environment_manager 0.0.3 copy "environment_manager: ^0.0.3" to clipboard
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A environment manager in multiple network environments.

example/lib/main.dart

import 'package:environment_manager/environment_manager.dart';
import 'package:flutter/material.dart';

void main() async {
  WidgetsFlutterBinding.ensureInitialized();

  EnvironmentManager().defaultEnvironmentType = EnvironmentType.test;

  EnvironmentManager().registerEnvironmentConfig(
    EnvironmentConfig()
      ..name = 'abc'
      ..displayName = '测试'
      ..addConfig(EnvironmentType.product, 'url', 'product')
      ..addConfig(EnvironmentType.test, 'url', 'test'),
  );

  EnvironmentManager().registerEnvironmentConfig(
    EnvironmentConfig()
      ..name = 'abc2'
      ..displayName = '测试2'
      ..addConfig(EnvironmentType.product, 'url', 'product---')
      ..addConfig(EnvironmentType.test, 'url', 'test---'),
  );

  await EnvironmentManager().loadEnvironmentConfig();

  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return EnvironmentIndicatorWidget(
      child: MaterialApp(
        title: 'Flutter Demo',
        theme: ThemeData(
          // This is the theme of your application.
          //
          // Try running your application with "flutter run". You'll see the
          // application has a blue toolbar. Then, without quitting the app, try
          // changing the primarySwatch below to Colors.green and then invoke
          // "hot reload" (press "r" in the console where you ran "flutter run",
          // or simply save your changes to "hot reload" in a Flutter IDE).
          // Notice that the counter didn't reset back to zero; the application
          // is not restarted.
          primarySwatch: Colors.blue,
        ),
        home: MyHomePage(title: 'Flutter Demo Home Page'),
      ),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key, this.title}) : super(key: key);

  // This widget is the home page of your application. It is stateful, meaning
  // that it has a State object (defined below) that contains fields that affect
  // how it looks.

  // This class is the configuration for the state. It holds the values (in this
  // case the title) provided by the parent (in this case the App widget) and
  // used by the build method of the State. Fields in a Widget subclass are
  // always marked "final".

  final String title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;

  void _incrementCounter() {
    setState(() {
      // This call to setState tells the Flutter framework that something has
      // changed in this State, which causes it to rerun the build method below
      // so that the display can reflect the updated values. If we changed
      // _counter without calling setState(), then the build method would not be
      // called again, and so nothing would appear to happen.
      _counter++;
    });
  }

  @override
  Widget build(BuildContext context) {
    // This method is rerun every time setState is called, for instance as done
    // by the _incrementCounter method above.
    //
    // The Flutter framework has been optimized to make rerunning build methods
    // fast, so that you can just rebuild anything that needs updating rather
    // than having to individually change instances of widgets.
    return Scaffold(
      appBar: AppBar(
        // Here we take the value from the MyHomePage object that was created by
        // the App.build method, and use it to set our appbar title.
        title: Text(widget.title),
      ),
      body: SwitchEnvironmentWidget(),
      floatingActionButton: FloatingActionButton(
        onPressed: _incrementCounter,
        tooltip: 'Increment',
        child: Icon(Icons.add),
      ), // This trailing comma makes auto-formatting nicer for build methods.
    );
  }
}
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A environment manager in multiple network environments.

Repository (GitHub)
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License

Apache-2.0 (LICENSE)

Dependencies

flutter, logging, shared_preferences

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