Android and iOS are the 2 greatest mobile operating systems available and organizations frequently need to have their applications accessible on both platforms to contact a bigger group of audience. For that, they need to pick if they need to create 2 separate “local” applications or utilize a cross-platform system.
Writing a native application implies that you utilize the language and development tools for a specific operating system — Android or iOS — and afterward write code that will just keep running on this one platform. If you need to have the equivalent application accessible on the other operating system as well, you need to rewrite it from scratch in that language. Obviously, this can be very costly and tedious, particularly when it requires a different group of developers.
Cross-platform frameworks like Ionic, Xamarin and React Native let you compose a solitary code base that deals with both operating systems. I would prefer not to delve into the subtleties here about how they work, yet every one of them have drawbacks like more terrible performance, less accessible highlights, security issues and a progressively unpleasant and problem prone development process.
Here are some topics that I think are important for Android App Development in 2021:
- Most importantly, you should have a fundamental information of Java language for Android Development. I have taken in Java language from the Head-First Java book.
- Take a course or any book on Android application advancement with which you are agreeable. Being alright with the course or the book is incredibly significant. When you take the course or read the book, consistently apply that on an example application. I intend to state that assemble something on whatever you read.
Here we are going to discuss the practical guide to learn the android development:
You will be happy to realize that you can begin your Android Tablet Application Development on both of the accompanying operating systems −
- Microsoft Windows XP or later version.
- Macintosh OS X 10.5.8 or later version with Intel chip.
- Linux including GNU C Library 2.7 or later.
Second point is that all the expected tools to create Android applications are uninhibitedly accessible and can be downloaded from the Web. Following is the list of software’s you will require before you begin your Android application programming.
- Java JDK5 or later version
- Android Studio
Here the last two components which are optional and if you are chipping away at Windows machine, then these components makes your life simple while doing Java based application development.
Set-up Java Development Kit (JDK)
Here you can download the latest version of Java JDK from Oracle’s Java web page − Java SE Downloads. You will discover instructions for introducing JDK in downloaded files, adhere to the offered instructions to install and configure the setup. At long last set PATH and JAVA_HOME environment variables to allude to the directory that contains java and javac, commonly java_install_dir/container and java_install_dir respectively.
Android IDEs
There are such a large number of modern Technologies that are accessible to create android applications, the well-known technologies, which are overwhelmingly utilizing tools as given below:
- Android Studio
- Eclipse IDE(Deprecated)
Android operating system is a stack of software components which is generally separated into five areas and four principal layers as given below.
Linux Kernel- This gives a degree of abstraction between the device hardware and it contains all the fundamental hardware drivers like camera, keypad, show and so forth.
Libraries- Over Linux kernel there is a lot of libraries including open-source Web browser engine WebKit, understood library libc, SQLite database which is a helpful vault for capacity and sharing of use information, libraries to play and record sound and video, SSL libraries in charge of Internet security and so on.
Android libraries – This class incorporates those Java-based libraries that are explicit to Android development.
Android Runtime – This is the third segment of the architecture and accessible on the second layer from the bottom. This segment gives a key component called Dalvik Virtual Machine which is a sort of Java Virtual Machine exceptionally designed and optimized for Android.
Application Framework – The Application Framework layer gives numerous higher-level services to applications as Java classes. Application developers are permitted to utilize these services in their applications.
Applications-
You will discover all the Android application at the top layer. Instances of such applications are Contacts Books, Browser, Games and so on.
Application components are the basic building blocks of an Android application. These parts are approximately coupled by the application manifest file AndroidManifest.xml that portrays every component of the application and how they associate. While learning mobile development, you have advised about two cable modems. But what is it?
Activities
An activity speaks to a single screen with a client interface, in-short Activity performs actions on the screen.
Services
A service is a part that keeps running out of sight to perform long-running tasks.
Broadcast Receivers
Broadcast Receivers basically react to broadcast messages from different applications or from the system.
Content Providers
A content provider component supplies information from one application to others on request.
