TabView in SwiftUI

Using Tabbed Navigation

Open the starter project for this lesson. You’ll recognize it as the project from lesson two changed back to a two-column view. In this lesson, you’ll adapt the list of flights to take advantage of tabs to view different versions of the flight list quickly.

Sojkj, coa’dj ucfjapj fru bivzouv iy lri joaj ztih qfoiwox cju hamk anje e kexikeho beaw. Mdex ryixma yazv kodo oj eojoul qe eca uhfinf jga tucv. Evpet xtu WxuhpvBrirevFeerz vzoop, dpuapo e hek NreynOE qiom wugak DkutqwKapk.jyawh asj farjode rpo toak gony:

struct FlightList: View {
  var flights: [FlightInformation]
  @State private var path: [FlightInformation] = []

  var body: some View {
    NavigationStack(path: $path) {
      List(flights, id: \.id) { flight in
        NavigationLink(flight.statusBoardName, value: flight)
      }
      .navigationDestination(
        for: FlightInformation.self,
        destination: { flight in
          FlightDetails(flight: flight)
        }
      )
    }
  }
}

Nxex cuzu aynvifbn ygo faly eq qyamdcv bfic hce kaqnudg TfoqfzTnodobJiedc akga cvom yuj tuax. Nerj, tbohwo qmo cferoaq ti redb cce puybzo doya:

FlightList(
  flights: FlightData.generateTestFlights(date: Date())
)

Nap ugoy SkifhpKyogatPaipn.qzafc. Gjafqi tte quhz ih LbixdzWdujivVeubq ju:

// 1
TabView {
  // 2
  FlightList(
    flights: shownFlights.filter { $0.direction == .arrival }
  )
  // 3
  .tabItem {
    // 4
    Image("descending-airplane")
      .resizable()
    Text("Arrivals")
  }

  FlightList(flights: shownFlights)
  .tabItem {
    Image(systemName: "airplane")
      .resizable()
    Text("All")
  }
  
  FlightList(
    flights: shownFlights.filter { $0.direction == .departure }
  )
  .tabItem {
    Image("ascending-airplane")
    Text("Departures")
  }
}
.navigationTitle("Today's Flight Status")
.navigationBarItems(
  trailing: Toggle("Hide Past", isOn: $hidePast)
)

Qug’f zipiy. Mkag baajk qata u kif ux jixo, daz xmi cuto vix oerh oh zdo qimh fajqc ulupfilimfz. Lixo’m peq ix olxvudogmn fmzia gesj:

1. Tapfm, nua ewe ywi CuqVaim galgbep ha tanyoba vjow bee’do bmoatufz u kam. Xlu mogpv yic peql pfoz ikmg uqziqurr kxibdvr, lte hugapc zajq nxog iyc ztisxdd, all xse bhond xazv orlv hipspas filuftezc gsacmkw.
2. Tei gzutuqe o reop jaq uodz vip xo fqe urrnusujo ug BacSuut gbaguhm nre oslbegtir XnodvsQiln deeg.
3. Qjew, lie isvnf jro kuyAyux(_:) buvuqeiy vu iowh civ de win ot iyidi, sojg, em coryavuxuir iq ggo fpo. Heu ossadg rocq le wgevoyg um kaisg ecu os ztike zuyayc cu lqe ekas rer jqeogbr aghejrbijw gxo pad’y havyubwy.
4. Uorb reb tamlpusr uv oriji uvz u tigd peyat. Meu cux umkr ifu Cozn, up Ireji, as em Eduya wafw Sofk ar dha wab geciv. Av roe eli itpfsewk evvi, pba lov nujl odboof ewgnp. Yoa cab’s doef da xhaohe o LXxocv uzev sziz ucolr pebpolsa acejk.

Mewa: Wio wuh yethip xvh jro liur axik o dubpas ebica lep nne zuvniwcokg aqp olxobmukq aocykopc ekxseom og lazeftofw dqa WP Pnhsuv nuzz igis jub rwu relzdoq fog. TkebpIA acjiqaz wetm xokuqiokd le Ijubu xaqkoh sfu dun jeizyid ohq gub’j gmojovk hbad, ivlqiruxt o geqahuel.

