Peb npaj koj qhov kev pom! Kev ua tau zoo nrog ONMA scout android app kev txhim kho yog lav.
Hu rau
Yog tias koj tab tom xav txog kev tsim Android app, tom qab ntawd qhov chaw zoo tshaj plaws los pib yog nrog cov cuab yeej txhim kho app. Feem ntau cov neeg siv Android Studio, tab sis muaj lwm txoj kev xaiv thiab. Yog tias koj tsis paub tseeb tias yuav siv qhov twg, xav txog kev paub nrog Kotlin, uas yog hom lus ntawm Android operating system. Cov lus no yog ob qho tib si qhib thiab pub dawb, thiab yog ob hom lus nrov tshaj plaws ntawm GitHub.
Yog tias koj yog tus tsim tawm Android, Tej zaum koj tau pom tias Kotlin tau nrov dua txhua hnub. Hauv ob xyoos dhau los, nws tau dhau los ua hom lus thib ob rau Android operating system, tshaj Java txoj kev siv. Ntxiv rau qhov ntawd, Google kwv yees tias ntau dua 50% ntawm cov kws tshaj lij Android tsim tawm tam sim no siv nws. Thiab lub tuam txhab hais tias cov lus sib xws nrog Java, ua kom yooj yim txav ntawm ib qho mus rau lwm qhov.
Kotlin yog qhov chaw qhib, statically-typed programming lus uas khiav ntawm Java Virtual Machine. Nws tseem tuaj yeem muab tso ua ke rau JavaScript. Nws yog tsim los ntawm Lavxias teb sab tuam txhab JetBrains, uas tseem tsim IntelliJ IDEA thiab muaj pab pawg txhawb nqa Android loj.
Nws syntax yog streamlined, ua kom yooj yim kawm. Piv rau Java, Kotlin muaj tsawg dua boilerplate kab ntawm code, ua kom sai rau cov neeg tsim khoom los sau cov lej. Ntau tus neeg paub txog kev tsim tawm tau xaiv Kotlin hla Java, raws li nws yooj yim dua los tsim Android apps siv Kotlin.
Lub Android SDK muab Java thiab C ++ developers nrog ib qho kev loj hlob ib puag ncig. SDK muab lub moj khaum los tsim cov apps hauv Android, thaum NDK muab kev nkag mus rau cov tsev qiv ntawv ib txwm muaj rau cov cai ib txwm muaj. NDK tso cai rau koj los tsim koj tus kheej cov tsev qiv ntawv ib txwm muaj.
Kotlin muaj ntau qhov zoo rau Android developers, suav nrog kev txhim kho kev nyab xeeb, kev txhawb nqa rau kev ua haujlwm ua haujlwm, thiab a 40 feem pua txo qis hauv Java code. Lus kuj yog 100% tau tshaj Java, yog li cov neeg tsim khoom tuaj yeem yooj yim ntxiv Kotlin rau lawv cov codebase uas twb muaj lawm. Ntxiv rau qhov no, Cov neeg tsim khoom tuaj yeem sib xyaw thiab sib tw Kotlin thiab Java code nrog kev siv zog tsawg. Ntxiv mus, Kotlin annotations tso cai rau cov neeg tsim khoom los kho cov txheej txheem txhais lus.
Yog tias koj tab tom nrhiav rau cov lus programming rau Android daim ntawv thov, Kotlin yog qhov kev xaiv zoo tshaj plaws. Cov lus pub dawb thiab qhib qhov no muaj ntau qhov txiaj ntsig zoo rau cov neeg tsim khoom. Piv txwv li, nws tshem tawm cov ntaub ntawv siv tsis raug thiab muab cov haujlwm ua haujlwm zoo li coroutines. Nws tuaj yeem txo qhov nyiaj ntawm Java code los ntawm kwv yees li 40 feem pua.
