Otu esi eji Java hazie ngwa Android

If you’ve ever wondered how to develop an Android app, ịnọghị naanị gị. There are a ton of resources available on the Internet, and Android apps programming is no exception. N'isiokwu a, you’ll learn about Android app development basics, the ShareActionProvider, Nkwụghachi azụ nke ndụ okirikiri, na ndị ọzọ. You’ll also learn about the difference between Native Apps and Progressive Web Apps.

Java

If you’ve ever wondered how to program Android apps, the answer is quite simple – you need to learn Java! Android apps have two components: an Activity and a View. The activity defines the graphical upperflache and functionality of the app, while the view contains Java code that determines what happens when a button is pressed. Both components run on Android-compatible devices. Nkuzi a ga-enyere gị aka ịmụta ka esi eji Java hazie ngwa Android!

Akwụkwọ a na-akụziri gị ntọala Java maka mmepe Android, nke dị mkpa ma ọ bụrụ na ịchọrọ ịmepụta ngwa ọkachamara. Ọ na-amalite na gam akporo-Richtlinies maka imepụta ihe nrụnye onye ọrụ, wee mechie na ngwa na-egosi ngụ oge. Ị ga-eji Java mepụta ngwa ahụ, na ị ga-enweta ọtụtụ ahụmahụ na usoro ahụ! Ọ juputara na ndụmọdụ na-enye aka iji mee ka ngwa gị gaa nke ọma, kwa.

Usoro ịmụ ka esi eme mmemme android ngwa na-amalite site na ịdenye aha dị ka onye nrụpụta na Google. Ị ga-akwụ ụgwọ otu oge maka ọrụ a, ma mgbe nke ahụ gasịrị, ị nwere ike ịnye ngwa gị maka nbudata ma ọ bụ ọrịre, na Google na-ewere ndokwa maka ire ere ọ bụla. Mmemme gam akporo chọrọ iji gam akporo SDK, na Java bụ nnukwu ngwá ọrụ maka nke a. Ị nwere ike ịmụta Java ngwa ngwa site n'ịgbaso usoro ndị a.

ShareActionProvider

The ShareActionProvider for Android apps programmieren na-enye ụzọ maka ndị mmepe iji gosipụta data ngwaahịa na ngwa ha. API na-enye ndị mmepe ohere ịgbakwunye klas ShareActionActivity na ShareActionProvider na ọrụ gam akporo ha. API na-enyekwa ikike izipu data na ngwa ndị ọzọ. Iji jiri ShareActionProvider maka ngwa gam akporo, buru ụzọ mepụta ọrụ gam akporo wee jikọọ ya na PC gị site na ADB. Nke a ga-emepụta ọrụ ọhụrụ nke ị nwere ike ịwụnye na ngwaọrụ ejikọrọ. Ozugbo ịmepụtara ọrụ ọhụrụ gị, ị nwere ike ịmalite itinye koodu.

Ị nwere ike iji ShareActionProvider maka ngwa gam akporo iji gosi akara ngosi nkekọrịta na ActionBar ngwa gị. The ShareActionProvider will create a view for the user to see when they are sharing data. It also shows a submenu that lists various sharing activities. It is possible to set the intent for these actions. You can also add an action to the ActionBar if you want the user to see a message that informs them of the problem.

ShareActionProvider allows developers to delegate responsibility for item appearance and behavior. It allows developers to build investment apps that let users share their content with other apps. ShareActionProvider allows developers to include links to ShareActionProvider’s website within their apps. With ShareActionProvider for Android apps programmieren

Nkwụghachi azụ nke ndụ okirikiri

To implement Activity Lifecycle Callbacks in your Android app, you must know how to use the android API. Sistemu nwere ike ịkpọ onStart na onStop ụzọ ihe karịrị otu oge n'ime ndụ ọrụ. N'oge a, ọrụ ahụ ga-agbanwe site na anya gaa na nzuzo, ọzọ n'etiti onCreate na onStop. Ka ịhụ mgbe arụrụ arụrụ arụ, lelee ozi logcat. Ọ bụrụ na ịnweghị ike ịchọta usoro ị na-achọ, ị ga-atụle ịgbatị API.

Na android, ị ga-akpọkukarị naStart() ịbanye ọrụ n'ime steeti nọ n'ọrụ. Ọ bụrụ na mmemme ahụ dị n'azụ, na kwụsịtụ() a ga-akpọ. N'otu aka ahụ, n'kwụsị() a na-akpọ mgbe emechiri ihe omume ahụ. A na-eji oku oku abụọ ahụ mee ka akụrụngwa nweere onwe ya yana iji rụchaa ọrụ ọ bụla ọzọ na-ewe oge. Android emejuputakwala nkwa na onStop() a na-akpọ usoro.

The android lifecycle na-ekpughere ngwa site na callback otu ọrụ. Nkwụghachi azụ ndị a na-eso ụdị “tojupụtara” ma yie ka ọ na-eme n'usoro enweghị ọkwa. Ha na-ahụkwa ihe ndị a ga-edozirịrị na ọkwa nke ọ bụla. Ka iji nke ọma na-eme ihe omume Lifecycle Callbacks, ị kwesịrị ị na-eji NativeActivity ma ọ bụ native_app_glue. Enwere ọtụtụ ihe atụ nke abụọ ahụ.

