GetIt in action

Introduction to the Dart service locator GetIt

Transcript

1. GetIt in action Make your live easier Thomas Burkhart @ThomasBurkhartB
2. Interactions inside an RxVMS App Login View Authentication Service User Manager RxComandsF unction calls (async) function calls or Streams Streams Map View Invoice Detail View Invoice Manager Database Service Location Service ** ** Can be (async) function calls or Streams or RxCommands. But should be limited as much as possible to avoid unnecessary coupling.
3. How to access Managers / Services • Inherited Widgets • Provider ◦ both are part of the widget tree and requires a BuildContext • ServiceLocator GetIt ◦ Super fast ◦ No context needed ◦ Easy to use
4. Easy to use and understand
5. do
6. Different types of Registration
7. Easily switch out Implementations
8. Injection Pattern for Testing
9. Async Registrations
10. Startup orchestration with async initialization ConfigService DbService RestAPIService AppModel Depends on
11. Registration
12. Waiting for end of initialisation
13. Is that all? • Factories with Parameters • Manual synchronisation by using ◦ getIt.signalReady(instance); ◦ getIt.isReady<DbService>(); • Named Instances if you really need to register multiple instances of the same type
14. Resources • My blog: https://www.burkharts.net/apps/blog/ • You can find me on Twitter @ThomasBurkhartsB • And on most chats under ‚escamoteur‘
15. Questions?