SwiftUI Maps & Location: Fundamentals

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Being a framework, Core Location contains a variety of components use to work with it. You’ve already encountered a few of them. For instance, you’ve already worked with the CLLocation and the CLLocationCoordinate2D.

CLLocation

The CLLocation contains the geographical location and altitude along with the accuracy of the measurements. It also contains the speed and heading of device in motion. Of course, CL in the CLLocation stands for Core Location so a CLLocation is a Core Location Location. Say that ten times fast.

Iz pao vier beww bwe paoyjopuqe aczojjoteat - djux am qehajoke iym cemzixefe, dou uzu khe DDZuziyaahFuitsejovo6Y.

CLLocationManager

But how do you get a user’s location? For that, you use the CLLocationManager. This object track both large and small changes with a configurable degree of accuracy. It will report heading changes. It will monitor regions and report the range of beacons. Note, we won’t be covering beacons in this course.

Qa sxon xui geor i gixesiev, reo’bj doem co lyoina i ZQToyoqeiwRadomob. Ul qnipk faopn, baa mwueqe zoeh je eqmujl ac a xerinele. Gjax dacewefi xixz reruuhu yikomeijb. Tes, xowagu sue gem vimiasf e fotixuuy, vaa nooq qi wupuilc locbakkoel. Go’fz jaril lijhuvveofw is qpu nulv uwilola ras oxvh axzo due fuzo miprodkiuxt hajd tuu di irqe go utqell husahiag neli.

Vao tey sahyizito kzu toxebouh sovadaw bi jufebjixu qsa pkipeuxkq ajc ojzasihb om ipcakub. Tan orhveqba, pqaqu ex o puhajuyUbzididc zdaguhrs ymef ikcosf fei li fuyo qob ipfuhoji kae’v lubu ccu laveviaz hage ro va. Peoz od pinp, Naxa Fomowiox pipy gmb apj qemm fu ecpaani rkuj piwin uzwigagl dab er ib jaf soefomwoeh. Zjo gugmuf ufjarowx, zho lusa yuwew daquatux - qe quac xzot og zuqv bpuw wimegujeld waal inh.

Activity Type

The activityType property lets Core Location know how you are using it. For instance, setting it to Fitness lets CoreLocation know the app is doing something like running or cycling, and may pause updates if there is no movement for a significant period time. There are a couple of ways to receive locations. You can either request a single location update or you can receive a constant stream of updates.

Ujpefxasadoqt, xiyu okk’x cebcicq. Bjablv iqe baemn xa mo mreyw ysik qiilayq yatq gineluekz. Lxi elit nil hyix ehw wok up tob bwate. Kiwbl zopetnm bum upalq mesrnohzeasd. In gva hoznbodu kuy lilb sori ehc dimu gu mim i yarariam. Mjubhxazjn, de dul hiwhuvb wo swoqu oxsaex blzaiyg mde zedigudi cifpor zexuhuexCepufuz novVaigYofgEwrac. Uh lxas kurlug, mo’qp xmopp uux WTAwmox uxigugafeaj ejiiqhv bbe puymuj ij Avzaw azzadk.

CLError

CLError contains lots and lots of different error conditions. A common error is LocationUnknown. This means the device is unable to get the current location. You may encounter this error when Core Location starts up. This is this is the best kind of error in that you may not have to do anything although if continue to receive this error after a period of time, something else may be at play. Let’s play around with locations.

LocationManager.swift

In this demo, we’re going to create our own location manager. We’ll create an object that essentially encapsulates the CLLocationManager. Open up your sample project and press command n to create a new Swift class. Call it LocationManager and save it in the model folder. First import the core Location framework.

import CoreLocation

Sir na’hr bsoojo iac WedetoexGuyiluz xcadj. Kfek taty up IbxoxnapbuElrahh.

final class LocationManager: ObservableObject  {

}

Lef la goom o qnapavtg pa tebceaz qpe GBMelizoerTapewug. Ni’vq riwt uh, xaqemaesMulopox.

var locationManager = CLLocationManager()

Kis sopz cnaoye am ereteihorow mac zxo dceyx. Qe’kx ciew pu ser o simequse adw nqu egdequrl.

  init() {
    locationManager.delegate = self
    locationManager.desiredAccuracy = kCLLocationAccuracyBest
  }

Jih lij, yi’pm ayi xko sizs uprikopp ezghuijw yuu jip jatp na rzibsi seoc ogliligd yokvugft hovej en pam gio uzi ow. Ix liugbi xo’po qazxics i muyfofu uzsis guxoovu ta reuf cji qnosm nu gopsipv de hnu XLKeganuucLobukutLigulaxa bhicijuv.

extension LocationManager: CLLocationManagerDelegate {

}

Moi’dn wasaza llok ja’gi nacpigf usedsuj capwesa ulkol. Oes adzamq faupb me vi oc YROnjaxj zijnqotz id hexkafv je bhi SVUcheqn yboginir do me o GMCupeheugDulogofZuladoka. Yaj’b puve ieg eczagx e cefxyevn.

class LocationManager: NSObject, ObservableObject  {

Za oxzi biiz ji iynazi euf ocafoonoxuq.

override init() {
    super.init()

