Я пытаюсь создать приложение, чтобы показать список вещей, которые можно съесть вокруг пользователя, но я заметил, что при первом запуске приложения список не отображается, потому что пользователь может только нажать разрешить местоположение после функция didfinishlaunchingwithoptions в AppDelegate завершена. Мое приложение использует SwiftUI, API yelp и мойя. Я перепробовал много вещей, которые не работали. Кто-нибудь может мне с этим помочь? вот мой код:
AppDelegate.swift
import UIKit
import CoreData
import Moya
import Alamofire
import AlamofireImage
import Foundation
import CoreLocation
@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
var theViewModels = [RestrauntListViewModel]()
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
// Override point for customization after application launch.
let dataSource = DataSource()
loadBusinesses()
print("this is the view models in appDelegate: \(theViewModels)")
return true
}
func loadBusinesses () {
let contentView = ContentView()
let service = MoyaProvider<YelpService.BusinessProvider>()
let jsonDecoder = JSONDecoder()
let locationServices = LocationService()
let lat = locationServices.setup(latOrLong: "lat")
let long = locationServices.setup(latOrLong: "long")
locationServices.lat = lat
locationServices.long = long
let restrauntView = RestrauntView()
let appDelegate = AppDelegate()
if CLLocationManager.locationServicesEnabled() {
switch CLLocationManager.authorizationStatus() {
case .notDetermined, .restricted, .denied:
print("No access")
contentView.tapToDecideText = "Please allow us to use your location in settings so that we can show you restraunts near by. Once you have let us use your location please restart the application."
case .authorizedAlways, .authorizedWhenInUse:
print("Access")
service.request(.search(lat: lat, long: long)) { (result) in
switch result{
case.success(let response):
let root = try? jsonDecoder.decode(Root.self, from: response.data)
let viewModels = root?.businesses.compactMap(RestrauntListViewModel.init)
let dataSource = DataSource()
dataSource.arrayOfImages.removeAll()
for image in viewModels! {
Alamofire.request(image.imageURL).responseImage { response in
if let image = response.result.value {
print("image downloadedline 59 appdelegate")
dataSource.arrayOfImages.append(image)
print(dataSource.arrayOfImages)
} else {
print("ERROR: image does not = response.result.value")
}
}
}
self.theViewModels = (root?.businesses.compactMap(RestrauntListViewModel.init))!
print(" restrauntView.theViewModels is here \(restrauntView.theViewModels)")
print("the constant theViewModels in the appdelegate has \(appDelegate.theViewModels.count) values")
case .failure(let error):
print("Error: \(error)")
}
}
@unknown default:
break
}
} else {
print("Location services are not enabled")
}
}
// MARK: UISceneSession Lifecycle
func application(_ application: UIApplication, configurationForConnecting connectingSceneSession: UISceneSession, options: UIScene.ConnectionOptions) -> UISceneConfiguration {
// Called when a new scene session is being created.
// Use this method to select a configuration to create the new scene with.
return UISceneConfiguration(name: "Default Configuration", sessionRole: connectingSceneSession.role)
}
func application(_ application: UIApplication, didDiscardSceneSessions sceneSessions: Set<UISceneSession>) {
// Called when the user discards a scene session.
// If any sessions were discarded while the application was not running, this will be called shortly after application:didFinishLaunchingWithOptions.
// Use this method to release any resources that were specific to the discarded scenes, as they will not return.
}
// MARK: - Core Data stack
lazy var persistentContainer: NSPersistentContainer = {
/*
The persistent container for the application. This implementation
creates and returns a container, having loaded the store for the
application to it. This property is optional since there are legitimate
error conditions that could cause the creation of the store to fail.
*/
let container = NSPersistentContainer(name: "Actrual_Food_Circle")
container.loadPersistentStores(completionHandler: { (storeDescription, error) in
if let error = error as NSError? {
// Replace this implementation with code to handle the error appropriately.
// fatalError() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
/*
Typical reasons for an error here include:
* The parent directory does not exist, cannot be created, or disallows writing.
* The persistent store is not accessible, due to permissions or data protection when the device is locked.
* The device is out of space.
* The store could not be migrated to the current model version.
Check the error message to determine what the actual problem was.
*/
fatalError("Unresolved error \(error), \(error.userInfo)")
}
})
return container
}()
// MARK: - Core Data Saving support
func saveContext () {
let context = persistentContainer.viewContext
if context.hasChanges {
do {
try context.save()
} catch {
// Replace this implementation with code to handle the error appropriately.
// fatalError() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
let nserror = error as NSError
fatalError("Unresolved error \(nserror), \(nserror.userInfo)")
}
}
}
}
RestrauntView.swift
import SwiftUI
import MapKit
import CoreLocation
struct RestrauntView: View {
let locationManager = CLLocationManager()
@State var dataSource = DataSource()
let appDelegate = UIApplication.shared.delegate as? AppDelegate
var theViewModels = [RestrauntListViewModel]()
lazy var viewModelsCountedUnder1 = self.theViewModels.count - 1
var body: some View {
List(appDelegate!.theViewModels) { viewModel in
ListCellView(viewModel: viewModel)
}
}
init() {
self.locationManager.requestWhenInUseAuthorization()
self.locationManager.startUpdatingLocation()
print(self.locationManager.location?.coordinate ?? 11111111);
}
}
struct RestrauntView_Previews: PreviewProvider {
static var previews: some View {
RestrauntView()
}
}
PS: мой listCellView просто собирает небольшое представление ячейки, поэтому я подумал, что для экономии места я бы не стал его размещать здесь. Спасибо:)