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Fundamentals of Android App Development for Beginners

Do you know what draws a user towards an app? The cool and exciting features of an application!

Without any doubt, it is the application which makes a phone smart and due to the benefits offered by these benefits, our way of functioning has changed drastically.

Now if you are that enthusiast who wants to contribute more to this transformation by taking an Android app development course, here are the 5 Android fundamentals that you should now –

Get Familiar with the Language

The two significant programming languages used in the Android app development are Java and XML. Getting completely familiar with these programming languages is extremely necessary and also a prerequisite to developing an app. A few fundamentals included in the Java programming language are as follows –

  • Objects & classes
  • Packages
  • Strings & numbers, generics,
  • Inheritance & interfaces
  • Concurrency
  • Collections

If you have the perfect understanding of Java as well as XML, then the development of an Android app becomes super-easy.

Knowing the right Development tools and Environment

Another important thing to know here before you start developing your app is that you should get familiar with the automation tools and the integrated development environment. Utilizing the Android app studio IDE will help you with learning the basics along with many other things, thereby, letting you improve your code. Furthermore, getting familiar with Apache Ant, Apache Maven, and Gradle is highly recommended as they actively help you in managing your builds.

It is likewise critical that you acquaint yourself with source control devices and ideas. Get familiar with the git and after that make a git-source store (by making a record on Bitbucket or GitHub). To comprehend the essential ideas and terms of how the stage works, you can utilize the Git Pocket Guide.

Understanding the Application Components

The essential building blocks of Android app development are none other than the application components. Every component comes with a different point through which the system can enter your app. Also, each of them exists as its own entity, playing a specific role. A few of them depend on each other but not all of them prove to be the actual entry points.

Five different types of app components serve a distinct purpose which explains how it is created and destroyed –

Activities:

This component shows a single screen with a user interface. The activities work together to form a user experience in the app but each one of them is independent.

Services:

This component does not provide a user interface but runs in the background to perform actions for remote processes.

Content providers:

This one is utilized for the management of a shared set of app data. Via this component, the data stored by you in the file system or on the web can be queried, even modified. It is extremely useful when it comes to writing and reading data which is not shared and is private to your app.

Broadcast Receivers:

This reacts to framework wide communicate declarations. The greater part of the communicate beneficiaries begin from the framework, and despite the fact that they don't show a UI, they can make a status bar notice that cautions the client when a communicate occasion happens. For the most part, it is a door to different segments and it just does negligible work.

Activating components:

These are the synchronous message which refers to intent activates 3 of the 4 components – activities, services, and broadcast receivers. Intents even put together the individual components at runtime, no matter the component belongs to your application or not.

Recognition over Fragmentations, Android Application, Loaders, and Tasks

Android, a fragmented market, has many operating system versions and different devices. Make a note of the fact that if your device offers support to more devices/versions then it will surely need more maintenance/testing as well as the related costs. Even the opposite stands as truth. There is also a need for appropriate fonts, layouts & assets which will ensure that the experiences in the various screen features are given. A wide array of Android supported sensors or UI facilities should also be considered. Each Android app has an application class, more than one activity, and fragments.

Now and again, you may have services for background assignments that should run consistently yet on different occasions you may not. In the event that you need to convey an incredible and smooth UI, ensure that the string is never blocked. Subsequently, the long activities (calculations, I/O, arrange, and so on.) should all run no concurrently in the background (for the most part on an alternate string of execution). This is the reason it is critical to get familiar with the Java language concurrency facilities.

Make the correct choice over the Required Tools

For Android app development, all you need is a Mac or a Windows PC or any kind of Linux. Also, you need is an Eclipse, an ADT Plugin, and an Android SDK. To set up your development environment, you can go through the installation guide available on Google. It even helps with the documentation of the required things. Android has some parameters that you ought to think about when composing an Android application. Some of them include:

  • Execution and responsiveness: You ought to dependably react to client contribution inside five seconds generally or else the working framework will ANR you. (ANR-application not responding)
  • Slacks of more than 100ms will be seen by the clients: As referenced over, the UI string ought to never be blocked on the grounds that it is just one.
  • Restricted assets: Wake-locks (a system that powers the gadget to complete a specific thing in spite of the proposal to put the gadget to rest by the battery chief) ought to be utilized sparingly. Don't superfluously poll hardware (for example GPS or accelerometer) since it will rapidly run down the battery.


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