SAAsyncView – Asynchronous loading operations in SwiftUI

SwiftUI View component is developed for handling in-progress and error states when loading data asynchronously. This serves as an exercise in creating abstractions and using Swift generics in practice.
SAAsyncView is a SwiftUI View for handling in-progress and error states when loading data asynchronously using async/await.
The resulting component is suitable as a ready-made package for use in projects that merely want to load data from URL endpoints and display it via SwiftUI, as well as a starting point for projects that require a more complex structure.

Loading State	Success State	Failure State

Swift Package Manager

The Swift Package Manager is a tool for automating the distribution of Swift code and is integrated into the swift compiler.

Once you have your Swift package set up, adding SAAsyncView as a dependency is as easy as adding it to the dependencies value of your Package.swift.

https://github.com/ngodacdu/swiftui-async-view

How to use

You can use AsyncView or AsyncModelView:
- Use AsyncView if not create model and providing an operation (async task)
- Use AsyncModelView if create model and providing an async operation
SAAsyncView manages 4 states:
- Empty: display view in empty state
- Loading: display view in loading state, await async task excute
- Success: display view after async task finished
- Failure: an error was thrown during the execution of the async task

1. Using AsyncView

  AsyncView(
      operation: { try await Endpoint.shared.countries() },
      empty: {
          EmptyView()
      },
      loading: {
          ProgressView()
      },
      success: { countries in
          List(countries) { country in
              Text(country.name)
          }
      },
      failure: { error in
          Text(error.localizedDescription)
      }
  )

2. Using AsyncModelView

  AsyncModelView(
      model: AsyncModel<[Country]>(asyncOperation: { try await Endpoint.shared.countries() }),
      empty: {
          EmptyView()
      },
      loading: {
          ProgressView()
      },
      success: { countries in
          List(countries) { country in
              Text(country.name)
          }
      },
      failure: { error in
          Text(error.localizedDescription)
      }
  )

Documentation

Ref: https://www.ralfebert.com/ios-app-development/swiftui/asyncview/