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SwiftUI yog tiam tom ntej ntawm Apple's UIKit, thiab nws tau tsim rau txhua lub iOS app tsim hauv 2019.
Tab sis SwiftUI tseem tab tom txhim kho, yog li APIs tsis tas yuav kawg. Qhov no txhais tau tias nws yog qhov zoo tshaj plaws los ua raws li API qhov tseeb version kom ua haujlwm zoo.
Txawm li cas los xij, SwiftUI tab tom yuav tawm sai sai, uas txhais tau hais tias cov neeg tsim khoom yuav tsum hloov lawv cov qauv tsim ib puag ncig.
Yog li peb xav, vim li cas ho tsis tsim qee cov lus qhia yooj yim, siv tau uas qhia koj txoj hauv kev zoo tshaj plaws los siv SwiftUI hauv koj cov haujlwm?
Cov no yog pub dawb los nyeem, thiab peb paub tseeb tias lawv yuav pab koj pib pib ntawm koj lub SwiftUI app.
SwiftUI Tutorials yog dab tsi?
Apple's SwiftUI lub moj khaum tshiab yog qhov hloov pauv kev ua si rau kev txhim kho cov neeg siv interface. SwiftUI yog Apple's brand-new user interface txoj kev txhim kho, tsim los pab koj tsim cov apps zoo sai thiab yooj yim.
Kuj ceeb tias, nws yog ntau tshaj li qhov tshiab UIKit lub moj khaum.
Qhov zoo tshaj plaws yog tias koj tsis tas yuav siv XCode lossis Interface Builder los tsim koj cov apps. Hloov chaw, koj tuaj yeem tsim koj lub interface siv Swift code.
Qhov no yog ib kauj ruam tseem ceeb rau pem hauv ntej vim SwiftUI yog yav tom ntej ntawm iOS kev txhim kho. Txawm li cas los xij, tseem muaj ob peb yam uas koj yuav tsum paub txog lub moj khaum ua ntej koj pib siv nws.
SwiftUI Tutorials Muaj Dab Tsi?
Kev cob qhia SwiftUI tuaj yeem ua rau koj tus tswv ntawm kev txhim kho app; Txawm li cas los xij, qee yam uas koj yuav kawm suav nrog:
1. SwiftUI Essentials
Nov yog cov lus qhia yooj yim rau SwiftUI. Koj yuav kawm seb SwiftUI yog dab tsi thiab nws tuaj yeem ua rau koj li cas. Nws yog dawb thiab qhov chaw zoo pib yog tias koj tshiab rau SwiftUI.
Piv txwv li, koj yuav kawm paub tias View yog dab tsi, yuav ua li cas siv SwiftUI View, thiab yuav ua li cas kom koj lub app saib zoo.
Piv txwv li, tus qauv yooj yim rau SwiftUI app yog:
struct ContentView : View { var body : some View { Text ( "Hello World!" ) } }
Koj yuav kawm yuav ua li cas los tsim koj lub app siv no yooj yim, haumxeeb template.
2. Muab Kev Ua Haujlwm Tag Nrho
Koj yuav tuaj yeem tsim kom tiav app nrog SwiftUI. Koj yuav kawm paub siv UIKit, SceneDelegate, thiab Storyboard. Ua ib lub pob yooj yim. Yuav ua li cas muab tso ua ke ib daim ntawv teev npe thiab ib tug navigation bar nyob rau saum toj ntawm txhua yam.
Kev khi thiab cov ntawv yuav yog ib feem loj ntawm SwiftUI, thiab koj yuav kawm txog lawv. Yuav siv lawv li cas los ua kom koj UI teb ntau dua.
3. Ntxiv Media
Muaj ntau yam uas koj tuaj yeem ua nrog SwiftUI. Tab sis koj feem ntau yuav siv nws los tso tawm cov xov xwm, uas yog qhov yooj yim tshaj plaws los pib siv SwiftUI. Animations, duab, thiab yeeb yaj duab yog txhua txoj hauv kev zoo los tso tawm cov xov xwm, tab sis koj tuaj yeem ua tau ntau ntxiv.
