A’ taghadh a’ chànan cheart gus App Android a leasachadh

Developing an Android app is a great way to make money while you learn the ins and outs of a new programming language. There are many different types of languages that you can use to create apps for Android devices, Java nam measg, Kotlin, Sguab, Amas-C, agus tuilleadh. Choosing the right language is essential in achieving the best results, so it’s important to do some research.

Java

Java is one of the most popular languages used in mobile app development. Its universal compatibility means it can run on nearly every device and operating system. Its free nature also makes it an ideal choice for developers who lack experience. It is an open source language and requires only a small investment for mobile app development. Many developers opt for this free option to develop apps for various platforms.

The Java programming language is a powerful general-purpose language. It was created in 1995 by Sun Microsystems and is now owned by Oracle. It supports primitive data types and object-oriented programming. Although its syntax resembles C/C++, Java has a much higher level of abstraction. A bharrachd air sin, Tha còd Java an-còmhnaidh air a sgrìobhadh ann an cruth chlasaichean agus nithean. The Java programming language is a key part of Android app development. Developers can use Java’s standard libraries to create flexible and reliable apps.

One of the best ways to learn Java for Android app development is to network with other developers. Joining a developer community will allow you to share data and insights with other developers. San dòigh seo, you’ll have a network of people to turn to when you’re stuck on a certain project. They’ll be able to help you with problems and help you develop your Java app development skills.

Kotlin

Kotlin for Android app development is a language that can help you build Android apps. With this book, you’ll learn the basics of Kotlin. It has a large set of code listings and walks you through building two Android apps. The book is written by Peter Sommerhoff and will be helpful if you’re new to Kotlin or are a beginner.

Kotlin is a programming language that is similar to Java, but has its own unique features. Mar thoradh, it can offer greater productivity for developers. The language is easy to learn and readable, which means less boilerplate code. This will result in a faster development time and lower maintenance costs.

If you want to develop Android apps quickly, Kotlin is an excellent choice. Several software packages already support Kotlin. Ma tha thu eòlach air Java mu thràth, you can easily integrate Kotlin into your IDE.

Amas-C

If you want to create apps for both iOS and Android, you can use Objective-C. This is the primary programming language for the Mac OS X, but it is also useful for developing games and other applications for other platforms. It is a superset of C and includes many features, such as object-oriented capabilities and a dynamic runtime. Objective-C inherits the C language’s primitive types, but adds syntax for class definitions and object graph management. It also provides dynamic typing and defers many responsibilities to the runtime.

Objective-C is a powerful and popular programming language. It has a high-level of performance and is easy to learn. Ge-tà, it is not as simple to use as Swift. Apple recently introduced Swift as the successor to Objective-C, which is a cross-platform coding language for iOS and Android. It has many features that make it easier to create apps with intuitive interfaces.

Objective-C is a very popular programming language for mobile and web development. It provides many benefits, including a concise and clear code syntax. It also compiles to JavaScript and native code, and is compatible with Java. This makes it a popular choice for Android app developers. A bharrachd air, it can be cross-compiled for use on other platforms, making it a versatile programming language.

Sguab

Using Swift to develop your Android app can be beneficial for the speed and performance of your app. Swift is a powerful programming language developed by Apple. It aims to give developers more flexibility in implementing their creative ideas. It supports all Apple devices and is faster than Objective-C. Its popularity is growing, and more developers are integrating Swift code into their apps. A bharrachd air sin, Swift apps are safer to run than those written in Objective-C.

The first step in learning to develop an Android app is to learn the programming language. The languages used in building an app include Java, Amas-C, agus Swift. If you have some programming experience, you can choose any of these languages and use them to create a custom app. You can also try hybride apps with HTML5 or JavaScript.

Tha Swift cuideachd a’ nochdadh co-chòrdalachd C ++ API, a dh’ fhaodadh a bhith buannachdail ma tha thu airson app tar-àrd-ùrlar a thogail. A bharrachd air sin, Bidh Swift cuideachd a’ toirt taic do Android Autolayout, a tha ga dhèanamh nas fhasa UI a chruthachadh. A bharrachd air seo, tha e cuideachd a’ toirt seachad roghainnean airson frèaman treas-phàrtaidh a chleachdadh. Leis na feartan sin uile, Faodaidh Swift a bhith na inneal math airson leasachadh app Android.

