获取Firebase集合中的所有文档，并将其设置为static

Question

如何从firebase获取所有文档并将其设置为静态var？

示例

import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:firebase_auth/firebase_auth.dart';

FirebaseAuth auth = FirebaseAuth.instance;
FirebaseFirestore firestore = FirebaseFirestore.instance;

final officeRef = firestore.collection("office");

class CompanyData {

  ***static Map<String, dynamic> /id/ = {
  };***
}

从像这个FirebaseDB这样的火柴基地

我怎样才能得到这样的结果(*)，这样我就可以把它用在另一页上。

import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:firebase_auth/firebase_auth.dart';

class CompanyData {

FirebaseAuth auth = FirebaseAuth.instance;
FirebaseFirestore firestore = FirebaseFirestore.instance;

final officeRef = firestore.collection("office");

***
  static Map<String, dynamic> office1 = {
    'name': "OFFICE 1ST",
    'code': "c_office1",
    'latitude': -4.001,
    'longitude': 100.001,
  };
  static Map<String, dynamic> office2 = {
    'name': "OFFICE 2ND",
    'code': "c_office2",
    'latitude': -4.002,
    'longitude': 100.002,
  };
  static Map<String, dynamic> office3 = {
    'name': "OFFICE 3RD",
    'code': "c_office3",
    'latitude': -4.003,
    'longitude': 100.003,
  };
  static Map<String, dynamic> etc.....
}
***

不好意思，我还是很新鲜的。还有很多事情我不明白。

Answer 1

创建新文件static_variable.dart创建StaticVariable类如下所示：

class StaticVariable {
  static bool? navigateRedeem;
  static String? keywordJob;
  static User? myUser;
}

请求api在打开应用程序时，您可以在SplashScreen或任何您想要的地方请求api，这取决于您，

在数据响应之后，为StaticVariable设置新数据：

//request api here: var res = await request .....
StaticVariable.myUser = res['user]

然后，您可以在项目中的任何地方调用StaticVariable。

示例：

static.dart

class StaticVariable {
  static String? textHello;
}

main.dart

import 'package:demo/static.dart';
import 'package:flutter/material.dart';
import 'home.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatefulWidget {
  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {

  @override
  void initState() {
    super.initState();
    StaticVariable.textHello = 'Hihihi';
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: SafeArea(
        child: Scaffold(
          body: HomeScreen(),
        ),
      ),
    );
  }
}

home.dart

import 'package:demo/static.dart';
import 'package:flutter/material.dart';

class HomeScreen extends StatefulWidget {
  const HomeScreen({Key? key}) : super(key: key);

  @override
  State<HomeScreen> createState() => _HomeScreenState();
}

class _HomeScreenState extends State<HomeScreen> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Container(
        child: Text(StaticVariable.textHello ?? ''),
      ),
    );
  }
}

类似于请求api