SwiftUI + Async Weather

Showing Weather forecast using SwiftUI + Async.

Select a area, and show daily forecasts, using OpenWeather API

Highlight of this app

• SwiftUI.framework
• Async/Await
  • used in network access
• Using LocationButton / AsyncImage, which are new APIs in iOS 15.
• Clean Architecture
  • View - ViewModel - Repository
• MKMapView with CoreLocation
  • GPS with async/await
  • detect tap and add pin at tap position
• Adapt dark mode with asset-catalog-colors
• Use WeatherKit in iOS16

how to run

• Install Xcode13.0 beta
• Build and Run

By default, this app will access local-json file.
If you want to use network-api, please do as following

• sign in OpenWeather and create Api Key
• rename Config-sample.plist to Config.plist
• Write your Api Key in Constants.plist

city_list.json from Openweather is too big (20MB!). So I shrinked it. Please check city_json/

WeatherKit

To run iOS16 devices, you need to set up your project as follows.

https://developer.apple.com/documentation/weatherkit/fetching_weather_forecasts_with_weatherkit

If you don't want to use WeatherKit, please change the WeatherRepository instance in Weather5DayFragment class.

file structure

• /
  +- Config-sample.plist : config base file. rename and set your key +- RootView.swift : view at app-launching
  +- Theme.swift : Color list
  +- asset/ : cities and sample json
  +- Entity/
  +- Network/
  +- PartsView/ : common views
  +- Repository/
  +- Utils/
  +- View
  += ViewModel

app structure

• Use Clean Architecture,
• avoid using @State in view.(except TextField, it requires state)
• use ViewModel for view state management.
• use Repository for fetching data

Basic Structure

Fragment - View - ViewModel - Repository

• Fragment
  • create ViewModel and put it to the environment.
  • create View with ViewModel
  • manage lifecycle-related-operation
• View
  • render view, created by Fragment
  • bind with ViewModel and call its functions.
• ViewModel
  • Manage View-State
  • BindableObject
• Repostiroy
  • Fetch data

thanks

• OpenWeather
• Many repositories using SwiftUI and authors.

Known issues

• Task.sleep crashed, so I created a method insted.
• Need to write cancllation code in ViewModels.