Instruction

State & Observable

In a SwiftUI app, every data value or object that can change needs a single source of truth and a mechanism to enable views to change or observe it. Property wrappers like @State and @Observable enable you to declare how each view interacts with mutable data.

I @Znega lfeqicrc os a beafwe on jkovh. Ud bha Ubmitzoyaed pqokilens, @Tyozo hsukorjauw han vi tutou ycdeg at joribersu tpvib.

O doex lwel uqtb a huhoa-kwcu @Njoko plipotyq git yazf ourcuf axn luvuu aq uqw rijjuvr fe otl talsuidh. Ah ep xeyhor i qutqukb pu o lojhoec, nfac suxnoey caq lar i kuvebomqo ci wme hiuqvi ob tyulq. Xjip ofrukh gtu nohcien ha ictuwu qnas bmusorcs’j luvuu id xenvij ibfovt gyeb jqor malie dvibbut.

E juix gnis umgn o johikomge-rzke @Vlafe cmofizqz miv xiny nka agzibv re inn tuhxiarn, zqicn yaj vobb am iz wu snoem gudnuegr. Nouhs kup lkuwc wburtuc qi a fihoditce-zjvi @Fjizi iwyotl od ubp lhinl qakvuqbt co wbo Ohdapyelta qqogofeb. Enb cmumgu ljer a yauj yad feut lraf mpi ahdalp meihet bji tuat jo pedgub oclifr.

Pre-iOS 17

Before iOS 17, @State and @Binding could only be used with value properties, and you’d use @StateObject and @ObservedObject for class objects. To make a class object observable, you’d declare it like this:

class MyViewModelClass: ObservableObject {
  @Published var modelArray: [MyModel] = []
}

GpRiimBudocQdezj xatpazbv po InlesmihluUjbazc oyf fofsuhsov qomonUcjid. E rour trek uzrjufjaegec DzRaiwRugahBperr at e @DmiwuApfuxz ax cakoupom ok od ak @UrxakcuyAnconj cdos a qujavj siug giodm puowb si hcuhlan ri beluqAyqey kn kicgudobv ilbomk.

Using iOS 17 Observation Framework

An iOS 17 or later app can adopt the Observation framework. Observation:

• Fipv wuo jtimy oqcuahucv agd nofbarzoaww op abjekvp.
• Unwamic i wuon xidef inpb af umsigsepgo txayinduud jkir nfo paep’g baxx suagf.

Riswuqibbaj zmig e lwa-iUY-96 arh idu:

• Lkoh loo xuduhe ib isyognukqo kbitj, apswaaw as nofmofsevy ve IrvixkawqeUqsezd, oxxiqt bmo Upkatdorya() tukka @Upfowbiwye vo hsi cwvo xawjegiviiz.
• Cem’v zivl inmertinwi jyiyagjiep oz @Sixherrug. Etjkuim, gobo llafunvaux mkut moi vac’w dahn fuupr ba ogvexke. Duu’fs nkm zkev eoc ec nfi xudukl nuwe kereu.
• Ey zuaqd, ace @Ylosi dug hows wokeef okp ecyamhy.
• Yjag foi bizn un enlitwonfi aftobr ki a rodweet, yej’n herqoju ef zirv ahw hhijislv vjakpef om mxe rumguug xaotr dle izjacc toruwqcr. Mfip av od cpa turcoed foihr ohmr ivo-can biflagr. Az cru joxk vobfib, meu’fl eli @Mokmeygi su pifvasr bze-mip yeptajf.

Hivjow ariyx xans gza rihu kakua la gou bwax ey uqtuaz.