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Description:

global configuration

Flutter Global Configuration #
A flutter package for managing different configurations by merging them together and making
them available everythere inside the app via a singleton.
Table of Contents #

Flutter Global Configuration

Table of Contents
Preamble
Install

pubspec.yaml

Import
Loading configuration

Load from asset

Creating a configuration file inside assets/cfg folder
Load configuration from assets at app start

Load from path

Creating a configuration file anywhere
Load configuration from path at app start

Load from path into key
Load from map

Creating a configuration inside .dart file
Load configuration from map at app start

Load from url

Load configuration from url at app start

Using the configuration in your app
Overriding configuration

Full example

Changelog
Copyright and license

Preamble #
This package is also part of the EZ Flutter Framework.
Install #
pubspec.yaml #
Update pubspec.yaml and add the following line to your dependencies.
dependencies:
global_configuration: ^2.0.0
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Import #
Import the package with :
import 'package:global_configuration/global_configuration.dart';
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Loading configuration #
There are many ways where you can store your configuration files and load them.
Load from asset #
Creating a configuration file inside assets/cfg folder
Create a .json file and place it under assets/cfg/
Example filename: assets/cfg/app_settings.json
{
"key1": "value1",
"key2": "value2"
}
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Remember to update your pubspec.yaml file, so the config can be loaded from the assets directory!
The config files must be placed under the assets/cfg/ directory.
flutter:
assets:
- assets/cfg/
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Load configuration from assets at app start
import 'package:flutter/material.dart';
import 'package:global_configuration/global_configuration.dart';

void main() async{
await GlobalConfiguration().loadFromAsset("app_settings");
runApp(MyApp());
}
class MyApp extends StatelessWidget {
...
}
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Load from path #
Creating a configuration file anywhere
Create a file anywhere inside your app.
Load configuration from path at app start
import 'package:flutter/material.dart';
import 'package:global_configuration/global_configuration.dart';

void main() async {
await GlobalConfiguration().loadFromPath("/path/file.json");
runApp(MyApp());
}
class MyApp extends StatelessWidget {
...
}
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Load from path into key #
The same as loadFromPath, but the config is added under the given key.
import 'package:flutter/material.dart';
import 'package:global_configuration/global_configuration.dart';

void main() async {
await GlobalConfiguration().loadFromPathIntoKey("/path/file.json", "env_settings");
runApp(MyApp());
}
class MyApp extends StatelessWidget {
...
}
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Load from map #
Creating a configuration inside .dart file
Create a dart file which includes your configuration and import it in your main file.
Example filename: /config/app_settings.config.dart
final Map<String, String> appSettings = {
"key1": "value1",
"key2": "value2"
};
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Load configuration from map at app start
import 'package:flutter/material.dart';
import 'package:global_configuration/global_configuration.dart';
import 'config/app_settings.config.dart';

void main() async {
GlobalConfiguration().loadFromMap(appSettings);
runApp(MyApp());
}
class MyApp extends StatelessWidget {
...
}
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Load from url #
It is possible to load any json configuration file from a url. Use the method loadFromUrl to load
the config via GET request.
Please consider using a try / catch. This method will throw an exception if the status code of the
GET request is not 200.
The method also accepts query parameters and headers! The header "Accept: application/json" is always
included.
Load configuration from url at app start
import 'package:flutter/material.dart';
import 'package:global_configuration/global_configuration.dart';

void main() async{
try{
await GlobalConfiguration().loadFromUrl("http://urlToMyConfig.com");
}catch(e){
// something went wrong while fetching the config from the url ... do something
}
runApp(MyApp());
}
class MyApp extends StatelessWidget {
...
}
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Using the configuration in your app #
Instatiate the GlobalConfiguration class and call any get($key) method.
import 'package:flutter/material.dart';
import 'package:global_configuration/global_configuration.dart';

class CustomWidget extends StatelessWidget {

CustomWiget(){
// Access the config in the constructor
print(GlobalConfiguration().getString("key1")); // prints value1
}

@override
Widget build(BuildContext context) {
// Access the config in the build method
return Text(GlobalConfiguration().getString("key2")); // prints value2
}
}
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Overriding configuration #
Sometimes it is necessary to override data in the configuration. This can be done by the updateValue method.
This method makes a check for the given type of the value and then performs an update the configuration map.
Map<String, String> appSettings = {
"key1": "value1",
"key2": 1
};
GlobalConfiguration().loadFromMap(appSettings); // loading the configuration
print(GlobalConfiguration().getString("key1")); // output : value1
print(GlobalConfiguration().getString("key2")); // output : 1
GlobalConfiguration().updateValue("key1", "value2"); // update the value for key1
GlobalConfiguration().updateValue("key2", 2); // update the value for key2
print(GlobalConfiguration().getString("key1")); // output : value2
print(GlobalConfiguration().getString("key2")); // output : 2
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Full example #
You can find a full example in the example folder.
Changelog #
For a detailed changelog, see the CHANGELOG.md file
Copyright and license #
MIT License
Copyright (c) 2023 Ephenodrom
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.