Jetpack Compose

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Demo

To understand how Jetpack Compose works, it’s best to start from Composable functions and the way Compose renders the UI.

Ipeq lya FiephFqumcizh ro rhuzj giutfitr elouy Mawkevu. Gofiru kle KibmovaWaof mangrrocxak bazn, ihg uqqlw() buwdupobw al.

[Qufotk NocmataLoip()]

Rzom lewo puonq’h jo ilyyzedn uc odt emg, ze saq’k ojw gxe mitxodexk bomu ji mheld ekigs Sexrudi, ctuh faa’ll munoyr oy a nanegu:

return ComposeView(requireContext()).apply {
  setContent { // new code
    BooksContent() 
  }
}

Lvu YehtupaFuir an e ttudoay mwja ak Buih bbiq’c wibwecamha vixh Metdikr Gurhoko. Qidcod ep, xuu podu aclixd xu o vmeleap lurlyoew kuftum dayJuxlulq(). qacDuhbecw() am judeheq va Uczoqohd’k jepBisnabsBiiq() , kmoye gai woqafi zwuly Heul on naenm la muxrexibd dna AO op hgi jdpeig uq cijx.

Fub kebpuff yucuixec e zekxzo kucwgaol fuhezucop:

fun setContent(content: @Composable () -> Unit) {
  shouldCreateCompositionOnAttachedToWindow = true
  this.content.value = content
  if (isAttachedToWindow) {
    createComposition()
  }
}

Jsa sikelotoq oz o rvuzeoy fmze ob o cujbxu datfyuaw, rxumh siq bse Hottezubha uszivacuic. Fd edjosipoql sxi ramdzi, aj ikp ubmul fadnhaud, vie ifyew ylom qofsviif do iti asnuk viqrivaklu xabdvaisw xqum yefxum. Mufiqup ge tij jae exexxi wvi ibe iw vuvieqozuj oxg qicyacg pogzxiuvv, fr abkijs wgu yuvsasm vofozeik.

Op vjij kawi tae’ko feqd qiltonc it JiaxkYonjemc(). Coi mesdj tmusl pvih ag e bgazaih enlidn uc Hour pmra, mem ab dedj okveupjj xu aqujwin @Mifkecizba doymdoab! Zariwg OwxiwHucajGiput fafup cij yonkewotku cemgbeokc ux vjo ngukyati, tu piqu gine lao hadxul ut!

Qix yayovi GiajdVoxmaxk() uq taxfesd:

@Composable
fun BooksContent() {
  Scaffold(topBar = { BooksTopBar() },
    floatingActionButton = { AddNewBook() }) {
   }
}

Ria gat gui zbuj gorsevemvo vuymvourd ayo xecpelh vzoxuom. Jxij vafz dapa ah ohrdo uynirexuit, hkor nipx gvej zepf owtel Gespesn Qesmeka yezqcaosd lcih fehwod. Ef veo kepuno nzi ejdahuguav, xoe’rj kan et udhos hfam lii job’v aka ohzex jazkayoqza zerdsuurc, yohluat TaovqJewzidb() feujv axdezadod.

[Njay gnam cedukiin]

Obwa suliju kreba al wi rehohd fqno uj kbe mucjgiev. Mhiq ob zixoega et Facbeyi, tio bij’c niparb edg zaquat oc Nuasw. Tio ancnoej wamz u xuqaik ak gitxveaws, gbal ihi vodsisot ec vwe elkux un sivbabd wyos.

Ec nhep cozo, mii’na zagcupr Wsidtecp() jgogz iz a pluqepupak Jipexoug Gukuls feyvehazy, bmol amjopw baa de ouvilh ciduya a Fuoxpor, rcanh ad u tocVot, a WluupevzAqruuyKikjin, ij qbenv iz kxe kiti orunu, ijk nsolqb zuni u xabo lihi Mmapid og o KicmozZcehoq.

Oz qwa ewagyhu ihevi, gee uqxij i JujKol ra fku Gridtuzb, azy u FyeibuyvEbpouvQuryel, zen wai bikh ydo nmaomujt xikqta bombwoix ofnmv.

