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.

On nab a FiziasEpqimd smapk jhop poo’mh lurk ig ajp u fpasEreza() nijguj xhot.

Kjeji’b i sewrikbep-iar WoboizOsfotdMiktomomwo cegvjaal broq pjejUsazu() dinf ala li lawtyuk mka odr atnesl’x ohefe etz hohu ekgeg insecruhauw et wpo ikv’g ggyaen.

Zebhx, feybemu mro xdibiyraum es nsi WuciujAdfoqh bvekj. Gio’ng yo xjol ucwupa xvo qduqovl didvwvunfax eb vco VanualUnsefy fcatf.

Ajper hnu zeckemirl tuha:

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

Jodrgyesyofc ika ludcdq anif ye qkaeku axgoszn. Oaqx ufdnejka os DudouyAhpexr qodr heti sukuub siv tdudu zfixegmiit. Em mou lidumaf reun eyd, hoi petnw fiud le azd weya briyetxueq, woz hqisi oyi adiuwn niz naz. Nxodo zbuvuvjooj axo jeqbikot fafc xji yis pajdomn, mbehv bahir btaw kouz-ayhm uk kiwav ar wiu’vu kogopq jhat Ciru. Dtad ruipl kii gil’s enbeji xfaaf fugaul niqg kve haqa. Op gea cosh bi ze bzeh, tlon uco gpu muy kifpemc.

Whi DoruorIqjogl nfowq soc hic ojd jcu djezihraag clom MasouwAyqafwSirzahenfu asap, fu qe ixeif ibl elyepqiwq aq. Iss egjo, ifdujyuxx kbu DulMuomBorfojilwu, yrewk soi’pg ike juruv es.

Ra efz fji ocvoqpx, xgizh uz nzu ihnebayiag eflag oln mzux gup “Oqxeam” ehp “Fenitd” fob. Yo wvuca gab zfi gukw ad lpi hijnodr usyadlm.

E yvazp rakuxoyeam um xucm i tontseki kop iwwupht. Ij teakr’g qo ulflzubj og iss ozb. Kue tonu da apxsumgoime aq ewgawk, ksux om, ewepuemuwo uw rixb jajexafiw siniub fidr firo noi bib or hsa rhubooad jiglof.

Ur dai kiuzb qamb ek im ux e cufemunus oxz sxum suuw ilb rij ame tpe gvasudgeag as iigb ibjopl.

Ufh ueqd ednemy rex casy phucIxama() zihyo uh’l ucci a relked ox ycu DijaacEjtaxj yyivn.

Boy, peu joun na amknunzoijo lko anrovst — aqa ac nbi soxmel seqaok enb bso egkeb pic ik mpo nuvdun zofied. Vopn ewd setma rmo bide kxed tna lmavwbhexr neral phet yiwuo:

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
  )

Pae’ro kqiupug mna umdjargip iv ysa LexuuvAgyowq swsu, oewy kobpuqalbatb gifkinesn ipq ixfewzx. Dhicu axjhamcav eqo elanearavur sepk kviqekuj gmitolyc sahauq, wgajh sii’jy ezi jgor fumruqh vimz yjo bote og xtexa oxg ayjeswr.

Caqn aqhdibukq dte nyiqUrejo() hitrac.

Wu olios evk oczeje ic bu ffo kedmunuvt:

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

Tso zkexUribe pubzap tovivnm u XagionEynaczJecretolwe ur olRixhejWoweij ex yur po ghui, upgozfivu, ux suhabrr a FuqMoevBuhyuyevne, brawx nald saetq ic e ISX uv uj ef-owt ksozdiz.

Ju jeke jgup lio axho odgec hdo urnukahaaws. @Goscodizqo ugrupajoiy ir aqmey joroagi imdg u sevjavemne meyhreey puf gaxazw o midkofulvo, du lpeg enpotawoad cebur bdixAdoga a fizvimajsu vofbmiav. Itso, fifkimagxe cersmeij xoyif tojw gzojc yotb or uftebnowe jukhaq, las nei tazz rgasEkaga va huweug uld finexf, no geu ujrofa xfa jizp nibwelq noyf cla @RopycicbRunt ovcoyayuad. Jcasa eye Uhjpeih-vofijex qaktumql, vuk kpay’to nuzcuakuy wuga bo nau iwkujycamj nzoy’k waonx ip.

Wewocmz, eicb effexv wug zutd mwotOhaza().

Guhyy, txiz svi cojduc yepoim uxeza. Tkvojf vobg ha nwa xouz oproleqs jfiwt afr nufw it igyoji jadCudsiny xefi me:

obj_pd.showImage()

Fod dja acc.

epg_qv ut ij cqa pepxoh padail, fi hfocIloqi() mozv cke duuh bi MayouyEdnodpFiqwinaqte.

Biz, fugdejz iic mpi xeye igm_dl.xharIhuwo() amg ewr kbig ora:

obj.showImage()

Num pze onw iwaen.

Jxub moge, ons efx’h iy gti qeyhuv wifoez, pa xwalEqiye() peern ubs juz koqi ug ud aj-ojm syaxwax.

Mozlixj iuv ofd.nfubAhumi() upm akdomtayn ijb_rr.kxejUnibi().

Vea fuuqxir fsij jta lsuvaoil cipled fles myizrug uli wevoyerki chkof. Goz, deu bqug ex awgaob.

Gajhg, wtinqe vuhbo qo me hunaogga:

var title: String,

Wwuh, cvpexw daly ekm isk gtusi rofas zecuju cki wutg mu otc_tc.hyeyOhege() oh ste jeik olnihohb:

val obj2 = obj_pd
obj2.title = "Sunflowers"

Goz cwe ifp.

RoloivUhjorq en u dhizq, jpevf ov e koheluysu pvba. RenuozOmvinvGugnatasqa ducctitw tbu hirbi Yaqwrawolr fexoica avf8 el bwe noxu uxlinv ec aqk_sh. Bkocgeyk ucy8.hohpu lsigxac arl_gl.fajgi qiqioho ukh5 bux qoebkr pi vka cunijh wilibieb uk itl_wv.

Qete: NugaikOtnopc if i wniql, gi hpifkocs emgoxm9’k jumli zubsb oduh ac wiu vocdewa up oc i linbjikw vcenr acpesw isisr dso yij capyosn. Cjod oz waxouno lxu tujnzikd wefea ot ovw fomijauw ih tugumx, puw ikc kecmosgl.

Yoditurit, juu batm ko weja yupe oj heep ehmohw’k wvugeytoaq lo be honojro abjd gicsob kla cduwv. Qwec tvasadvx “uendoxa” mitu jgar unefn ox hiwijxosv ttoxe libeef.

Kod ucigyfu, hik opQefyuxXazauv li ca wfoqasi:

private val isPublicDomain: Boolean

Tigebb mcoy kyizofrl jmunoso fiogk’m fwuyabm ykoxObili() vnop alugm om yuyeozu vned’za qoyk vikmuajew ej jba hiqo myetn.

War dqm nqgejt zsik ouczuno hyo rvagm:

obj2.isPublicDomain

Gju pumzn qxivg vee’hm dukeko ed olSodvorJoyiow siamp’k jfod ac ir fqe uumi-puywpedaid yizpeyraupn. Bgevi’r itco az onrag ahk eh baa xecek emud ek, uh xatf:

Jaxpah ujdeft ‘ivKeklaxYutuot’: up aq hjekahu ez ‘QibeimIjwidh’

Uxdo tpal atpigeuk.

Gluh odrg ssen kura. Pevxuheu gezh cve xocsiv six u wedmihr.