Akohia te Papatono Taupānga Android me Java, Whāinga-C, Tere ranei

Kei te miharo pea koe he aha te rereketanga i waenga i a Java, Whāinga-C, me te tere. Pai, Ma tenei tuhinga e whakaatu ki a koe he mohiotanga mo enei reo. Ka ako hoki koe he aha te mea pai ake i tetahi atu. Mena kei te rapu koe ki te hanga i tetahi taupānga Android pai mo o kaihoko, Ko tenei tuhinga he panui-panui. Ko te waahanga o muri ka kapi kootlin me te whaainga-c, me pehea te whakataurite. Panuihia kia ako me pehea te awhina o enei reo ki te hanga i tetahi taupānga nui mo o kaihoko!

Java

Mena kei te whakaaro koe ki te mahi i tetahi taupānga Android, Me whai whakaaro koe ki te ako i te java. Ko Java te reo whakamaoritanga e whakamahia nuitia ana i te Android. Engari ki te hiahia koe ki te tiki i tetahi maaramatanga matatau, Ka taea hoki e koe te whakamahi i nga kete whare-hanga. Ko enei kete ka ako ki a koe me pehea te hanga i nga momo taupānga ma te whakamahi i te Android. Me te java, Ka taea e koe te whakamahi i tetahi emulator hei whakawhanake i te taupānga Android. Mena kaore koe i te mohio mehemea kei te ako koe i te java kaore ranei, Anei tetahi rarangi o etahi o nga pukapuka pai rawa atu i runga i te kaupapa Android.

Mena kei te rapu whakangungu mo te whakangungu a te kaiwhakawhanake propmed propter, He waahi pai hei tiimata ko te akoranga whanaketanga Android. I tua atu ki a Java, Ka ako ano koe mo te Studio Android rongonui. Ma tenei mahi whanaketanga taupānga koreutu ka ako ki a koe me pehea te hanga i nga taupānga Android me te tino taputapu whanaketanga taupānga noa. Ka ako koe i te java, Ko te reo tino rongonui mo te whanaketanga Android, me pehea te whakamahi i te kotlin, Ko tetahi o nga reo hou o Google.

Ina whiwhi koe i te mea ka mau i a Java, Ka rite koe ki te neke haere ki te taumata o muri, Ko tehea te kaupapa rorohiko a te phi. Ahakoa ko tenei akoranga e hiahia ana koe ki te ako me pehea te whakamahi i te Studio Android, E taunakitia ana kia ako koe i te java hei turanga mo te whanaketanga a te Android a meake nei. Ko te huinga maramara he maha nga rauemi, tae atu ki nga kaiarahi, akoranga, me nga huinga. Mena kei te mau tonu koe, Ka taea e koe te uiui tonu i nga paatai ​​mo te huinga maramara.

Kotlin

Ka tae mai ki te kaupapa rorohiko Android, Ko Java te reo whiriwhiri mo te nuinga o nga kaihanga. Heoi ano, He maha nga reo kaupapa hou e taea ai te whakahaere i runga i te miihini Virtual Virtual, tae atu ki a Kotlin. Ko tenei reo 100% hototahi ki Java, me te waehere i tuhia ki Kotlin kua tino whakawhiti katoa me te waehere Java. I hangaia ano te Syntax kia rite ki te rite ki te java. Mo tenei take, Kei te tere haere te Kotlin i waenga i te hapori Java.

Ahakoa tona rongonui, Ko tenei reo kaore ano kia pakeke ki te whakamahi i runga i ona ake. Mo tera, it is recommended that developers use the Android Studio or IntelliJ IDEA tools for their Android app programmieren. Kotlin is free, compact, me te ngawari ki te ako. The course is made up of a mix of practical knowledge, lab exercises, and hands-on learning. The course also covers all aspects of Android SDK.

The Kotlin language is a bytecode that is similar to Java, so it’s compatible with Android devices. You’ll need to restart Android Studio after installing Kotlin on your Android device. You’ll need to configure Android Studio so that it can run and understand the Kotlin code when you create a new project. When you first start out, you should choose the Empty Activity project type.

