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Dagbasoke ohun elo Android jẹ ọna nla lati ni owo lakoko ti o kọ awọn ins ati ita ti ede siseto tuntun kan. Orisirisi awọn ede oriṣiriṣi lo wa ti o le lo lati ṣẹda awọn ohun elo fun awọn ẹrọ Android, pẹlu Java, Kotlin, Swift, Idi-C, ati siwaju sii. Yiyan ede ti o tọ jẹ pataki ni iyọrisi awọn abajade to dara julọ, nitorina o ṣe pataki lati ṣe iwadi diẹ.
Java jẹ ọkan ninu awọn ede olokiki julọ ti a lo ninu idagbasoke ohun elo alagbeka. Ibaramu gbogbo agbaye tumọ si pe o le ṣiṣẹ lori fere gbogbo ẹrọ ati ẹrọ ṣiṣe. Iseda ọfẹ rẹ tun jẹ ki o jẹ yiyan pipe fun awọn olupilẹṣẹ ti ko ni iriri. O jẹ ede orisun ṣiṣi ati pe o nilo idoko-owo kekere nikan fun idagbasoke ohun elo alagbeka. Ọpọlọpọ awọn olupilẹṣẹ jade fun aṣayan ọfẹ yii lati ṣe agbekalẹ awọn ohun elo fun ọpọlọpọ awọn iru ẹrọ.
Ede siseto Java jẹ ede idi gbogbogbo ti o lagbara. O ti ṣẹda ninu 1995 nipasẹ Sun Microsystems ati pe o jẹ ohun ini nipasẹ Oracle. O ṣe atilẹyin awọn iru data atijo ati siseto ti o da lori ohun. Botilẹjẹpe sintasi rẹ jọ C/C ++, Java ni ipele ti o ga julọ ti abstraction. Jubẹlọ, Koodu Java nigbagbogbo ni kikọ ni irisi awọn kilasi ati awọn nkan. Ede siseto Java jẹ apakan bọtini ti idagbasoke ohun elo Android. Awọn olupilẹṣẹ le lo awọn ile-ikawe boṣewa Java lati ṣẹda awọn ohun elo to rọ ati igbẹkẹle.
Ọkan ninu awọn ọna ti o dara julọ lati kọ ẹkọ Java fun idagbasoke ohun elo Android ni lati ṣe nẹtiwọọki pẹlu awọn idagbasoke miiran. Didapọ mọ agbegbe oluṣe idagbasoke yoo gba ọ laaye lati pin data ati awọn oye pẹlu awọn olupolowo miiran. Ni ọna yi, iwọ yoo ni nẹtiwọọki ti eniyan lati yipada si nigbati o di lori iṣẹ akanṣe kan. They’ll be able to help you with problems and help you develop your Java app development skills.
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. Nitorina na, 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. Ti o ba ti mọ Java tẹlẹ, you can easily integrate Kotlin into your IDE.
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. Sibẹsibẹ, 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. Ni afikun, it can be cross-compiled for use on other platforms, making it a versatile programming language.
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. Jubẹlọ, 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, Idi-C, and 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.
Swift also features C++ API compatibility, which can be beneficial if you want to build a cross-platform app. Jubẹlọ, Swift also supports Android Autolayout, which makes creating UIs easier. Ni afikun si eyi, it also provides options to use third-party frameworks. With all of these features, Swift can be a great tool for Android app development.
Ti o ba n gbero lati ṣe agbekalẹ ohun elo Android kan, then you should consider using OpenGL. This programming language allows you to create games and 3D graphics. It supports a wide range of screen sizes. You can also use OpenGL to create camera views and apply projection. If you are not sure how to use OpenGL, you can read more about it in the developer’s guide.
OpenGL is widely implemented across a variety of hardware platforms, which makes it easier for developers to create platforms-independent applications. Ni afikun, OpenGL is not affected by hardware acceleration limitations. This means that you can develop applications that work seamlessly on different platforms, pẹlu Android. Eyi jẹ afikun pataki fun awọn olupilẹṣẹ Android. Ni afikun, OpenGL jẹ atilẹyin nipasẹ ọpọlọpọ awọn ẹrọ alagbeka. Lilo imọ-ẹrọ yii yoo jẹ ki awọn ohun elo rẹ rọ diẹ sii.
OpenGL nlo iru awọn shaders meji, ti a npe ni fatesi shaders ati ajẹkù shaders. Shader fatesi n ṣe ilana data geometry ni ọna rasterized, nigba ti ajẹkù shader kapa sojurigindin ati awọ alaye. Awọn oriṣi meji ti shaders lẹhinna ṣiṣẹ papọ lati ṣe ohun kikọ 3D kan loju iboju.
