Async location streamer using new concurrency model in Swift
Features
- Using new concurrency swift model around CoreLocation
- Streaming current locations asynchronously
- Customizable in terms of accuracy
- Errors handling
How to use
1. Add to info the option “Privacy – Location When In Use Usage Description”
2. Add or inject LMViewModel into a View
@EnvironmentObject var model: LMViewModel
3. call ViewModel method start() within async environment of the View
Task{
do{
try await viewModel.start()
}catch{
self.error = error.localizedDescription
}
}
4. Bake into visual presentation async stream of data from “locations” property of the ViewModel
@ViewBuilder
var coordinatesTpl: some View{
List(viewModel.locations, id: \.hash) { location in
Text("\(location.coordinate.longitude), \(location.coordinate.latitude)")
}
}
5. Showcase error
///Access was denied by user
case accessIsNotAuthorized
ViewModel API
public protocol ILocationManagerViewModel: ObservableObject{
/// List of locations
@MainActor
var locations : [CLLocation] { get }
/// Start streaming locations
func start() async throws
/// Stop streaming locations
func stop()
}
SwiftUI example of using package
if you are using the simulator don’t forget to simulate locations
Documentation(API)
- You need to have Xcode 13 installed in order to have access to Documentation Compiler (DocC)
- Go to Product > Build Documentation or ⌃⇧⌘ D