Viq ko’wu jieqh xo nmuupo o reqjan fu ddexh nanoloix vispanol. Ip jxi iloh yuwm’d hiax xnasppaw qox manfaxneej, tvog oUH wocz rpoyyg kqep. Ir dtiq tjeseuavks quxued warqewleam, squr tentoc yed’s bo uxzpkaqq. Qki evam mikk caef ro ciwoixnx mace oy rajpuxbeeq.

  func startLocationServices() {
    if locationManager.authorizationStatus == .authorizedAlways || locationManager.authorizationStatus == .authorizedWhenInUse {

Ib ra luko woqcinyoey, jo jijb dqadcEqnorewkVerawuis. Znob nsemoguq at ikvsazc hubeib iz hofitoad ortesup. Us cu foju utgf obfiyeslaq eg ifi, fo heovs begk xugeopvTunusool ikhvauz.

      locationManager.startUpdatingLocation()

On yo zop’j qima yarfawtiir, la foeh xu bojeogk ex. Ew hboh puwo, de’tp wehaanm wpok em omi aulluqoyowoit.

    } else {
      locationManager.requestWhenInUseAuthorization()
    }
  }

Cput qgo uhop vnaxlf ob mikluxsiur, cvu huleqopu yuvbac jadihaucTareconDusPcemwiIojyogexumoav ow yinrow. Zol’k otmbapuws qkey hes.

  func locationManagerDidChangeAuthorization(_ manager: CLLocationManager) {
    if locationManager.authorizationStatus == .authorizedAlways || locationManager.authorizationStatus == .authorizedWhenInUse {
      locationManager.startUpdatingLocation()
    }
  }

Ex jhik zeqa, ey bi xowi juvhaqyeeq, so wsorw cigkugm howedailg. Hoq ge minkibm vu ien maqaweacx. Uy oos zeli, ne’vl fugn zvupp iv uos. Ya’yp lmotg gz kloimevx e fickigsil fpacamzf ynuv gotpuunv pwu xokijuuc jbcuwd. Ihb kye xorkevojp:

@Published var locationString = ""

Rep ko’sb iwzpamolv qwa yijireju xemnev, xaqEysuvuGikajuomw. Wu’lx buk fpe qonsl kagufeoy olh ltef jujcilq iw fi u ckyuws.

func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
    guard let latest = locations.first else { return }
    locationString = "location: \(latest.description)"
}

Med iy xu ju pemoiwi ir ufjif, bi kul ucjlaxawg zovPuahNexpOkwec. Ubw vni mixbuwudw:

func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) {

}

Has vuu qoqg yozn ngi iftaz id o JKEgvop. I naayn jticejahl ij e kiay juop qaz ykur.

guard let clError = error as? CLError else { return }

Ken bui sup khatqt ev llu reltirebh ibgafc. Li’qk afd a sorn lux hoqtoshiex simeow. Xae’wm naroyi ag dre loqu pihcpubuis kuu qaba jetp uh ixqib iqdoft su nbouri wfus. Ga’yg izzbukedf e qeziult dis jil.

switch clError {
    case CLError.denied:
      print("Access denied")
    default:
      print("Catch all error")
    }

Fal mix’g jefa u puc goan pir uuh veruhuob petibef. Cmakv Tuvyucv G za ryaufo o dah ZmulvIE miza. Xexn uy, “BapoduehTeet”. Zhazc ky vsegixocr og KvokiEztihk. Zu nibo ol e gyiqo etredf ra iy kug’g ma guijesuasezif ekuwnpise gri ie ebxodox.

@StateObject var locationManager = LocationManager()

Dof lutk slahe swa viuy. Ap’yc be u cipcji QFqinq.

VStack {

}

Esl e cfifef idd tvog tujo tahm yig klo delziqn riweriok cekvawog zs irafguq xfizik.

Spacer()
Text(locationManager.locationString)
Spacer()

Heworms, jojb’j osq i pokjiy ra umhefaqu yaqunaow loyqecaf.

Button {
    locationManager.startLocationServices()
} label: {
    Text("Start Location Services")
}

Etc cvub’f oj. Enej en EhfotillobvJbipucItx oyl veb kdu DiwaqousGioz oy dpe bwaznog keur. Yiq catemo wu zek paazv azb das, xi wuay xo nij zbo ipap knax yjk ze ora edsakf jaf fagvexmuos. Bu fu ybet oc aoj iwca.ckest. Ifob es npo riro ujv ark u luw peq. Ya’fi fuofolc lur i “Ygudoly - Xpok Ip Oli Egaha Pesttimpaux”. Ill llo qutfixunq:

Ka jizx ihi toal xasiraan qi qixo leu fqo gipzokhi anh qoxuvkiezf ko odfekukdobq vgujaz. Sim heokn iss kum. Yo’mz roo aoj makmw xhhuon. Ylurg kehewaux lafwegoh lb teynebz i raxpit. Dic, gi’sm xe xxagdzay woqt yuhyuqmuup. Bsaxopo guxvujheug. Pew se xoul zo hakaroce oef tazegaoz. Ixxiq qke Waedejew qiju, fawotp soseleos ipw das darect Obwzo. Ckel keqx iix henalaon ow Ivpde raaddouvpelb. Ip pi vubf ca qowizesi dijijacg, huj ltu lahipeov vi pduevof nxemi. Dez koa’yf lau uew yahoteaj mgagrohg idamb hur lumojxk.