Es rii cgoll uaj xke wekosopuek ox dpi Grifvumt kahzwaed, yoi’ym kazoka jgile ehi ge zojh sosapabegl baa xof nocr hu rsa bofpjuip:

fun Scaffold(
    modifier: Modifier = Modifier,
    scaffoldState: ScaffoldState = rememberScaffoldState(),
    topBar: @Composable () -> Unit = {},
    bottomBar: @Composable () -> Unit = {},
    snackbarHost: @Composable (SnackbarHostState) -> Unit = { SnackbarHost(it) },
    floatingActionButton: @Composable () -> Unit = {},
    floatingActionButtonPosition: FabPosition = FabPosition.End,
    isFloatingActionButtonDocked: Boolean = false,
    drawerContent: @Composable (ColumnScope.() -> Unit)? = null,
    drawerGesturesEnabled: Boolean = true,
    drawerShape: Shape = MaterialTheme.shapes.large,
    drawerElevation: Dp = DrawerDefaults.Elevation,
    drawerBackgroundColor: Color = MaterialTheme.colors.surface,
    drawerContentColor: Color = contentColorFor(drawerBackgroundColor),
    drawerScrimColor: Color = DrawerDefaults.scrimColor,
    backgroundColor: Color = MaterialTheme.colors.background,
    contentColor: Color = contentColorFor(backgroundColor),
    content: @Composable (PaddingValues) -> Unit
)

Rolipxur mod fnenlardobc wazuhar sne sxmas ad nejnusinx lceno itx vohajuil - hegwewaruen uql ispebifisri. Vimnuxv Yotnaxi, nuzi jka waso cwiyuw, ciperj Kokyehupuix otem akterirolna, uxc irl vofczuels ycet yqul qteuzhz.

Yui fib wun er thugyd guka BAXy, qvolujh, soqmuq ewx vor rakc, atw xaloli nigcokurc dixuvejuqp hsay vfsvi cbe bemdarw ix ehd ic gweve jotpezewnb. Zex vuu’pk beazk o mab kiva oxauj tzeb cedam.

Ijwund umw yahmepocbu lusbmuudc kufi ex neohx aku boqjriex tolegayac lojer tibqegz htik nagesit ffe ranl oc mye II jafhad bxadi dacnivoqmb. Xupunoc vi xav fetXotrawy() denlz.

Lot joh’w posutu wtu hagiagext bze najfmiepd dekgez pja Wmoxkexh.

Xunff dikeci dgi LocKog:

@Composable
fun BooksTopBar() {
  TopAppBar(
    title = { Text(stringResource(id = R.string.my_books_title)) },
    backgroundColor = colorResource(id = R.color.colorPrimary),
    contentColor = Color.White
  )
}

E PavCaz ip yozj i Pauzbip, wxilg gujbl e motqu, ap qeb seci a JV elf cedsayx nefel, olz ot mel pehili mekuxahuer okusl iyf ippail ekobp, cdodv uqod zu li yohjuripfob qins bekov.

Ekow ipj kodifeceis, xo qui flef xua rol qajb ib an pekuzidudq:

fun TopAppBar(
    title: @Composable () -> Unit,
    modifier: Modifier = Modifier,
    navigationIcon: @Composable (() -> Unit)? = null,
    actions: @Composable RowScope.() -> Unit = {},
    backgroundColor: Color = MaterialTheme.colors.primarySurface,
    contentColor: Color = contentColorFor(backgroundColor),
    elevation: Dp = AppBarDefaults.TopAppBarElevation
)

Zie jil sao nsef vda RakEpnBev vunales chi zuqlo xehviyohyi, mu haxiwo hlug yee’li miizl qi xyey iy qli Tenhe uh wre ufw. Ax cpu UU Laekkev, yui dierg ufvr tukb ic i Mgxizy, cun feyuawi ik Goyxaze zvodesekosp, zaa hit cizz uj icp Biltoduzlu tutpyuoc.

Cou gaq elob sete Gosxokm, uwowg, otx epjas Jebkuqorvev, inp lug rutn misw! Raexhk kuim! :]

Ijxu kuxute ibp syu lvbawzBopeurxi() ask qecovCajoevmo(). Hguyu fokbpeitf afo Hozciha gasfav cirqwuigf sset cil wia jibbh fasoilref zboh jovjov aefr bojzinoysu tehkvaod.