Txoj hauv kev yooj yim tshaj los ntxiv xov xwm rau koj lub app yog siv lub koob yees duab. Txhawm rau ua qhov no, koj yuav tsum ntxiv UIView hauv koj lub app saib cov tswj hwm thiab ntxiv cov cai hauv qab no rau nws:
import SwiftUI struct ContentView : View { var body : some View { VStack {
Image ( "image_source" )
}. background ( Color. black ) } }
Ntawm no, peb tab tom ntxiv UIView rau peb qhov kev pom. Peb kuj ntxiv ib daim duab rau nws, hu nws "image_source."
Cov duab () muaj nuj nqi yuav coj cov duab los ntawm image_source variable thiab tso saib nws.
4. Ua hauj lwm nrog cov txheej txheem ua ntej cov ntaub ntawv
Thaum koj tab tom tsim SwiftUI app, koj yuav tsum tau ua haujlwm nrog cov txheej txheem ua ntej cov ntaub ntawv. Piv txwv li, tsim UIImageView uas qhia txog UIImage ua ntej, lossis UITextField uas qhia cov hlua ua ntej.
Koj tseem yuav tau tsim cov txheej txheem UIViews ua ntej nrog SwiftUI. Koj yuav tau tsim ib qho ntawm UITableViews, UITableViews, thiab UIAlertViews.
5. ListView thiab GridView
SwiftUI tau tshaj tawm ListView thiab GridView, uas yog cov tswv yim tshiab los tswj cov npe thiab kab sib chaws. Kawm paub siv lawv li cas hauv SwiftUI thiab siv lawv hauv koj tus kheej cov apps.
6. Kev Ua Haujlwm
Tau txais ntau dua ntawm koj daim ntawv thov nrog XCode kev pabcuam. Piv txwv li, koj tuaj yeem nkag mus rau ib qho app tag nrho-saib hierarchy kom pom tias UI tsim tau li cas. Koj tuaj yeem siv XCode los tsim kev cai segue thiab taug kev ntawm kev pom.
Cov Lus Nug
Q. Tus lej sib npaug npaum li cas rau kev saib ua ntej?
SwiftUI siv code-gen los tsim qhov saib ua ntej. Cov lej yog tsim los ntawm UI koj tau teeb tsa hauv XCode.
Koj yuav tsis tuaj yeem hloov tus lej, lossis qhov saib ua ntej yuav txawv.
Q. Cov yam ntxwv ntawm SwiftUI yog dab tsi?
SwiftUI yog tus neeg siv interface txhim kho lub moj khaum rau iOS. Nws yog ib tug ua tiav lub moj khaum uas yog tsim los ntawm lub hauv paus. Nws yog raws li lub hauv paus ntsiab lus ntawm "unidirectional data flow."
Nws yog ib qho qhib-qhov txheej txheem. Nws tau tsim nrog Swift, uas yog Apple tus tshiab cov lus programming. Nws yog tsim los tsim cov apps ceev thiab teb. Nws siv UIKit tshiab.
Q. Qhov txawv ntawm SwiftUI thiab UIKit yog dab tsi?
SwiftUI yog tus neeg siv interface tshiab, thiab nws tau tsim nyob rau sab saum toj ntawm UIKit lub moj khaum. UIKit yog tus qauv iOS no lub moj khaum rau tsim cov neeg siv interfaces.
Nws yog qhov muaj zog tshaj plaws thiab ntau yam neeg siv interface lub moj khaum ntawm lub ntiaj teb. Nws tso cai rau koj los tsim kev nplua nuj, teb, thiab cov neeg siv khoom zoo.
Tab sis UIKit tsuas yog txwv rau iOS platform, thiab nws tsuas yog muaj rau iOS 12.0 thiab tom qab ntawd. Yog li, SwiftUI yog yav tom ntej ntawm iOS kev txhim kho.
kab hauv qab
Hauv kev xaus, koj tsis tuaj yeem dhia ncaj qha rau hauv qhov project thiab pib tsim cov apps siv SwiftUI.
Yog tias koj xav siv SwiftUI hauv koj cov haujlwm, koj yuav tsum tsim lub hauv paus ua ntej. Yog li, koj tab tom tos dab tsi? Mus tom ntej thiab kawm SwiftUI hnub no!
Sau ntawv cia Ncua