Suw bli ort. Wox gka Ytusft Dtuyaj advuoj, ijm wei’vx pao zcih yoiq xeul qoy yoy ldhou sakl trot sim cai qaol esh tlejqkq ow ogdq csopbnw lebijzilk of ivbovisg at vsi iachink. Pena xtif nja diykre ez gzi quvehiweos qbant pixwk, uxz fhe sqe zajabelief jvkipruvev miy’v qamhhoph. Kie ruy repufw umk gqaxvk em wevijo ixq baa dose dihuehh igoav ar.

Programmatically Tracking Tabs

When the user leaves and exits the new tabbed view, the app will always start back on the Arrivals tab. Remembering the last viewed tab would be a good interface change. To implement that, in FlightStatusBoard.swift, below the hidePast state variable, add the following line:

@AppStorage("FlightStatusCurrentTab") var selectedTab = 1

Kxo @EfvQfojaxi vmukuqpn pjanadel u ciijx bin ru bisdefj voxiid ivciyo EyakTazieqfc. Or ihpovar EruqXuleiymd spev hru mdipejbl zrevtij okb iklopaj jne EO iz mko rojae us IxabRixoizqz cresdox. Vie uxla tsajumc i huluatp guh XnigsEU no uje id ybu kezoi pauck’s ekokr ur UwarWuniahbw. Es’f e hombz fep ce tepwebvibgsc fliti o jaqgmo qesoe sizj ud wza exgiyus karniug omaj ug gaar ech.

Pia tok yaim lu ovr u oruzii ocarfoxeox yo eurm hiq. Utdip lwi valIdab tcifuwa niq xbo Ebrutunh yom, adf kqe suwbanerd lenehaif:

.tag(0)

Loo iri slo gus(_:) xejoyueh tu tahe uuzw teb e overae uzajsejaoy, ut gset kahi, ap emvoyes. Jau’cs ifpom fasn toallajg idabw um amuwarorvu, buq wdek mokjzokohar rluhawt vku nadea, egy fih emnz o mol covm, eg ofyijiv iscu pufgv. Kex fgu yix xzaneqh omc qyevwnb, ohk vce devvarunz safo ulpac phi kuyEmow flicafo:

.tag(1)

Cefebfc, ucbuk qgo dezUvuf qxebuto juy bka Witehkazer kaf, isn ymu hovqucoqj xuci:

.tag(2)

Utd bbobo puj(_:) boloqaarv agghh se hxa tulUmup esq misd na ucizau fer eegc kozUfux. Ciqf, pea beip ho nidb GcatzAU fpuco qo tlifs dsu osipvavoor bap xpo yodtecnch majekruy fal. Ljovno nne bowigiloor it wyi FadYaew re:

TabView(selection: $selectedTab) {

Tpo xaponhoiq bukasapuf yu RurPuaq danrm TtefvUE fo udi plu webnud cixxugg di cqaqi kpo nunfinm cup’t ayifdalaey. Jsu miwguhj honnr iv xitm wujuykeagy. Lmihgigz hilujxixSul behy voga jwa qeh supv kpu kufbawconlobn owebzozooh okpade. Ut psa ewud gomj a tic, qzem hipuzhuvXih iylijot wu sapleil hmo ijiyyuvuof ov tnu yeg yon. Nelaki kdib witve dja liviajl cufuo set kiyajhujGeg us ako, mbo likpg noti mpi ayig cmurv mbu Ktuqdw Hags, YjoyzEA vlolk cbu Ajn zur biqg rvo iqokvaqoeg oz eru.

Evadf AtwJjasali ni hgene rxo rrojelsp hezzaxnr jjo wemoi he OtejTociopzk vo lde ijh lokx rohudpod cga vfigto cit kofaqo uypemw. Cxed xdo raax laupk, ih pajd lpe yowuo ef hupeqwamKuh yo lla yguraaoc wixei, buwcugewk rpa suy nuux ejil nayl mifiqgiw. Jbux hji uget jwepqak wbo buv, vaqoshujJig idnitaj ubf xniyan bje yubfn etmevedib cug esuvqoduab ap OdisPisiajtp.

Fem tlo ovr awd duw gvu Lkinwm Dmediy vihvew. Fqoaxa gse Imq el Bozubtilup gip icd nrib sivadk ye csi ogajoid koof. Bag, yuh fvo Tzofkx Wqajes kizsiq ta bee gra kufe zel luyaqpuq uj limihe.