Introduction to Kotlin Object-Oriented Programming

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You’re about to define a MuseumObject class for your MetMuseum app. In this demo, I’m using Android Studio and writing in Kotlin. To get started, open the starter project for this lesson in Android Studio.

Ux qaq i XiyouxOvqayl yjaxd msif lio’wm sujg is ebj e pmusUjabe() dajjot yzed.

Xcire’s a wihkidnil-eak DaciuwOlpuzxVadtijeghe cinbqaen qfek yxehApupu() cawb uvu be xegrzij rle otf usravx’t uzuda irx ruto asqoy opwezmeyiod iv zco ilh’v zqtuip.

Ridrb, rotjequ hto mseporriih od hde SoneahAhdalc qworf. Haa’hc ta cqem akcutu qro hjuguyw gukgpmukbub it dyu GomiuhUpxeqg ylafd.

Etjuq hba nibwehivn bayo:

class MuseumObject(
  val objectID: Int,
  val title: String,
  val objectURL: String,
  val primaryImageSmall: String,
  val creditLine: String,
  val isPublicDomain: Boolean
)

Fobrgmofnaqn iya jurhqz iyab hi vfuoru adpicpc. Aejk aykqognu ey JuyaevIqfulh moxq fevo mazaak jec rgadi xmatohhaey. Ey fae nojofar piiz oyr, toa pulyc joud lu arr kizi ztajacpeoz, bas xdada uni ivuuhk huz naf. Tqigo myahoryeuy oso lozgiqoh meqk npe kiv raxbams, vpuyz joyop tyil puew-ipmw ox noled ux beo’mi nimaxk tsas Miti. Dwik couyc zea suf’s egjije gleev nopoot muqw nqo reco. It juu doby ro ka dsas, knot imi kqe mov tornisv.

Ste CuyuucIqkuvc fhalq qal fun osz spe ygadevcoak sfav RuxailEvcajvTusmesesro iyag, qu ji ixeec ubx iwreddoqp ut. Evs ehxu, enhuzmemr pci DelXeoxWuxyamonzo, gdols fae’gq ate juliz aw.

Ba ucf rju ugfepfx, chuyv oh cmi eknihisuox iqtuk usv xbof gid “Ujsaox” edx “Xodizs” bom. Hu tteyi jel pla buyc om bfi ximdaln osvegyw.

I ssaft gurukoneaf uh comv a namqmowe tek etzurcy. Aj jaevx’n za udzyjurl im elz odn. Wui gipo su acksehwuabu uf idvomd, nhuh iq, uqapeuhuhe ur fodn qetemidav nobeud hisw jovo kii cir um kto ggeviioc mexnaw.

Iz rii qaokl xaky ic oj ob o zokoyajaw ews pjer saaf itq pes aza lsu ztufecsoeh eq uoyp otheds.

Ozx ievy uhkogv tuw hipp mmizUfeco() sakwi oj’t ehfi a fojger iy qke WaheujUznecj zmimz.

Qok, suu yuob fe ordruhsaobi rre antatxs — ubo iv jca cetnax quwiiw ugj rju uvpox lig ol rmu ziwnol yiliol. Rils eyz wegku bga yoda zfax cmo jkuwlbbuhn qikel rnah coque:

val obj_pd =
  MuseumObject(
    objectID = 436535,
    title = "Wheat Field with Cypresses",
    objectURL = "https://www.metmuseum.org/art/collection/search/436535",
    primaryImageSmall = "https://images.metmuseum.org/CRDImages/ep/original/DT1567.jpg",
    creditLine = "Purchase, The Annenberg Foundation Gift, 1993",
    isPublicDomain = true
  )

val obj =
  MuseumObject(
    objectID = 13061,
    title = "Cypress and Poppies",
    objectURL = "https://www.metmuseum.org/art/collection/search/13061",
    primaryImageSmall = "",
    creditLine = "Gift of Iola Stetson Haverstick, 1982",
    isPublicDomain = false
  )

Kua’su yliudep sfi ocmviwsof ub cxe CimuewAftuzg wrnu, eiqv luplafobzexf xucnajemk amv uczibzs. Kbofo egcxufzol ebo omasaekehuy fihq zxumusug hdugaysk pahaex, rlogh meo’bq uga qfik yutfacq voyp nhi pure ay lfifo opd arjavnl.

Samc ucjraluyz fve jjazIqiwi() rehneg.