Ntxiv rau nws qhov pub dawb thiab qhib qhov xwm txheej, Kotlin kuj yog cross-platform. Nws tuaj yeem ua ke nrog Java code hauv Android app, uas txhais tau hais tias cov neeg tsim khoom tuaj yeem sib qhia cov lej hla lub platform. Nws tseem tuaj yeem siv los txuas ntxiv rau Java app uas twb muaj lawm. Kotlin muaj cov txheej txheem nplua nuj uas Java tsis ua.
Ntau lub tuam txhab muaj npe loj tam sim no siv Kotlin los txhim kho lawv txoj kev txhim kho. Pinterest, qhov nrov yees duab sib qhia app, tsis ntev los no tau tsiv tawm ntawm Java mus rau Kotlin. Nws kuj tau txhim kho qhov ceev ntawm nws daim ntawv thov thiab txhim kho nws tag nrho kev ruaj ntseg. Evernote, ib qho online ua haujlwm-tswj app, yog lwm lub tuam txhab uas tau txais txiaj ntsig los ntawm Kotlin app txhim kho.
Tsis zoo li Java, Cov ntawv thov Kotlin xav tau cov lej tsawg dua thiab tuaj yeem tswj tau yooj yim dua. Cov txiaj ntsig no ua rau Kotlin qhov kev xaiv zoo tshaj plaws rau kev txhim kho mobile app. Thaum Kotlin nyuam qhuav nkag rau Android mobile app kev lag luam, ntau lub tuam txhab tsim tau twb tau hloov.
Kotlin kuj tseem muaj qhov ua tsis tau zoo uas qhia txog teeb meem ua ntej lawv mus txog lub sijhawm ua haujlwm. Qhov tshwj xeeb no pab cov neeg tsim khoom txheeb xyuas cov cai tam sim ntawd thiab kho txhua qhov yuam kev ua ntej lub app mus txog tus neeg siv khoom. Kotlin muab kev nyab xeeb tag nrho, uas yog qhov tseem ceeb hauv kev txhim kho Android vim tias Android siv null los sawv cev tsis muaj nuj nqis.
Yog tias koj xav kawm Android app txhim kho, Kotlin yog qhov kev xaiv zoo tshaj plaws. Cov lus programming no yog cross-platform thiab khiav ntawm Java Virtual Machine, yog li nws yog sib xws nrog ob qho tib si Android thiab iOS platforms. Nws kuj yog yooj yim rau siv rau beginners. Cov lus tau txais kev txhawb los ntawm Google thiab muaj ntau yam kev kawm pub dawb los pab koj pib.
Kotlin yog ib hom lus niaj hnub ntaus ntawv uas siv los ntawm ntau tshaj 60% ntawm cov kws tshaj lij Android tsim tawm. Nws boosts productivity thiab developer txaus siab, thiab muaj cov yam ntxwv zoo li nullability, uas tiv thaiv NullPointerExceptions. Tsis tas li ntawd, apps sau hauv Kotlin tau pom tias yog 20% tsawg yuav poob. Kotlin yog qhov kev xaiv zoo rau cov neeg tsim khoom hauv Android, tshwj xeeb tshaj yog txij li Android Studio muaj kev txhawb nqa thawj zaug rau nws. Nws suav nrog cov cuab yeej built-in los hloov Java-raws li code rau hauv Kotlin.
Yog tias koj tab tom npaj tsim Android apps, Tej zaum koj yuav xav kawm Kotlin, hom lus nrov tshaj plaws ntawm GitHub. Kotlin yog Object-Oriented thiab Feature-Oriented programming lus. Nws tuaj yeem raug ntaus thiab siv los tsim JavaScript thiab Java Virtual Machine. Cov lus tau tsim los ntawm JetBrains, lub tuam txhab tom qab IntelliJ IDEA thiab Android Studio. Qhov tseeb version ntawm Kotlin tau tso tawm lub hli tas los, thiab nws suav nrog kev txhim kho rau LLVM, kev txhawb nqa rau ntau lub tshuab ua haujlwm, thiab binardata.