OpenGL

Ma tha thu an dùil app Android a leasachadh, an uairsin bu chòir dhut beachdachadh air OpenGL a chleachdadh. Leigidh an cànan prògramadh seo leat geamannan agus grafaigean 3D a chruthachadh. Bidh e a’ toirt taic do raon farsaing de mheudan sgrion. Faodaidh tu cuideachd OpenGL a chleachdadh gus seallaidhean camara a chruthachadh agus ro-mheasadh a chuir an sàs. Mura h-eil thu cinnteach ciamar a chleachdas tu OpenGL, faodaidh tu barrachd a leughadh mu dheidhinn ann an stiùireadh an leasaiche.

Tha OpenGL air a chuir an gnìomh gu farsaing thar grunn àrd-ùrlaran bathar-cruaidh, a tha ga dhèanamh nas fhasa do luchd-leasachaidh tagraidhean àrd-ùrlaran a chruthachadh. A bharrachd air, Chan eil crìochan luathachadh bathar-cruaidh a’ toirt buaidh air OpenGL. Tha seo a’ ciallachadh gun urrainn dhut tagraidhean a leasachadh a bhios ag obair gun fhiosta air diofar àrd-ùrlaran, Android nam measg. Tha seo na bhuannachd mhòr dha luchd-leasachaidh Android. A bharrachd air, Tha OpenGL a’ faighinn taic bhon mhòr-chuid de dh’ innealan gluasadach. Le bhith a’ cleachdadh an teicneòlais seo nì na h-aplacaidean agad nas sùbailte.

Bidh OpenGL a’ cleachdadh dà sheòrsa shaders, ris an canar vertex shaders agus chriomagan shaders. Bidh an vertex shader a’ pròiseasadh dàta geoimeatraidh ann an dòigh rasterized, fhad ‘s a bhios an sgàilear criomag a’ làimhseachadh fiosrachadh inneach is dath. Bidh an dà sheòrsa sgàilearan an uairsin ag obair còmhla gus caractar 3D a thoirt seachad air an sgrion.

APIan seirbheis stèidhichte air àite

Tha na APIan seirbheis stèidhichte air àite Android a’ toirt seachad dòigh shìmplidh air tagraidhean a tha mothachail air àite a thogail. A 'cleachdadh nan seirbheisean sin, faodaidh tu feartan leithid geofencing agus aithneachadh gnìomhachd a chur ris an aplacaid agad. Bidh na APIan Suidheachadh a’ tilleadh grunn pharaimearan, leithid astar, cruinneas, agus luaths, don aplacaid agad.

Faodaidh aplacaid stèidhichte air àite mòran bhuannachdan a thabhann, bho chuairtean brìgheil agus innealan Augmented Reality gu bhith a’ cumail sùil air roghainnean luchd-cleachdaidh. Bidh na tagraidhean sin cuideachd a’ tabhann dàta do luchd-seilbh gnìomhachais mun luchd-ceannach aca’ giùlan, a chuidicheas iad gus an ro-innleachd margaidheachd aca a leasachadh. A bharrachd air, faodaidh na h-aplacaidean sin amalachadh mapa agus co-chomharran GPS a thoirt seachad.

Bheir APIan seirbheis stèidhichte air àite airson luchd-leasachaidh app Android dà roghainn do luchd-leasachaidh: dòigh làimhe airson dàta àite a chuir a-steach gu tagradh, no seirbheis a bhios a’ lorg luchd-cleachdaidh gu fèin-ghluasadach le bhith a’ cleachdadh an fhiosrachaidh GPS. Tha deagh loidhne eadar cleachdadh an dà dhòigh sin, mar sin bu chòir do luchd-leasachaidh an roghainn as fheàrr a fhreagras air na feumalachdan aca a thaghadh.