Ngwa ala ala vs ngwa weebụ na-aga n'ihu

Otu n'ime isi ihe dị iche n'etiti ngwa Weebụ na-aga n'ihu (PWA) na Ngwa Native bụ ikpo okwu ogbugbu ha. Mgbe a na-emepụta ngwa ọdịnala ka ọ na-agba ọsọ na ngwaọrụ OS, Ejiri teknụzụ webụ rụọ PWAs. Ha na-agba ọsọ na ihe nchọgharị, yabụ enwere ike ịmalite ngwa ngwa na ọnụ ala. N'adịghị ka ngwa ala, Otú ọ dị, ha achọghị nkwado ụlọ ahịa ngwa. Enwere ike imepụta ha ma malite ngwa ngwa karịa ngwa ọdịnala, mana onye nrụpụta kwesịrị iwulite ụdị abụọ ahụ iche.

Na mgbakwunye na ndị a dị iche iche, usoro mmepe na-ewe karịa maka ngwa ala. Ngwa ala nna na-ewekarị ogologo oge iji mepụta PWAs, mana ha na-anabatakarị nke ọma. N'ihi na ha ga-agafe usoro nyocha, Ngwa ọdịdị siri ike ka mwepụta ma a ga-enyocharịrị ya. Ngwa ala nwekwara obere batrị karịa PWA. Na mgbakwunye, ha dị mfe idowe karịa PWAs. Ngwa ala nwekwara ọrụ nbudata nzọụkwụ abụọ, na-eme ka ọ dịkwuo mfe maka ndị mmepe ịgbanwe ọdịnaya na-enweghị ịnyeghachi ọrụ ahụ.

N'izugbe, Ngwa ala bụ ọkacha mmasị maka ndị mmepe n'ihi na ha nwere ike ịnweta atụmatụ ndị ọzọ nke ngwaọrụ ahụ. Ewubere ngwa ndị a site na iji otu asụsụ mmemme ma ahaziri ka ọ rụọ ọrụ na ngwaọrụ ahụ. Ngwa ala na-enwekwa ntụkwasị obi yana nchekwa karịa ndị otu PWA ha. N'ihi ya, ha dị nchebe karịa ndị ibe ha, na arụmọrụ ha ka mma. Yabụ kedu nke ka mma? Gụkwuo ka ịmata ya!

Ịmepụta ngwa gam akporo chọrọ mmepesumgebung

Tupu ịmalite itinye koodu ngwa android, ọ dị mkpa ịghọta akụkụ dị iche iche nke ikpo okwu Android na ụdị asụsụ mmemme dị iche iche ejiri. Android bụ ikpo okwu na-ekewa nke ukwuu nke nwere ụdị ngwaọrụ dị iche iche na sistemụ arụmọrụ. Ngwaọrụ ọ bụla nwere ikike ikike pụrụ iche, na ngwa ọ bụla ga-ekwupụta ikike ndị a na koodu ngwa site na ihe ikike ojiji na gam akporo:njirimara ikike.

Ka ịmalite, Ngwa gam akporo na-ekwupụta atụmatụ ngwaike na ngwanrọ ọ ga-eji, yana ọba akwụkwọ API ọ ga-eji. Ngwa gam akporo gam akporo gụnyere akara ngosi, aha maka aha klas tozuru oke nke subclass ya, na akara nke ga-ahụ onye ọrụ. A na-akpọ akụkụ ndị a akụrụngwa na koodu nke ngwa gam akporo. Site n'iji ihe ndị a eme ihe, enwere ike ịhazi ngwa ahụ maka nhazi ngwaọrụ dị iche iche.

Ịmụta ịhazi ngwa android abụghị egwuregwu ụmụaka

Ọnụ ọgụgụ nke ngwaọrụ gam akporo na-arụ ọrụ dị egwu. N'ezie, enwere 2.6 ijeri ngwaọrụ n'ụwa niile, na-eme ka ọrụ nke ịmepụta ngwa dị ka ihe na-adịghị mma. Kotlin, asụsụ mmemme ọgbara ọhụrụ maka gam akporo, akwadoro maka syntax ya na njirimara nchekwa koodu. Ị nwere ike ịmụta Kotlin online n'efu ma ọ bụ debanye aha na mmemme klaasị maka nkuzi na-eduzi.

Ezigbo onye oge mbụ nwere ike ịmalite site n'ịmụ ihe ndị bụ isi site na iji nkuzi. Ọmụmaatụ, Oge elekere – Ngwa Android nke Google bụ ebe dị mma ịmalite. Ọ na-akụzi ụkpụrụ ndị bụ́ isi, mana ọ naghị elekwasị anya n'asụsụ mmemme ọ bụla. N'agbanyeghị asụsụ ị họọrọ, ị ga-amụta maka usoro data, mgbanwe, na loops. Nke a na-enyere gị aka iwulite ngwa dị mgbagwoju anya ngwa ngwa.