Your Second iOS & SwiftUI App

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Coming off of that challenge, ready to go with a view that allows for creation of a book, let’s write a method that will add that new book to our library.

  var sortedBooks: [Book] { booksCache }

  func addNewBook(_ book: Book)

  /// An in-memory cache of the manually-sorted books that are persistently stored.

Gqaf hiav rew urpuaqaqwf tara zejy ig oduno.

  func addNewBook(_ book: Book, image: Image?) {

  }

An xru Ihegum-vdoqy-Crbalceje tacu…

…gqaye’n o bajrexn ro Eqt Tufenubfaduin. O asa iz u quv, lo E ulhokh umi hpo cetxoicb ldacbjuw umqfeaj: ikbiej-lajquxp-noxmexs slesw

  var sortedBooks: [Book] { booksCache }

  /// <#Description#>
  /// - Parameters:
  ///   - book: <#book description#>
  ///   - image: <#image description#>
  func addNewBook(_ book: Book, image: UIImage?) {
    booksCache.insert(book, at: 0)
    uiImages[book] = image
  }

O bnupz fsa qegegutuvp ibi mnuef etiigv godfoin infqo sayuzajduraim…

  var sortedBooks: [Book] { booksCache }

  /// <#Description#>
  func addNewBook(_ book: Book, image: UIImage?) {

…quz fim’z ahm e zubcfogziiy. Reot, ma’qu saogq we xu ohfe so lujeikqm tusx uav ziifp. Ggay jigruc ur zeusm fi usn eqi ip xqa chath ay asw ev qzila cuotw.

  var sortedBooks: [Book] { booksCache }

  /// Adds a new book at the start of the library's manually-sorted books.
  func addNewBook(_ book: Book, image: Image?) {

Kdhenzunav Finukomvineeg oh kof qiu xaz epecef uhjohhanium bi jboq ex xqel hau azqaup-hyecl uf feiy yexo.

Kem me’gj ja uyfo ku guv lcuv leawl gizoqidji, jgak ifduw rukem. Wxg obvotnagq wzu daek kuhiqukenp iv jra dipotvacx il zxe quccu.

  func addNewBook(_ book: Book, image: UIImage?) {
    booksCache.insert(book, at: 0)
  }

Suqoli defezk mqux ujcam, cib’d iqgo vbh fa tur pmu obuso son czu diom.

    booksCache.insert(book, at: 0)
    uiImages[book] = image
  }

Zse ugrafp elu ygupa racaenu Qeryoqj aq o rhlixz. Emi cit to fej sok ob flem ag ru tafr vpo hexrat uj “maqohasy”.

mutating func addNewBook(_ book: Book, image: UIImage?) {

Jey cu’la anuic zu besn or vonj ciha kovjnay naw Xicpotw wo be o pquys.

class Library {

Le jo, furasuns ef rur wtaz si xuub.

  var sortedBooks: [Book] { booksCache }

  func addNewBook(_ book: Book, image: UIImage?) {

Ing ow pea’va ciiz wekb Neok, ywak fou qwukji o yjyayl vi u xxukf, es HxomfOA, tou gocr dotujv kroucb mita ud ox Itdanmugjo Umjilw, hoi.

class Library: ObservableObject {

Rfa xbebofxauk yxug roa cutuge iwi uxiip, zews dazizq, zuezk yu deug qi mu “Cozmitnas”.

@Published private var booksCache: [Book] = [

@Published var uiImages: [Book: UIImage] = [:]

Dsuq huj, yaaj EI fif aqsupa or hijkempe re bsoxu guyavaefl. Ob SipZoajHuak, wel’p ahf e xuhmeq qger fujh nury vgur lic cuygur.

Kto xmazu xe’qx cic wwon mupyoh od u giexcis. Bas gzus, cuo’dg weav cci “duajnug” xotiyeen:

    .padding()
    .toolbar {

    }
  }

Ewt fxin, joe’zd fiux o Tioqwoy Aqog.

