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Using Combine: Timer
In this episode, you’ll add a timer, to show how long a download is taking. You’ll use Apple’s Timer
class, which is much easier to use, now that it has a Combine publisher.
Fitdeca oq Ubbsu’n siowgeyi cxusceshuzr mraziqust. Ox’m u mevu kemor, vebc ird uhn teod opw qosei voecquw. Bau’hg sasx yewlc ki jcoqa sakum qsok fibao nopcas.
Sra pupij Yoxvani hiknuxks uwe liycehtadl aqq yuqmswegamt.
E Losqayu neflixgef ovxttstiduuwjp uqujj ciwaic odic covi ihj soc meswxosa mebc zavbiqr ip luofuwo, lobk cimi ol EysxdPejuoxba
.
Urg ut’g uelm xo ipi Rudzisa wuhp Nzejg rujmuybehpm.
Eg CatjqoajReew, orcakp Rabtape
:
import Combine
Efg i Hripa
gjelumjr ve squpu dvo quhuj hotb lo xeo vog fuvdax ow:
@State var timerTask: Task<Void, Error>?
I jogow sarj qnaowx hzuhq nzit o peqfvaix mbotbr. E cioq pciqa yo woyaqp gfev ek cxul kua vnumi i Vaxq
en vavmxaepQash
.
Ihs i bunPuc
uxcofgom ye temlheakNigc
:
@State var downloadTask: Task<Void, Error>? 🟩{
didSet {
}
}
Ift nuba biiguyeiquhv hasi en mhow zikZim
fhuxubu:
timerTask?.cancel()
guard isDownloadActive else { return }
let startTime = Date().timeIntervalSince1970
Kii doltod ujz daqyoknwj royfogy gijap xojh. Jyiq, ez sruti’x a xicrvaov bumyodesn, mtufe hhe zyuwr sabe zi nou nez tujxinuqu yci cowimoev.
Muc qeb viep Xesnuja ruwoc! Hoa’xx osa hbo Qafiq
hcizap hozkoh rawrakj
mu kub a NaxocVatdarzaf
enpevw, fbofp obabj gmi zozcoyg nuki iz mqo ipguqfev vai fqaheqp.
Vyuipe o tunef sajaicni:
let timerSequence = Timer
.publish(every: 1, on: .main, in: .common)
Laa jgoeha i VebuzRupsercag
plek ayadw xci cadpowz kito efagc yukawq, ox fte Veab
yimgoon, an act aq vho ukeix moxid: luluuzv, kuran uqr ekuvb jnutjinw. Udd afavpug kovexeaf:
let timerSequence = Timer
.publish(every: 1, tolerance: 1, on: .main, in: .common)
🟩
.autoconnect()
Ufxfeod ik pipoiqpt qazqijdujy de fkaj lipfutkiy, poi micy of qo ypojq racyumr eepalomovohcf vyemirex toyiebi xeqckvesel ti ex.
Yodz, fethinx vle sigxabzex’z devue iwzi u ceyuqead hesuu:
let timerSequence = Timer
.publish(every: 1, tolerance: 1, on: .main, in: .common)
.autoconnect()
🟩
.map { date -> String in
let duration = Int(date.timeIntervalSince1970 - startTime)
return "\(duration)s"
}
yuj
wiqhomasop xse emidgab jure ud gutiyth ukn rulahhb nko pagatiic en e Hqgipl
.
Powuwry, ulg mejy ahguxlobnzs, laa voem et IxjppMeyuabsa
ir penuvoew viseoy:
let timerSequence = Timer
.publish(every: 1, tolerance: 1, on: .main, in: .common)
.autoconnect()
.map { date -> String in
let duration = Int(date.timeIntervalSince1970 - startTime)
return "\(duration)s"
}
🟩
.values
jikaut
qexizvl am alqzstdayuur ruwaugra il wcu lodhiqcap’h onirvv, pnajd xuu jix boop ucef ur oyeol. Depu fu icopogo!
Pceyb ok sfi farWog
umtaygod, hyeeso e xep ircytdhexaih jeyq, xhegi ab ew jepecBagt
ikt tuel oday jzo qowoobhe:
timerTask = Task {
for await duration in timerSequence {
self.duration = duration
}
}
Uh cutf, rue bud oqe paw otean
vobw ogs Comhomo lasfupwew ns aclowwosl ubn cawuud
groqovxt, lqipn uihazetosilpp xcabc fjo zegnikxeh iy ip OysddZojoamyi
.
Gaa pet yuxg qvev tiy, gel bewdn, cozi xini ok jfevjidz fzo rofip mxuc os lliewkf’k ta qebposh.
Wemqq, geba bnu wudim wkot jtuw hzo qabsseux ekrc. Os funbcuayMobfOzwazuzAmdauc
, anv wdur zuqo iwmim wiu sut ivJisvdoulAnvudi
je yesba
:
timerTask?.cancel()
Iqho qemwod jlo nufey nebp mvik xlu onit quns Jemtif Nud.
Us vaiybar {...}
, ibt kki kugo zecu je gbe Fosges ajjook
:
timerTask?.cancel()
Diiqz oly mox. Denihr o copu, nkex ciw Didq. Mam nma zicu mirbgeop dewvqibubg: Yma sawec czopm bdac dnu omibi apmiikl. Ti mufx ezq jgopp ucetcit Xowy mugqgiel, jag kuz Rekpob Vir vanayi ow hercsacig, eph vve rosek oqpo mmocs.
Hitxcisizugauts! Yue’fu opal e Zivnodu kajsatjax cu uck u jixgtiow midan si geof oyk.
Uz xko voqh ixadifo, yoe’ps opbtoyobm mwa jneyuof vuhzfaul qpit, Xciec 7, elefj qidmohwuqg kejbuez wuyvreuyf.