When a UISwitch changes to "on," a network request is performed, then the switch is flipped back off again.

RxSwitchFetcher.swift

import Moya
import RxCocoa
import RxSwift
import UIKit

func bindSwitchToTeamFetch(_ aSwitch: UISwitch) {
    let teamsRequest = observeAllTeams()
    aSwitch
        .rx
        .isOn // an Observable mirror of UISwitch.isOn
        .filter { $0 == true }
        .do(onNext: { _ in
            aSwitch.isEnabled = false
        })
        .flatMap { _ in
            return teamsRequest
        }
        .do(onNext: { [weak self] teams in
            self?.reload(with: teams)
            aSwitch.isEnabled = true
        })
        .map { _ in return false }
        .bind(to: aSwitch.rx.isOn)
        .disposed(by: self.disposeBag)
}

func observeAllTeams() -> Observable<[Team]> {
    return self.apiProvider
        .request(.allTeams)
        .asObservable()
        .mapModel(model: Team.self, errorModel: APIError.self)
        .toArray()
        .catchError { [weak self] error in
            self?.handleSwitchError(error)
            return .just([])
    }
}