Qhov zoo tshaj plaws Programming Languages ​​rau Android Programming

Hauv tsab xov xwm no kuv yuav muab qee cov lus qhia rau koj txog cov lus programming zoo tshaj plaws rau Android programmierung, thiab vim li cas Python zoo dua Java. Kuv kuj tseem yuav tham txog Android Emulator Intel HAXM, yog ib qho tseem ceeb tshaj plaws software platforms rau hauv programmierung. Cia peb pib. Kuv vam tias koj txaus siab rau tsab xov xwm no. Yog tias koj muaj lus nug lossis lus hais txog tsab xov xwm, thov tso tawm. Kuv yuav zoo siab teb lawv.

XML-Parsing Methode rau XML-Daten tsimQuotesFromXMLString()

Siv lub 'createQuotesFromXMLString()’ muaj nuj nqi hauv C# qhov kev pab cuam los khaws thiab tso saib cov ntaub ntawv sib raug zoo yog qhov yooj yim. Nws xa rov qab cov npe nkag uas sawv cev rau txhua tus ncej hauv XML pub. Txoj kev no ua cov hlua XML thiab xa rov qab cov npe ntawm cov ntawv tseem ceeb hauv daim ntawv HTML markup.

Koj yuav tsum xub hu rau chav kawm uas siv txoj kev parsing. Thawj feem ntawm txoj kev no yog xaiv cov teb uas koj xav kom cais tawm. Yog tias koj xaiv qhov “nkag” tag, tus parser yuav rho tawm cov ntaub ntawv rau lub cim npe no thiab ib qho cim npe. Qhov thib ob ntawm chav kawm, readFeed(), ua cov ntaub ntawv XML thiab xa cov npe ntawm cov ntaub ntawv rho tawm.

Lub DOM API muab ib txoj hauv kev los txheeb xyuas cov ntaub ntawv XML. Cov chav kawm no muaj cov chav kawm thiab cov txheej txheem los mus, txheej txheem, thiab khaws cov ntaub ntawv. Lub DOM API muab cov qauv APIs sib koom ua ke los tswj DOM, nrog rau kev muaj peev xwm los ua haujlwm tshawb nrhiav thiab hla cov ntawv ntoo. Hauv kev sib tham sib siv, koj tuaj yeem tsim ib qho qauv ntawm cov ntaub ntawv XML siv DOM API.

Python yog ib hom lus programming zoo dua rau hauv qhov programming

Yog tias koj txaus siab los tsim cov ntawv thov Android, Tej zaum koj yuav xav xav txog kev kawm Python ua hom lus programming. Python apps muaj kev nco ntau dua, tab sis cov cuab yeej thib peb tuaj yeem hloov lawv mus rau Android Pob. Thiab vim tias qhov kev thov nce ntxiv rau Android apps, Nws yog qhov zoo kom paub ntau dua ib hom lus programming kom ntseeg tau tias koj ua haujlwm nrog cov kev daws teeb meem zoo tshaj plaws. Cov kab lus hauv qab no yuav tham txog qee qhov laj thawj vim li cas Python yog hom lus programming zoo dua rau kev txhim kho daim ntawv thov Android.

Nws yooj yim kawm Python, thiab nws cov koob meej yog loj hlob. Rau ib qho, ntau lub npe loj xws li Uber thiab Spotify siv cov lus. Thiab nws yog dav siv los ntawm developers, uas ua rau nws yooj yim rau beginners kawm. Tsis tas li ntawd, cov neeg tsim khoom yuav pom nws yooj yim dua los tsim cov ntawv thov Android siv Python vim tias nws tso cai rau cov neeg tsim khoom siv cov qauv los tswj cov ntaub ntawv loj.. Vim nws muaj koob meej, python tau dhau los ua hom lus nrov tshaj plaws rau Android apps, tshwj xeeb tshaj yog rau cov lag luam thiab pib ua lag luam.

Lwm qhov txiaj ntsig zoo ntawm Python yog nws txoj kev sib raug zoo. Nws tuaj yeem khiav ntawm ntau lub tshuab ua haujlwm thiab lub platforms. Koj tuaj yeem ntxiv thiab tshem tawm cov modules thiab ua haujlwm tom qab tsis tas yuav rov sau lub app. Thiab Python tseem muab koj lub peev xwm los sau cov ntawv xeem thiab saib xyuas app tsim hauv lub sijhawm. Qhov no yog ib qho laj thawj tseem ceeb vim li cas Python tau dhau los ua neeg nyiam ntawm cov neeg tsim khoom. Thiab kawg tab sis tsis tsawg, nws yooj yim kawm thiab siv.

Qhov zoo ntawm Python tshaj Java muaj ntau yam. Python yooj yim kawm, thiab nws ua rau coding sai dua. Python kuj ua tau zoo dua, thiab tuaj yeem pab koj tsim cov ntawv thov mobile sai dua Java. Txawm hais tias koj tab tom nrhiav rau pab pawg txhim kho Android, koj tuaj yeem ntiav python programmer zoo tshaj plaws los pab koj tsim lub zoo meej app rau koj cov neeg siv khoom. Thiab vim tias Android developers nyiam siv Python ntau dua li lwm yam lus, koj yuav muaj ntau txoj kev xaiv los ntawm.

Java yog hom lus programming nrov tshaj plaws rau Android programmierung

Yog tias koj xav kawm Android programming, koj yuav tsum kawm Java. Muaj ntau qhov zoo ntawm cov lus programming no, tab sis nws muaj nws drawbacks thiab. Kab lus no piav qhia qee qhov zoo ntawm Kotlin. Txawm tias nws cov kev txwv, Java tau siv dav thiab yog cov lus siv feem ntau siv rau Android. Kab lus no qhia txog qee yam ntawm nws cov txiaj ntsig thiab qhov tsis zoo. Nws kuj yog qhov kev xaiv zoo rau Android programming yog tias koj xav sau Android apps.