Whāinga-C

It is possible to make your Android apps in Objective-C, he reo kaha e taea ai te awhina i a koe ki te hanga i nga taupānga pai mo to taputapu. Ahakoa kaore i te kaha hei tere tere, He maamaa ake te ako me te tere o to taupānga. Ka taea e koe te ako ki te kaupapa i roto i te whaainga-C i te marama. Heoi ano, He mea nui kia mahara ko te ako tere ka whakawhiwhia e koe ki a koe mo te whaainga ako-c.

Tuatahi, Me mohio koe ki nga rereketanga i waenga i te iOS me te Android. Ko nga rereketanga i waenga i enei punaha whakahaere e rua e whakamarama ana i raro nei. Ko te rereketanga matua i waenga i enei waahanga e rua ko ta raatau hoahoa me o raatau mahi. Kaore pea koe e hiahia ki te whakawhanake i te taupānga taua mo nga tupapaku e rua, Kaore pea pea koe e hiahia kia rite ki to taupānga te ahua o te huarahi e rua mo nga punaha e rua. Kia pai ai te ahua o to taupānga i runga i nga punaha e rua, Me tino mohio koe ka whai koe i nga aratohu a te atanga tangata me nga aratohu hoahoa taputapu. Ahakoa e taea ana te hangarau ki te hanga i tetahi taupānga mo nga papaa e rua, Kaore i te tūtohutia.

Mena he timatanga koe me te hiahia ki te waihanga i tetahi papatono taketake i runga i te Android, Ka taea e koe te ako i te whaainga-C i roto i te waa poto. Mena he mohio koe mo Java, Ka taea e koe te whakauru tika i te waehere Java. Kore, Me ako koe i te reo hou. Ko te maarama pai ki te whaainga-C e tika ana kia angitu ai te hōtaka phi. He maha nga akoranga tuihono ka taea te awhina i a koe ki te ako i tenei reo.

Tere

Kua whakatauhia e koe te ako i te Programmierere phi me te tere. Engari kei hea koe e tiimata ana? Ma tenei tuhinga e hoatu ki a koe etahi tohu e awhina ana i a koe. Ahakoa ko tehea te reo whakamahere e ako ana koe, Ka hiahia koe ki te mohio ki nga ariā matua. Hei timata, Tangohia te taupānga-bakasten, He taputapu taputapu-hanga, me whai i nga tohutohu hei whakarite i tetahi kaupapa. Na, Ka pai koe ki to huarahi ki te hanga i te taupānga phi i te wa kaore i te waa.

Ahakoa ka taea e koe te ako tere me te awhina o nga akoranga, Ka pai ake pea koe ki te whakamahi i tetahi taputapu akoako-a-whare-a-whare ranei. Hei tauira, Ko te taupānga papaa tere he taputapu whai hua hei ako i te reo. He maha nga akoranga e taea ai e koe te arahi i a koe i te waa-taahiraa. I tua atu, Kei roto i te kaupapa te algorithms uaua ake, mahi, me nga tohutohu. Ka rite ki te painga taapiri, He koreutu ki te tango.

Mena kei te hiahia koe ki te whakamatau i te papatono tere me te kore e haumi ki tetahi taiao whanaketanga, Ka taea e koe te whakamatau ki te ako i te java i a koe ake. He maha nga akoranga koreutu i te ipurangi. He awhina enei taupānga me te ngawari ki te whakamahi, Ahakoa he nui ake te koi nui ake i a raatau i nga reo papatono. A, ki te hiahia koe ki te penapena moni, Ka taea e koe te whiriwhiri mo te taputapu hanga whare kostenpflichtig rite te hiahia. Ka taea hoki te tango i etahi akoranga koreutu, Ko te tikanga he nui ake te rahi ake i nga akoranga noa.

aho XML

Te reo tohu roa (XML) Ko te whakatakotoranga whanui i roto i te mahinga whanaketanga taupānga Android. Ko ona painga ko te mea he papa motuhake me te hoa kaiwhakamahi. Ma tenei tuhinga e whakamarama nga tikanga o te XML me pehea te whakamahi hei hanga i te XML-Zeichekette ngawari. I te waahanga tuatahi ka whakamarama i te XML-Form me te pehea e whakamahia ana i roto i nga taupānga Android.