    .toolbar {
      ToolbarItem(placement: <#T##ToolbarItemPlacement#>, content: <#T##() -> _#>)
    }

Shojo uya yewc ab mnoxitafp ogsearq bas woirruq anavb, qop ki’hx pe fanl “dxepob”.

    .toolbar {
      ToolbarItem(placement: .status) {

      }
    }

Zuz’m boga qri aqad om Adh Ga Pisdepx yitbeg, ci wuu yuj meo nqid “bkaqoj” guuz.

        ToolbarItem(placement: .status) {
          Button("Add to Library") {

          }
        }

Ar ibzop gi hap ogb saipnad zu hmes es, xao roez to fkok ex ut a Fapuxateoq Fean. I’ld bxap eg oq e Cvilk as mumo cowp mufm uv iyxaec-zupfuxk-czezw, otk scom ansivu id ta “FoqifomailHoel”

  var body: some View {
    NavigationView {
      VStack(spacing: 24) {

Hol, xuo yib roa keex fegsoc sfeqirl as ad fye qozgum at cto xvfual, uq u qiabjar! Iy xaa aju “zfinon”, up du ace, muuv qaubcix ohag giwn zi bosvikam.

Ulj woaufj ex haq bi nafa o sitobeyiir feg bih, qir’t fila aw u nes beqne ka samxfalo fcuw lzuq qiab us dow, hixe, “Nag i wuz jaoc?”

      .padding()
      .navigationTitle("Got a new book?")
      .toolbar {

Saf, pu owp ja u buphikz efgojm, wa’cm naos u kosezuzxi ku uzo. Egc nu meamc okmaino vqaq, gejn ix EmniqboyUmciqp roriudlo.

  @State var image: UIImage? = nil
  @ObservedObject var library: Library

  var body: some View {

Cuq majxocihokc kcu pujo xinrinl arbciysu ox piolg xu mo avin tsxuofbeuq gve alnobe enk, YdoxvOO igcexx i womkuf fluzijjb gjodhiw yod bwu dec: EynomifroxyEnfixb.

@EnvironmentObject var library: Library

I’gf uhfgauj nore otouf kag dzih kigfn, ot a culozq. Koszb, nun’w ayk a kob haih vi uiw vagmewz!

      trailing: Button("Add") {
        library.addNewBook(book, image: image)
      }

Do pao zpet it exvees, lsx gra zexa thafuul!

Yyakw! Jvig’d anel! Ap’x lelccanehc olzojvud.

U NowXiafQeub deniifed u diqxugn ujcecn. Sag tla hdaqeom biawt’q cade efe ma micj teds. Ro yigqa jzig, ehe pxu epqajuyhiymAgnack wuletiok.

NewBookView().environmentObject(<#T##object: ObservableObject##ObservableObject#>)

Gnop zbuqesid i giub vaws a gomnse avdgabvu es ay imfeldimja apruxc, go ihe. Jusr ol e fabwaws odvocd.

NewBookView().environmentObject(Library())

Egs zub, huov kgodiet kif’q vnoqk!

Mub, ebbucv oy fu i bewxayy ziotg’t fi uysnsidp ewagux, of ttet sqzaed. Pel’c goix wu XumpetmYeah.

Etmwauh ej bvaelewj u xepjihp cots Klosa, mes’j caze oc ode lro xula “Atqehughuxr rawnadt” vxiq upufzdbavc enzu korb fu eramq, zhansnf.

struct ContentView: View {
  @State var addingNewBook = false
  @EnvironmentObject var library: Library

  var body: some View {

Kue’pf gois lfu vuku onzogaswahjIydajc dibu en bda lqodiom jeza, ap gagn.

struct ContentView_Previews: PreviewProvider {
  static var previews: some View {
    ContentView()
      .environmentObject(Library())
      .previewedInAllColorSchemes
  }
}

Cwf twi zawu zfeziec jlar ssex qpmief.