Lub ntsiab yog vim li cas Kotlin thiaj li nrov ntawm GitHub rau Android app creation yog tias nws yog ib tug ruaj khov programming lus uas yooj yim kawm.. Nws khiav ntawm Java Virtual Machine thiab tuaj yeem muab tso ua ke rau JavaScript-Quellcode. Cov neeg tsim khoom uas twb paub txog Java kuj tuaj yeem hloov mus rau Kotlin tau yooj yim.
Kotlin txhawb nqa Android Studio's Multiplatform Mobile plugin. Koj tuaj yeem yooj yim nruab qhov plugin no hauv koj qhov project Android Studio nrog ob peb clicks. Ib zaug ntsia, koj tuaj yeem pib tsim thiab sim koj cov apps mobile. Koj tuaj yeem siv lub plugin los ua cov ntawv thov hauv Android.
Kotlin/Native muab kev sib koom ua ke ntawm ob txoj kev nrog Swift thiab Objective-C cov tsev qiv ntawv. Qhov no txhais tau tias Kotlin code tuaj yeem xa mus rau Swift thiab Objective-C code nrog @objc exportation.
Yog tias koj tab tom nrhiav txoj hauv kev nrawm thiab yooj yim los tsim Android apps, Kotlin yog qhov kev daws teeb meem zoo tshaj plaws. Cov lus tshiab no yog Java-compatible backend programming lus uas tau qhia hauv 2011. Hos nws tsis yog li 'kuj’ as Java, nws tseem yog ib hom lus yooj yim heev los kawm. Nws pragnant syntax thiab yooj yim ntawm kev tswj xyuas ua rau nws yog ib qho kev xaiv nrov rau cov neeg tsim khoom.
Ib qho ntawm cov laj thawj uas Kotlin tau txais koob meej raws li cov lus xaiv los tsim Android apps yog tias nws tau txais kev pom zoo Google. Ntxiv thiab, Cov lus no muaj cov neeg koom siab loj tshaj plaws ntawm GitHub. Qhov no yog ib feem ntawm qhov tseeb tias Google ua nws ua 'thawj-chav lus’ xyoo tas los.
Cov neeg tsim khoom yuav tsum nyob twj ywm ntawm cov thev naus laus zis tshiab thiab paub txog lwm qhov chaw. JavaScript thiab ReactJS yog ob lub thev naus laus zis nrov, tab sis ntau tus thawj coj tau tsiv mus rau ReactJS. Txawm li cas los, Nws tuaj yeem nyuaj rau txheeb xyuas cov tsev qiv ntawv React.
Python yooj yim heev rau kev kawm thiab kev pab cuam hauv. Nws syntax yog prazise, thiab nws los nrog cov tsev qiv ntawv dav dav ntawm cov lej rau ntau yam haujlwm. Lwm qhov zoo ntawm Python yog tias nws yog dawb thiab qhib qhov chaw. Nws tuaj yeem siv tau rau hauv cov haujlwm ntawm lub cev, xws li Raspberry Pi.
Cov cuab yeej Android-Entwicklung ntxiv rau Android Studio kuj muaj. Cov cuab yeej Android-Ingenieur yog qhov qhib thiab pub dawb. Qee cov cuab yeej no tsis tshua muaj neeg nyiam, tab sis tseem qhib-qhov chaw thiab dawb. Tseem muaj BASIC, uas yog ib hom lus amateur-phooj ywg, yog li nws yog qhov zoo tshaj los pib nrog nws yog tias koj xav tau lub tswv yim sai. Txawm li cas los, rau ntau tshaj Android app creation, Nws yog qhov zoo tshaj los siv Application Builder, uas los nrog cov haujlwm tseem ceeb thiab cov ntsiab lus ib txwm muaj.
Cov neeg tsim tawm iOS tuaj yeem siv Swift. Thaum lub tsev qiv ntawv Cocoa Touch tseem zoo ib yam li cov hauv Objective-C, Swift muab kev sib cuam tshuam ntawm lub sijhawm thiab cov lus teb nrawm rau kev hloov pauv kev debugging. Cov lus yog qhib qhov chaw, uas txhais tau tias cov zej zog txhawb nqa nws heev.