dependency_injector 0.0.2+2

A dependency injection system for Flutter that automatically calls cancel, close and dispose methods, if any.

Dependency Injector

A dependency injection system for Flutter that automatically calls cancel, close and dispose methods, if any.

Getting Started

Configure the services you want to use in your application.

final services = [
  Transient(() => SomeService()),
  Singleton(() => Repository()),
];

Place the RootInjector with your services list in the root of your application, and wrap the widget where you want to inject the service in the Injector.

void main() {
  runApp(RootInjector(
    services: services,
    child: Injector(() => MyApp()),
  ));
}

Inject your service using the inject property.

class MyApp extends StatelessWidget {
  MyApp({Key key}) : super(key: key);

  final SomeService someService = inject();

  ...
}

Complete example.

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

class SomeService {
  final Repository repository = inject();
}

class Repository {
  String getData() => 'Hello world.';
}

final services = [
  Transient(() => SomeService()),
  Singleton(() => Repository()),
];

void main() {
  runApp(RootInjector(
    services: services,
    child: Injector(() => MyApp()),
  ));
}

class MyApp extends StatelessWidget {
  MyApp({Key key}) : super(key: key);

  final SomeService someService = inject();

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: ThemeData(
        primarySwatch: Colors.blue,
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: Scaffold(
        body: Center(child: Text(someService.repository.getData())),
      ),
    );
  }
}

Documentation coming soon.

For now you can look at the source code of the example and run it.