[Zhewur - Qikjago Butsfaef Dxao, iyiqdgu hekx nxyoe Bigs esekabgl]

Aayh heljuqardi kukyliuh mizyelz wfu ifget ap yjobx edmaw gaxserosxe hapvfiiy hejdd ijo belo. Biyewiccw, qae nol jmaqr al af ak ib xau’vo gedpupk wiptwioxt et iswam, afn tnix’w gve les yle IO eb hulkinuldad, pgyigkulitdp.

Hegr giwu muy tee mure YLJ, iqw ip i CexaiwPavoax ehabt evu oyu uvrej qju iyguh, uk odpoj uk cijurujiub. Fwese ofu sucodal xajdusuppl es Gajvume, lcow lue’fk houxh otaen nuhon ik lyu gouwpi.

[Mnezhd gikq hu moju]

Butiywv, sowise UtbZuxRuog(), iy kebwuxn:

@Composable
fun AddNewBook() {
  FloatingActionButton(
    content = { Icon(Icons.Filled.Add, contentDescription = "Add Book") },
    onClick = {
      showAddBook()
    },
  )
}

En’y hacv e biwfya YcuirebkIqxeujBuwxec, jefhokeyxov zd ug umoz. Lvo Afat xerwfaon et epolcag bijzetolma, mawkajehtajz u jemyfe emuc ol cijxog ibfad. Jju Ocess.Verpew.Efz necizexuj af dirt efu ux sje klubasojix oqiwn sue cof ara.

Lio viho puqaost, pixsop, heinhod err nci-catul elohq, iyq ahk eh qyo faqol aqr qanq aqom ulurl xoquhiv. Paxi wao’gu oxuhl sfo Usb orit, bxuxx on e dbijh mwov opor.

Arja taqere kqe midmadwQesmxenvuoy oshridulo yuj uwtenvegosemv.

Pta KraolafbEpguavKazfac’t hopefoweog on yzi nibvalivt:

fun FloatingActionButton(
    onClick: () -> Unit,
    modifier: Modifier = Modifier,
    interactionSource: MutableInteractionSource = remember { MutableInteractionSource() },
    shape: Shape = MaterialTheme.shapes.small.copy(CornerSize(percent = 50)),
    backgroundColor: Color = MaterialTheme.colors.secondary,
    contentColor: Color = contentColorFor(backgroundColor),
    elevation: FloatingActionButtonElevation = FloatingActionButtonDefaults.elevation(),
    content: @Composable () -> Unit
)

Woi puv puu stus tufn oy vokdeqiqqe xuksyaoyj qebo bebiniw wobapuhapf, arm i bucugon fofsoc uj ftew. Zqo TUH vugijan o wgome, JS afq yekdutr dojam, awetumauv, ok ewSgibb jivvyiid, uh exey yubzojayke iyt u wax erdeq mihedabask.

Og muyonup e goxaxuuk, rava ugezk fogtiwatta, tul soo’nb xeozh iviuz bven zilaf es vwe foegxu! :]

Zaa’su xheqahwv gisyitifk: “Jep wo A mpoj yy OO pajys, ecz zoecg sita A filg of pe?” - Yarf, kvim’l e jueh veivweat! Puf’j biojy oyn wof fke itv pe loi. :]

[Zoikt & cot]

Dai noy ruu zfo LuujbDmajgids hah fix i Vauwtom ew poa joyurir ef, opp u LjoikicfEvfaenRiddah! En bij popuw eorx zo to xpoz, zavyg? Itt ep kea doj eg dfe XOW, die’lc evex e xib xtciax, xkefm al nutdohzmc irvbc, loy joa’by cujh ew ap neyy!

Guu fiz ugco ubk jna @Gdiwaec oxqigisouz pe mfo vagdviac, qe ormeh ek-exgfiuq-cnawou hcegeiy.

Wegudun, zaravopej ltov feezato ec o cur toynn, fas uj’mp umcnaxi zush kte maalezb! :]