网络可达性

import Reachability

if Reachability.shared.currentPath.isReachable {
    print("We are online")
} else {
    print("No internet")
}

import SwiftUI
import Reachability

struct SomeView: View {
    @ObservedObject var reachability = Reachability.shared

    var body: some View {
        if reachability.currentPath.isReachable {
            // Show some data loaded from the internet
        } else {
            Text("No internet connection")
        }
    }
}

import Reachability

var subscriptions = Set<AnyCancellable>()

Reachability.shared.publisher
    .sink { path in
        if path.isReachable {
            print("We are online")
        } else {
            print("No internet")
        }
    }
    .store(in: &subscriptions)

import Reachability

Task {
    for await path in Reachability.shared.stream {
        if path.isReachable {
            print("We are online")
        } else {
            print("No internet")
        }
    }
}