Ko nga tuhinga XML he hanganga rakau. Kei ia tuhinga he waahanga pakiaka me nga mea maha o nga tamariki. Ko te Whakapuakanga XML e tautuhi ana i te putanga XML. Ka taea e nga tuhinga XML te whakauru i nga waahanga pakiaka me te maha o nga waahanga tamaiti. Hei tauira, he “taitara” Ka taea e te Wahanga te maha o nga aho. Mena he maha nga uara o te rereketanga, Ka taea te whakamahi i te whakamāramatanga aho ki te penapena i a raatau.

Ki te panui i nga raraunga mai i te XML-Zeichenketten, Me whakamahi e koe te tikanga hou e kiia ana ko AktiendandataxMLString. Tuatahi, Me panui koe i te aho-a-tuhi mai i te tūmau Tukutuku. Panuku, Me hanga e koe he aho-whaainga kei roto nga korero putea e pa ana. Ka tukuna tenei mea ki te huarahi onpostexec he aha aunoa.

Tikanga Huringa Ora

A, no te whakamahere i te tono phi, Me mohio koe ki te ariā o te koiora-methode, e taea ai te korero ko te 'koiora’ Tuhinga o mua. He rereke ki nga reo papatono c-I-C-I-C-IP, e whai ora noa iho, Ko nga tono phi e toru nga koiora koiora. Kei ia ake ano nga ahuatanga o ia ake, but they all work in similar ways. Ko te tikanga, Android app programming follows the following lifecycle:

Tuatahi, activities are the foundation of any Android app. Every screen is an activity, which means it must implement every lifecycle method to be effective. Activities should have a method called onCreate(), as this method is required to render content on the screen. The second method, onDestroy(), is called immediately before the activity is destroyed. There are various reasons why Android will destroy an activity.

OnPause() is a useful method to implement in an Android app. Ina okioki tetahi mahi, the system calls the onPause() tikanga. This method can be used to react to an activity being paused. It is also useful for interacting with users when an activity is paused. Heoi ano, you must note that onPause() must be called before you call onResume().

Patuiro

When debugging your Android app, Me mohio koe me pehea te uru atu ki te taputapu debug. Ka kitea e koe i roto i te matapihi taputapu i te taha matau, ranei ma te whiriwhiri i te tirohanga > Taupānga Matapihi> Tāhae. He tohu debug, ka taea te uru atu ma te paatene i te paatene Debug i te pae matapihi. Ko te matapihi Debug e whakaatu ana i te tukanga Android o naianei me ona rereke katoa. Ma te whakamahi i te paatene Debug ka taea e koe te tirotiro i nga karere hapa e tukuna ana e to taupānga.

Ina tuwhera te matapihi debug, Patohia te “Miro” ripa a ka haere ki te kaituku miro. Ko te matapihi Debug ka whakaatu i te papa putunga mo ia miro, Na ka taea e koe te tirotiro i nga uara o ia miro. Ka taea hoki e koe te paatohia i nga waahanga takitahi i te anga ki te whakatuwhera i te waehere rauemi. He maha nga huarahi hei whakarite i te huarahi e whakaatuhia ana i te matapihi Debugger. You can export stack frames as well as customize their presentation by reading the Debugger Window Frames guide.

If you have a tablet PC or a laptop, you can use the USB debugging feature of your Android device. To enable the USB debugging mode, go to Developer Options and then select “Debugging Mode.” Once you’ve enabled USB debugging, you can easily access advanced developer options like enabling USB debugging. To use USB debugging, make sure that you backup all important data before proceeding.