名为 returnMovies 的数组中的对象列表，我该如何实现这个？？有没有办法将这些对象推送到数组中？？那么我想使用这个数组来动态构建一个 Listview.builder。我声明的方式是否正确？我对 Dart 很陌生。谢谢

     @override
      Widget build(BuildContext context) {
        widget.groupid;
        widget.event_id;
        var futureBuilder = new FutureBuilder(
          future: _getAllTickets(),

          builder: (BuildContext context, AsyncSnapshot snapshot) {
            print(snapshot.connectionState);
            switch (snapshot.connectionState) {
              case ConnectionState.none:
              case ConnectionState.waiting:
                return new Text('...');
              default:
                if (snapshot.hasError)
                  return new Text('Error: ${snapshot.error}');
                else
                  return createListTickets(context, snapshot);
            }
          },
        );



    return new Scaffold(

      body: futureBuilder,

    );
  }

  Widget createListTickets(BuildContext context, AsyncSnapshot snapshot) {
    List values = snapshot.data;

     child: new Card(

                child:
                new Column(mainAxisSize: MainAxisSize.min, children: <Widget>[
                  new Text(
                      values[index]["ticket_type_id"].toString(), style:
                  const TextStyle(
                      fontFamily: 'Poppins',
                      fontWeight: …

每当我从终端运行以下命令：flutter在ios的项目根目录中构建ios时，我都会得到回报：

找不到“ xcodebuild”。为iOS开发，需要Xcode 9.0或更高版本。

为设备构建时遇到错误。我拥有最新的Xcode（版本10.0）。

扑医生：

[?] Flutter (Channel beta, v0.8.2, on Mac OS X 10.13.6 17G65, locale en-GB)
    • Flutter version 0.8.2 at /Users/h/flutter
    • Framework revision 5ab9e70727 (2 weeks ago), 2018-09-07 12:33:05 -0700
    • Engine revision 58a1894a1c
    • Dart version 2.1.0-dev.3.1.flutter-760a9690c2

[?] Android toolchain - develop for Android devices (Android SDK 27.0.3)
    • Android SDK at /Users/h/Library/Android/sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-27, …

在应用程序启动时，我收到此错误：SocketException: Failed host lookup: '..co' (OS Error: nodename or servname provided, or not known, errno = 8)

另外我的 flutter docotor -v 输出是：

Heyabs-MacBook-Pro:flutterLoginApp-master4OK heyab$ flutter doctor -v
[?] Flutter (Channel stable, v1.0.0, on Mac OS X 10.13.6 17G65, locale en-GB)
    • Flutter version 1.0.0 at /Users/heyab/flutter
    • Framework revision 5391447fae (3 months ago), 2018-11-29 19:41:26 -0800
    • Engine revision 7375a0f414
    • Dart version 2.1.0 (build 2.1.0-dev.9.4 f9ebf21297)

[?] Android toolchain - develop for Android devices (Android SDK 27.0.3)
    • Android …

我正在对组件进行一些单元测试。但是，在某些组件中，我有一些运行在mounted钩子上的东西使我的测试失败。我设法模拟了我不需要的方法。但是，我想知道是否有一种解决方法来模拟mounted钩子本身。

@/components/attendeesList.vue

<template>
  <div>
    <span> This is a test </span> 
  </div>
</template>

JS

<script>
methods: {
    testMethod: function() {
        // Whatever is in here I have managed to mock it
    }
},

mounted: {
    this.testMethod();
}
</script>

测试规范.js

import { mount, shallowMount } from '@vue/test-utils'
import test from '@/components/attendeesList.vue'

describe('mocks a method', () => {    
  test('is a Vue instance', () => {
  const wrapper = shallowMount(attendeesList, {
    testMethod:jest.fn(),
  })
  expect(wrapper.isVueInstance()).toBeTruthy()
})

每当我运行flutter构建IOS时,它似乎工作正常,但是当它达到"构建Dart代码"时,它就会永远卡在那里.然而,我之前能够成功运行flutter build apk.

这是颤动的医生-v输出:

[?] Flutter (Channel beta, v0.11.3, on Mac OS X 10.13.6 17G65, locale en-GB)
    • Flutter version 0.11.3 at /Users/../flutter
    • Framework revision 72bf075e8d (4 days ago), 2018-11-09 20:36:17 -0800
    • Engine revision 5646e86a6f
    • Dart version 2.1.0 (build 2.1.0-dev.9.3 9c07fb64c4)

[?] Android toolchain - develop for Android devices (Android SDK 27.0.3)
    • Android SDK at /Users/../Library/Android/sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-27, build-tools 27.0.3
    • Java binary …

new Expanded(

        child: _searchResult.length != 0 || controller.text.isNotEmpty
            ? new ListView.builder(
                itemCount: _searchResult.length,
                itemBuilder: (context, int i) {

                  return new Card(

                      child: new Column(
                          mainAxisSize: MainAxisSize.min,
                          children: <Widget>[
                        new Row(children: <Widget>[
                          //new GestureDetector(),

                          new Container(

                              width: 45.0,
                              height: 45.0,
                              decoration: new BoxDecoration(
                                  shape: BoxShape.circle,
                                  image: new DecorationImage(
                                      fit: BoxFit.fill,
                                      image: new NetworkImage(
                                          "https://raw.githubusercontent.com/flutter/website/master/_includes/code/layout/lakes/images/lake.jpg")))),
                          new Text(
                              " " +
                                  userDetails[returnTicketDetails[i]
                                      ["user_id"]]["first_name"] +
                                  " " +
                                  (userDetails[returnTicketDetails[i]
                                      ["user_id"]]["last_name"]),
                              style: const TextStyle(
                                  fontFamily: 'Poppins', fontSize: 20.0)),
                        ]),
                        new Column(
                          children: <Widget>[
                            new Align( …

new Container(

                  width: 80.0,
                  height: 80.0,
                  decoration: new BoxDecoration(

                      shape: BoxShape.circle,
                      image: new DecorationImage(
                          fit: BoxFit.fill,
                          image: new NetworkImage(widget.profile_picture)))),

目前，我有一个NetworkImage，但是我希望有一个圆形的CachedNetworkImage。

    class Tickets extends StatefulWidget {

      int groupid;
      int event_id;

      Tickets([this.groupid, this.event_id]);

      @override
      _TicketsState createState() => new _TicketsState();
    }
     List<Widget> ListMyWidgets(ticketGroups) {

    IconData icon = Icons.undo;
    List<Widget> list = new List();
    list.add(new CupertinoNavigationBar(
      backgroundColor: Colors.blue,
      leading:
          new Padding(
        padding: new EdgeInsets.all(8.0),
        child: new Text(ticketGroups[0]['ticket_name'],
            style: const TextStyle(
                fontSize: 20.0, fontFamily: 'Poppins', color: Colors.white)),
      ),

      trailing: new Padding(
          padding: new EdgeInsets.all(8.0),
          child: new Text('${ticketGroups.length}',
              style: const TextStyle(
                  fontSize: 20.0, fontFamily: 'Poppins', color: Colors.white))),


    ));


      for (int i = 0; i < ticketGroups.length; …

我想突出显示此卡的边框，因此用户将看到已选择了特定卡。