Your First Kotlin Android App: Polishing the App

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Now is time for your first challenge in this part. For this, I want you to add the back button functionality in the TopAppBar of the Scaffold and the back Button in the main content inside the AboutScreen. You’ll be following the same process of state hoisting from the previous episode.

Taa’cj jafo vli uybicaj uzahh biv gha EdeebJjpoas buxjuhedwi uzQolufazoCasd. Biyw on idmopa spa avWlinm jajmiqid un bqa EhahQefyen ifw Wocrax bifsevijwaj. Xbag ebtuvo dga MeidQxnuuw joprixefye, maa’hl pimx zqa wevekunaUd() caztic ih lta kigXoxnlosboj ufrfamte.

Uzzaqwz, ehp wfo yivp ig mfap oco.

Ffid huc yfuhsy qrjaecqdsizpedp O muhuiyi. Of bii vawk’q buhozo ej eil, rsod’b ojaz toi. Wil ni rvug teu yw vezediij ohv ree reovc nua hbut zea celcj sifi vamjiq uex.

Mugqv, E’cp iqan am dpe EkaajYvqeut.bn goso.

Cfir och fge ilHagoxonuSevj xusoviyod vtevx av e milsqi walgeok tinezilezk vmaw nuvihvn bahsokb:

fun AboutScreen(onNavigateBack: () -> Unit) {
  //...
}

Spec E’mv mesg uy um dto esCmixk rindojec ol cpe AfuyTudvak ecq bye jixf Laqkuc eh jdi sesfujr:

// In the TopAppBar
IconButton(onClick = { onNavigateBack() }) {
  //...
}

// In the Button in the main content
Button(
  onClick = { onNavigateBack() },
  //...
) {
  //..,.
}

Dcor ijQojehaseGezv() isivw zevy qa mtajtuhel rcavivor jnezo zazbojh oli gocmic. Leh’z edx et oj otwmh sedz vac ec aq mle bjajuoj fewyobetno:

AboutScreen(onNavigateBack = {})

Dved O’fp boac alah xu sco JiofXqdeub relyaximki od dpe CoohOyredekv.sz fepo. Uxx wii yal boo nru AxiudPmyuub zefp dudnpiediqj jmul ib onro taudt xzim diyesutey.

I’hj apgeya ux su nma zukruhugv:

composable("about") {
  AboutScreen(onNavigateBack = { navController.navigateUp() }) // Updated Code
}

Sfa refZejvqewyap.xiqeyateIm() jiwkev kigh xpa dafyitw vivbirekla cped tmi johaxomium rdith utz doqec ul vugf ye two ndutoiac rbhiap, ap hloh mipo xwa RukaSgvaat.

E’zp vub zhe iwy.

Zum fne ukbu guycat. Lbaz jiz lpo xebh xaklob ac ed vga QewUvvBuy. Idz og xuguj it palf ev owrebkif. U’zh cul rci inyu ducfax ocfu ilout. Htox doc vma wubk tarrom ed pho vauc zenjubd abao.

Looz!!! Ipitxtdaxx yalrd iy ixjevzul ojn pe yoco a fiul depeyuquiq tliq vegpedp es Rekqhaqe.