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The cool features that come along with apps are what draw the interests of users. Apps make phones “smart” and through their benefits, apps have drastically transformed how we function today.

Adept programmers are getting busy, designing and building apps of their own and embedding them with favorable features. If you’re one of those enthusiasts, here are 5 Android fundamentals that you should know before you begin programming an Android app.

Java and XML are the two main programming languages used in Android App development. Knowledge and mastery over these programming languages are, therefore, prerequisites to developing an Android app. Some of the fundamentals of the Java programming language include:

Objects & classes
Inheritance & interfaces
Strings & numbers, generics,
Proper understanding of Java and XML will help you build/develop a more robust and elegant android app.

It is very important that you familiarize yourself with the build automation tools as well as the integrated development environment before you start developing your app. You can use Android app studio IDE or the Eclipse for the tools; they will help you learn the basics and many other things that will help improve your code. You can learn Apache Maven, Apache Ant and Gradle as they provide a powerful set of tools to help in managing your builds.

It is also important that you familiarize yourself with source control tools and concepts. Learn the git and then create a git-source repository (by creating an account on Bitbucket or GitHub). To understand the basic concepts and terms of how the platform operates, you can use the Git Pocket Guide.

Application components are the essential building blocks of Android app development. Each of the components is a different point by which the system can enter your app. Although each one of them exists as its own entity and plays a specific role, there are some which depend on each other, and not all of them are actual entry points.

There are five different types of app components each serving a distinct purpose with a distinct life cycle which defines how it is created and destroyed. They include:

Activities: This is a component that represents a single screen with a user interface (for instance, an email app may have one activity showing a list of new emails, another activity composing emails, and another one reading emails). Activities work together to form a cohesive user experience in the app. However, each one of them is independent.

Services: This is a component which runs in the background to perform work for remote processes or long-running operations. It does not provide user interface (for instance it might play music in the background while the user is in a different app).

Content providers: This is the component that manages a shared set of app data. Through this component, the data that you store either in the file system, on the web, a SQLite database can be queried or even modified (as long as the content provider allows it). This component is also useful for writing and reading data that is not shared and is private to your app.

Broadcast receivers: This is the component that responds to system-wide broadcast announcements. Most of the broadcast receivers originate from the system, and although they do not display a user interface, they can create a status bar notification that alerts the user when a broadcast event occurs. Generally, it is a gateway to the other components and it only does minimal work.

Activating components: A synchronous message referred to as intent activates 3 of the 4 components (i.e. services, activities and broadcast receivers). Intents also bind individual components to one another at runtime whether the component belongs to your app or not.

Android is a fragmented market with many different devices and operating system versions. Note that, if your device supports more devices and/or versions it will definitely require more maintenance and testing as well as the related costs. The vice-versa is also true. You also require appropriate fonts, assets and layouts that will help in ensuring that the best possible experiences in the various screen characteristics are given. You should also consider the array of android supported sensors or UI facilities. All android apps have an application class, one or more activities and one or more fragments.

Sometimes, you may have services for background tasks that should run continuously but other times you may not. If you want to deliver a great and smooth user interface, always ensure that the thread is never blocked. Therefore, the long operations (computations, I/O, network, etc.) should all be run asynchronously in the background (mainly on a different thread of execution). This is why it is important to learn the Java language concurrency facilities.

The simple tools that you need for Android app development are just a Mac or Windows PC, any type of Linux, and Eclipse, the ADT Plug in, and the Android SDK—all of which are free. You can go through the installation guide on Google to learn how to set up your development environment; it provides documentation of everything needed. Android has some unique parameters that you should consider when writing an Android app. Some of them include:

Performance and responsiveness: You should always respond to user input within five seconds otherwise the operating system will ANR you. (ANR-application not responding – the only option that you will have is to force close your app.)

Lags of more than 100ms will be noticed by the users: As mentioned above, the UI thread should never be blocked because it is only one.