biodag

Faodaidh tu grunn phàirtean a chruthachadh leis an app Dagger android leasachadh frèam. An uair sin, feumaidh tu am mìneachadh anns an dòigh iomchaidh. Mar eisimpleir, Dh'fhaodadh tu LoginViewModel agus LoginActivity a chruthachadh. Bidh an aon ghnìomhachd aig an dà cho-phàirt, ach bidh feum air diofar chlasaichean bunaiteach. Faodaidh tu am pàtran seo a chleachdadh gus an tagradh agad a dhèanamh nas scalable agus nas èifeachdaiche. Ge-tà, feumaidh tu a bhith mothachail air cuid de chuingealachaidhean.

Is e aon de na h-eas-bhuannachdan bho bhith a’ cleachdadh notaichean farsaingeachd gun urrainn dhaibh aoidion cuimhne a thoirt a-steach. Leis gum feum co-phàirt scoped a bhith mar chuimhneachan nuair a thèid a stealladh a-steach do ghnìomhachd, fanaidh e ann gus an tèid an tagradh a sgrios. Air an làimh eile, bidh eisimpleir sònraichte de UserRepository fhathast na chuimhne gus an tèid an tagradh a sgrios. Gus casg a chur air duilgheadasan mar sin, faodaidh tu ioma-stealladh fhoillseachadh() dòighean anns a’ cho-phàirt agad. Faodar na dòighean sin ainmeachadh mar rud sam bith ach feumaidh iad rud fhaighinn a tha thu airson a chuir a-steach.

Bidh biodag cuideachd a’ gealltainn stealladh ceart de raointean a’ cleachdadh @Inject. Tha seo glè chudromach oir is dòcha nach lorg am frèam na eisimeileachd agad mura lorg e iad anns na h-àiteachan ceart. Mar eisimpleir, ma tha grunn eisimpleirean de chlas aig co-phàirt, Tilgidh biodag mearachd ùine cruinneachaidh mura lorg e iad.

ReactiveX/RxAndroid

Faodaidh luchd-leasachaidh Android ReactiveX a chleachdadh gus na h-aplacaidean aca a dhèanamh ath-ghnìomhach. Leigidh an seòrsa prògramadh seo le luchd-leasachaidh gnìomhachd lìonra a làimhseachadh air snàithlean cùil an àite an t-snàthainn UI. Tha e comasach cuideachd snàithlean a shònrachadh airson a chleachdadh airson cùl-obair agus tè air leth airson ùrachaidhean eadar-aghaidh luchd-cleachdaidh. Gus seo a dhèanamh, feumaidh sinn rud àbhaisteach a ghabhas amharc a chruthachadh a’ cleachdadh a’ ghnìomhaiche cruthachaidh. Feumaidh an nì seo an eadar-aghaidh Observable.OnSubscribe a chur an gnìomh agus smachd a chumail air an onNext, onMearachd, agus air dòighean crìochnaichte.

Is e cànan prògramadh a th’ ann an ReactiveX a bhios a’ cleachdadh luchd-amhairc agus nithean faicsinneach gus nì a chruthachadh a bhios a’ sgaoileadh agus ag ithe dàta.. Is e nithean sìmplidh a tha a’ riochdachadh diofar dhàta a th’ ann an nithean amharc. Tha iad nan eisimpleirean den chlas Observable agus tha àireamh mhòr de dhòighean statach aca. Is e aon de na dòighean as fhasa sealladh a chruthachadh leis a’ ghnìomhaiche dìreach, a chruthaicheas sealladh sìmplidh. Faodaidh tu cuideachd neach-amhairc a chuir ris gus toirt air an nì dàta a chuir a-mach. Bidh seo ag adhbhrachadh gun nochd teachdaireachd Hello ann an uinneag logcat Android Studio.

Faodaidh gnìomhaichean ReactiveX cruthachadh cuideachd, cruth-atharraich, agus gnìomhan a dhèanamh air nithean faicsinneach. Mar eisimpleir, faodaidh an gnìomhaiche sealladh a chruthachadh bho liosta no sreath de stuthan Integer.