This is a simple Weather App with Flutter using the Delegation Design Pattern instead of callbacks.
This app is using an external provider for fetching weather data, in order to have a working app you
have to signup to https://openweathermap.org/ and get a personal API_KEY to replace
the placeholder in weather_manager.dart:
final appId = 'YOUR_APP_ID';
The project has multiple folders:
- classes: contains the CustomOutlineInputBorder class, which extends the functionalities of the standard OutlineInputBorder overriding some methods
- delegates: contains the WeatherManagerDelegate abstract class with the two main methods to implement => didUpdateWeather() and didFailWithError()
- models: contains the model class for the Weather (WeatherModel), and the WeatherManager with all the logic for updating the weather
- services: includes the implementation of the library works with the LocationService in order to have a friendly API to use.
- screens: contains the main screen, the app is a one-page application.
You can use this project as reference on how to use the Delegation Design Pattern in Flutter. If you like it, please give it a star! :)