Kotlin yog ib hom lus qhib qhov programming uas khiav ntawm Java Virtual Machine. Nws yog ib qho yooj yim kawm thiab muaj cov ntsiab lus luv luv. Ntau tus neeg tsim tawm hauv xov tooj ntawd nyiam nws rau Java vim nws yooj yim ntawm kev siv thiab siv tau. Nws kuj muaj cov yam ntxwv kev ruaj ntseg zoo dua thiab yog qhov sib txawv ntawm lub platform. Kotlin yog lwm txoj hauv kev nrov rau Java rau Android kev txhim kho. Nws yog dawb, yooj yim siv, thiab cross-platform tau tshaj.

Java yog cov lus programming nrov tshaj plaws rau kev txhim kho hauv Android, yog li nws yog qhov kev xaiv zoo yog tias koj tab tom nrhiav kom pib sai. Txawm li cas los, yog tias koj tab tom nrhiav ib hom lus uas yooj yim kawm thiab nrawm, C# yog qhov kev xaiv zoo. C ++ yog lwm hom lus sib tham sib tham, thiab yog siv los tsim mobile games. Nws cov tsev qiv ntawv muab kev tswj hwm kev nco zoo dua thiab tsawg lub cim xeeb tawm dua li Java.

Android programming hauv Java yog qhov chaw zoo tshaj plaws rau cov pib programmers. Txawm li cas los, Java tej zaum yuav nyuaj dhau rau cov pib tshiab, yog li nws yog qhov zoo tshaj los kawm ntau hom lus programming. Kotlin yog ib hom lus sib txawv, thiab khiav ntawm Java Virtual Machine. Cov txiaj ntsig ntawm kev kawm Android nrog Java tsis yog pom tseeb xwb. Koj yuav kawm ntxiv txog hom lus, tab sis kuj tau txais cov kev paub uas koj xav tau pib ua Android apps.

C# yog hom lus hais txog hom lus uas yog tsim los ntawm Microsoft. Nws yog hom lus taw qhia thiab ua haujlwm ntawm Common Language Runtime. Qhov no txhais tau tias nws ua haujlwm ntawm txhua lub platform, suav nrog Android. Nws yog ib qho kev xaiv zoo tshaj plaws rau Android developers, tab sis nws yuav tsum tau muaj kev paub ntau xyoo los kawm cov lus zoo. Txawm tias nws muaj koob meej, Java yog ib hom lus nyuaj kawm, thiab nws tsis tuaj nrog ntau yam kev pab.

Android Emulator Intel HAXM yog ib qho tseem ceeb software platform rau Android programming

Raws li Android developers tau thov kev txhim kho hauv kev ua haujlwm ntawm Android emulator, Intel tau los nrog kev daws teeb meem. Tus tshiab Intel HAXM tsav tsheb yog tsim los txhim kho kev ua tau zoo ntawm Android emulator loj heev. Nrog nws qhov kev hloov kho thib peb, nws muaj peev xwm hloov tsis tau lub laptops rau hauv qhov chaw tsim kho siv tau. Nyeem rau kom paub seb koj tuaj yeem siv qhov zoo ntawm tus tsav tsheb tshiab.

Koj tuaj yeem khiav lub emulator ntawm lub PC nrog 64-ntsis processor thiab lub webcam uas muaj peev xwm ntes tau 720p ntas.. Qee cov emulators qhia koj kom pab kho vajtse nrawm, uas tuaj yeem txhawb kev ua haujlwm ntawm lub tshuab virtual. Rau Intel systems, HAXM version 7.2.0 yog yuav tsum tau. AMD systems xav tau AMD-V kev txhawb nqa thiab Windows Hypervisor Platform API.

Thaum siv lub emulator, koj yuav tsum xyuas kom meej tias nws txhawb API Qib 17 thiab tau nruab rau ntawm lub tshuab host. Rau x86 systems, HAXM kuj txhawb GPU emulation. GPU emulation, lwm yam hu ua “GPU acceleration”, siv GPU hauv lub tshuab ua haujlwm kom nrawm nrawm ntawm emulator. Yog tias koj xav tau lub emulator sai dua, GPU emulation yog qhov kev xaiv zoo.

Ib qho Android emulator tuaj yeem simulate Android ntaus ntawv ntawm koj lub computer thiab ua raws li tag nrho nws cov peev xwm. Nws tuaj yeem simulate txhua yam ntawm lub cuab yeej suav nrog kev hu xov tooj thiab cov ntawv xov xwm, network ceev, kev sib hloov, thiab lwm yam hardware sensors. Qhov no tuaj yeem ua kom ceev cov ntaub ntawv xa mus. Koj tuaj yeem siv lub emulator los sim koj lub app hauv cov ntsiab lus tiag. Muaj ib qho emulator tseem muab sijhawm rau koj los sim nrog lub cuab yeej hauv cov ntsiab lus tsis muaj qhov cuam tshuam ntawm kev hloov kho qhov tiag..

Koj tuaj yeem siv lub emulator los kaw suab lossis video. Los ntawm rub cov ntaub ntawv mus rau lub emulator lub vijtsam, lawv muab tso rau hauv ib phau ntawv hu ua /sdcard/Download. Cov ntaub ntawv tuaj yeem pom nrog Device File Explorer lossis Files lossis Downloads app ntawm koj lub cuab yeej. Yog tias koj tsis muaj lub computer rau nruab Android Studio, Koj tuaj yeem khiav koj lub app ntawm emulator hloov.