Limited resources: Wake-locks (mechanism that forces the device to do a certain thing despite the recommendation to put the device to sleep by the battery manager) should be used sparingly. Do not unnecessarily poll hardware (e.g. GPS or accelerometer) because it will quickly run down the battery.

Check out our video that takes you through the introduction to Android Application Development to get a taste of what the course entails.

77% of Americans today own a smartphone, and apps are where the majority of their time is spent. In fact, in 2017, 197 billion apps were downloaded, ensuring that a career as an Android App Developer is a stable one with lots of opportunity for growth. There’s a lot to learn, so consider getting started with Simplilearn’s Google-authorized Certified Android App Developer training course. You’ll learn to master Android fundamentals along with the other skills you need with hands-on experience, developing six trending applications during the course. The course is aligned with the Associate Android Developer (AAD) Exam conducted by Google. Happy app-developing!

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Android App Developm ...
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Every new web development project begins with a sense of optimism that everything will move forward without a glitch. Of course, even developers from the best web application development company can tell you that things will happen, which don’t go according to plan. The good news is that steps can be taken from day one, and throughout the development process, to increase the odds of smooth sailing.

Want to set your self up for success? Make sure to follow these 8 web development best practices:
Understand the big picture. Some developers love to code so much that they skip the first step — planning — and end up writing code over and over again. First ask, what’s the overall intention, or bigger picture of the project? This leads to understanding priorities and not getting bogged in the insignificant details that may steer you off course.
Start with the user experience. Paper or a mock-up are cheap to change compared to the cost of scrapping a project your users don’t want to use. A good rule of thumb to remember is that 70 percent of development efforts should be spent on research and design, and then the final 30 percent on programming. By understanding the potential user, and creating a user-friendly design, the development phase will significantly less complex!
Write smarter, not more. Don’t make something too clever. Every line of code you write should have a definite and necessary purpose. Overproducing code is the figurative equivalent to asking for bugs. Each piece of code should solve a problem or provide a feature necessary to the function of the page.
Don’t reinvent the wheel. Imagine you’re building a house. Would you rather start with a bare piece of land, or a nearly constructed house where all you can focus on laying carpet, painting and installing appliances and landscaping? In application development, a framework provides a structure in which you can build on instead of starting from scratch. Not only does it save time, but it helps less experienced developers build better quality applications and reduces potential for errors.
Be nimble to avoid pitfalls. Lean, Agile, Scrum, XP — you pick. Don’t let a huge feature hold your timeline hostage and aim to be “always shippable.” In other words, instead of hitting a grand-slam home run, swing for hundreds of singles and doubles. Development is a process of continuous improvement, and incremental updates to a working project creates less bugs than waiting until it’s built out in full.
Consider the future — but not too much. Don’t over-engineer for some theoretical future need, but conversely don’t let today’s demands close off any future innovation. It’s inevitable that the user interface (UI) you design today will be outdated a few years, or even a few months from now. Design and develop the backend in a way that you can adjust the UI without having to do a full-fledged overhaul, which can be extremely costly. Also expect to make incremental updates, whether it be slight designs to font to adding a completely new feature.
Write testable code. Testing is an essential tool in the toolbox of any serious developer. However, some code is written in a way that it’s hard, or even impossible, to test. Make sure to follow-up testing best practices and methods to write clean, easy-to-read code.
Decide what you’re optimizing for. This depends on the project, of course. Is this code intended to last a while, or is it just a quick prototype? If the former, then the answer is probably not that we are optimizing for highest performance or utmost reliability (yes, we shouldn’t crash, but we don’t have to spend months proving that it’s resilient to the ridiculously improbable). Instead, optimize for code readability and extensibility. The next person that works on your code needs to understand it even if you have forgotten — and that might be you, coming back to it months later.
Finally, keep practicing, growing and improving! The more experience and insight you have, the fewer bugs will arise in your coding and the more likely you’ll be able to get through development without major issues. Read programming books, blog and publications to maximize your knowledge base. Don’t be too hard on yourself if things go wrong — simply learn from previous mistakes. Good luck, and happy coding!

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