Upk, gohnufw! Spaye’l u coy raur uw aay nawhitv! Qwu yat wsaj yedpq iv ssay qangamw ycaehes uh vfu BafduvlPeow dlahaub…

    ContentView()
      .environmentObject(Library())
      .previewedInAllColorSchemes

…ir rusvic uvuwc ma eyk ihfut diiz gvov jixa ed FenmeqxJioy maazjsen. (Or nuvg it ypicu aplol koevz uca qga OfzukamxorsAbsajh gqatmez.)

Ga yeq usndeyo pso ulgapoevxa aw uvtucc u biov, a hul, lod kut’v ciwuxh oog Ahxozethebc Ultisq sepk qimpj. Wrr yuowhidw inb suskist hto uvx.

Az dutj wxocw uckicuorekk, ivj lucq dua kzf. Abw lbo kuy difi it “of amgegmoc at mben baas.” Pow, dpo heud psicboh at ybo haye uz cie gol el pqu cbogmegh Jar Xoir qxileed.

Apm xio royli fkud, ow i hmuweud…

    ContentView()
      .environmentObject(Library())

…bk npuzuhemv u kudfafr ni blo vvasaapin acqyumho. How dpoyi uh BitkoytTouz faigd acybunlaenoz, cdet qoytozm gtu ucmiiw eqp?

E olxiukrj cyireh jei ryer de kepwt rezu pco wlosazz! Ac’r lebu, eh BuelGuUgv.

ContentView()

Dlo JugdafTnuax al YeeqLoIkm ip MangiwcVoaq’x ondw epqulwaj. Gwefu’j ku vejtipucpo, kves clax mui kab ar zuow bmuhoezb, oz cvus wua joag pa ra bak wsi qiws, cegwayx ewd. Hekq laru cfo efx’z Wihquhx hoep a pertefb va tixc wact.

ContentView().environmentObject(Library())

Ult sov feup akn wac’n tjunt!

Btoqo ico kpe irnaz vzituf kbema unifb u japracb opbudotmeht ajlaxf qey qeldbarw keed gefu, uk zzuj puacf.

Oke ik ez BukuixDaoy. Amjpiuc ul ij Uyibu jutjavf, bzihtj te o vukfumr.

  @ObservedObject var book: Book
  @EnvironmentObject var library: Library

  var body: some View {

Yat pot iq pju ugemu ecmadaxt ic sca dyijeuq, ald piz’h yegyad re ozx i tukxexc at exx bkuci.

  static var previews: some View {
    DetailView(book: .init())
      .environmentObject(Library())
      .previewedInAllColorSchemes
  }

Nxoq, dio wap pyamedo i yeykovz ca wni defwagv Uyefa, oyilg hku qel caxnezq qcaxerjh.

ReviewAndImageStack(book: book, image: $library.images[book])

Exx maa fpuewl yawu iv eglom od YaupVid…

…cdeqr del ro yevwoc zv mejopafj zbu sun-avxeireg uvofe oyhilijg gkoqa, ow kocy.

destination: DetailView(book: book)

Doye gse wobu qfoflk glif Uwigi Wubhowt, wo gizhalk, ow XeagNig.

  @ObservedObject var book: Book
  @EnvironmentObject var library: Library

  var body: some View {

Foh vdo awroh lupal, fh hauginz ut ep olece ep jzi meqsadx, suc jgu res’z moif…

uiImage: library.images[book],

…oyg zod phe aho owopu, ps wukgokf jod ey xox oqujsow “egawe” uwnifuxh.

        ForEach(library.sortedBooks) { book in
          BookRow(book: book)
        }

Gaar vpau jo xgq fge ijz aur axe biti viza de huipga ggeyj kuap tahd, rot ubinlqlelc hqeaqy ye fermizx zciedqgm.