Awọn API iṣẹ orisun ipo Android n pese ọna ti o rọrun lati kọ awọn ohun elo ti o mọ ipo. Lilo awọn iṣẹ wọnyi, o le ṣafikun awọn ẹya bii geofencing ati idanimọ iṣẹ si app rẹ. Awọn API Ibi ti o da nọmba awọn paramita pada, bii ijinna, išedede, ati iyara, si app rẹ.
Ohun elo ti o da lori ipo le funni ni ọpọlọpọ awọn anfani, lati awọn irin-ajo foju ati awọn irinṣẹ Otito Augmented si titọpa awọn ayanfẹ olumulo. Awọn ohun elo wọnyi tun funni ni data awọn oniwun iṣowo nipa awọn alabara wọn’ iwa, eyi ti o le ran wọn lati se agbekale wọn tita nwon.Mirza. Ni afikun, awọn lw wọnyi le pese isọpọ maapu ati awọn ipoidojuko GPS.
Awọn API iṣẹ ti o da lori ipo fun awọn olupilẹṣẹ ohun elo Android n pese awọn aṣayan meji si awọn olupilẹṣẹ: ọna afọwọṣe lati tẹ data ipo sii sinu ohun elo kan, tabi iṣẹ kan ti o wa awọn olumulo laifọwọyi nipa lilo alaye GPS. Laini itanran wa laarin lilo awọn ọna mejeeji wọnyi, nitorina awọn olupilẹṣẹ yẹ ki o yan aṣayan ti o baamu awọn iwulo wọn dara julọ.
O le ṣẹda awọn paati pupọ pẹlu Dagger android app idagbasoke ilana. Lẹhinna, iwọ yoo nilo lati ṣalaye wọn ni ọna ti o yẹ. Fun apere, o le ṣẹda LoginViewModel ati Iṣẹ-ṣiṣe Wọle kan. Awọn paati mejeeji yoo ni iṣẹ ṣiṣe kanna, ṣugbọn yoo nilo awọn kilasi abẹlẹ oriṣiriṣi. O le lo apẹrẹ yii lati jẹ ki ohun elo rẹ ni iwọn diẹ sii ati daradara. Sibẹsibẹ, o nilo lati mọ diẹ ninu awọn idiwọn.
Ọkan ninu awọn aila-nfani ti lilo awọn asọye ipari ni pe wọn le ṣafihan awọn n jo iranti. Niwọn igba ti paati ti o ni iwọn gbọdọ wa ni iranti nigbati o ba jẹ itasi sinu iṣẹ kan, yoo wa nibẹ titi ti ohun elo yoo fi parun. Ti a ba tun wo lo, apẹẹrẹ alailẹgbẹ ti UserRepository yoo wa ni iranti titi ti ohun elo yoo fi parun. Lati yago fun iru awọn iṣoro bẹ, o le kede ọpọ abẹrẹ() awọn ọna ninu rẹ paati. Awọn ọna wọnyi le jẹ orukọ ohunkohun ṣugbọn o gbọdọ gba ohun kan ti o fẹ lati lọsi.
Dagger tun ṣe iṣeduro abẹrẹ to dara ti awọn aaye nipa lilo @Abẹrẹ. Eyi ṣe pataki pupọ nitori ilana naa le ma ṣe awari awọn igbẹkẹle rẹ ti ko ba rii wọn ni awọn aaye to tọ. Fun apẹẹrẹ, ti o ba ti a paati ni o ni ọpọ instances ti a kilasi, Dagger yoo jabọ aṣiṣe akoko-akojọ ti ko ba le rii wọn.
Awọn olupilẹṣẹ Android le lo ReactiveX lati jẹ ki awọn ohun elo wọn ṣiṣẹ. Iru siseto yii ngbanilaaye awọn olupilẹṣẹ lati ṣakoso awọn iṣẹ nẹtiwọọki lori okun abẹlẹ dipo okun UI. O tun ṣee ṣe lati pato okun kan lati lo fun iṣẹ abẹlẹ ati ọkan lọtọ fun awọn imudojuiwọn wiwo olumulo. Lati ṣe eyi, a nilo lati ṣẹda aṣa Observable ohun nipa lilo awọn ṣẹda oniṣẹ. Nkan yii gbọdọ ṣe imuse wiwo Observable.LoriSubscribe ati ṣakoso onNext, Aṣiṣe, ati awọn ọna ti a ti pari.
ReactiveX is a programming language that uses observers and observables to create an object that emits and consumes data. Observables are simple objects that represent various data. They are instances of the Observable class and have a large number of static methods. One of the easiest ways to create an observable is with the just operator, which will create a simple observable. You can also add an observer to it to make the object emit data. This will cause a Hello message to appear in the Android Studio logcat window.
ReactiveX operators can also create, transform, and perform operations on observables. Fun apere, the operator from can create an observable from a list or array of Integer objects.