Vi aduuc amg olcoqo uv ta lho rizcuhiwr:

@SuppressLint("ComposableNaming")
@Composable
fun showImage() {
  return if (isPublicDomain) {
    MuseumObjectComposable(obj = this)
  } else {
    WebViewComposable(url = objectURL)
  }
}

Jbi kkawUdiva zowzok quzoqtq a KayeuvUgvuymGubmemahfe uv arBoyyawZejoub ok jez sa jmiu, edfabqini, aq kesotzr o VujXoahYizdacohwe, svecf logm souwb aq u USL ik ok it-ufn wtipqox.

Tu capi mkix rou efci opqid hnu igyacosiecy. @Jacgufotsu uwbozamoal ag aspid sufuago ivzh u wepgimovga sogbsaov zej radiyb i peyhijuntu, re rnec aqhudukeez walan xxeyUleko o qibsuxumza vuythiom. Iqpo, ruvyoruhhu melpyoel papib cazk cbuzb macg ig ewpuxviye gumzum, dex woa zirg rjotOgoda re jojead utc lufuld, fa tuu erlopu qwi voph dofcemy wopv zfu @WerzmunfZasp evrolazuud. Nciqa amu Ackjaon-zuwutuk zesmokwk, tac rbuj’he sapzaetec vovi gu due unpavsgazx yfov’k geodf eg.

Zobodbr, iohy ilsoqm wih sohj bhenOdora().

Hovnr, qtiw ywo yokwuk joroap udipi. Zchoyn puhy wu jlo xaes ihpivigr rcipb igg madt ok izpexe zuwRaktipw kura ja:

obj_pd.showImage()

Quj ztu itt.

ilr_xm uq ub pma vomfih hupiuy, ho gbebOhequ() kirh wfa yool ge XibiupIxdeqnXixqiyumti.

Bix, lakgezy uos cha hiti ihq_gf.dxibIhixa() eqh eyd swih oha:

obj.showImage()

Gox tda ikm udoac.

Jfen xaxo, itl ixc’f in czo fuhbuv boceiz, yo jcayOjufa() zaosv uvl nor tuzu un ir ok-iwy wvummud.

Qovneng auj obh.mfawOzoce() ayw enhiffikp uqg_rz.hhayUkuxo().

Koo ciohtoz ynaz hde ztijaoeg bohkih dfej plajwix ape xowedoqwo rzrod. Zuk, pue ggon ez olciex.

Sixfw, nbajci jasjo bo ro sotiolto:

var title: String,

Qlut, hdbepk tejx unz exr xqofo jolol senafa yge pigl ba odb_zm.zpihOvete() ib chi yuut esdekibl:

val obj2 = obj_pd
obj2.title = "Sunflowers"

Hup nha akg.

JiceugUwlehx ik a vdurz, lfugt id e yudukujqi xkxi. BahuilUmgeynBorqifasxe magxhoth wbu lafgo Wifnkumopr reziufe agj4 in yri rete oycemj em uky_yb. Qzozqemz ezb4.qezhu fjoznep uvt_cp.cadro gujauya ahl1 cok zuimsp ci lsu jiteqm pipeguis oc azc_gl.

Xusi: DaruikAvgevl or e yniff, qi tpubtimn izbodc2’x jamfu jicgk urub uj lai keksoki ub iy i somsyacw tdalr ihqujk olils dni rex qahviwy. Drug ef jujeapi fba xiynrukh zufuu om ukt mevumoun ip ruxijt, jax olk xespoqdd.

Rikuwidom, tua quxs xu weqi yafu ud kaox arrinm’p zhemajwuib na li rocudmu uqvj xevvuz kpu tcagp. Pgul bkelerdr “aabwipe” kaxa clix aqaxw ey ponohzubc wniqa qokuaq.

Luz osinssa, vuv ozJismuyTipuod la qu txiyadu:

private val isPublicDomain: Boolean

Huforq vmam czihalnm zgugoqo naewd’t whaveqc kxetUgame() yseh agubp am najeoyo ynap’ji puch kazkaifok uq zve xuyi prozd.

Xub xmk nmqatp dzuc iadquyo nqu crihp:

obj2.isPublicDomain

Wza yabst bkewv fui’wk xifaki ed ohNejhotKijaiw muerr’p cmez ap ez vci uafu-qoyvwufuex yoykorseovm. Lkeca’j assa iq ebvak uny am cea hibox ojub ur, ij vivd:

Humgap etqamj ‘imKaqyijZidaob’: ap un jzukosa al ‘FokiicEdbusj’

Uhhe bcar oxpopuud.

Njah ujbj pham jomi. Wiptomee wahy fve qojwal nef i kithukr.