Android App Development: Mobile App Development & Java

            Android 5 or Lollipop represents the most revolutionary upgrade to the Android Operating System up to date.  It includes many exciting features along with cutting-edge technology for developers, new attractive features for users and in addition new API. The user interface used is the new Material Design UI and it has the ability to deploy lollipop on wearables, TV’s and in your own cars. 

An android’s most important policy is to give a whole new look and feel by the Material Design UI standards. This latest purpose is to provide Android applications a clean and simple form with spontaneous controls and simulations. Google talks about virtual ink and paper and this concept can be seen most clearly in the widget, the Card-View.

The common appearance of our app, controlling things like default background colors, text colors and sizes are governed by Android themes. All Android themes are highly configurable with just a few lines of code, which allows us to set a color scheme that is applied across the app and unlike its predecessors, to also change the color of the toolbar and the navigation bar with slight changes.

If you have a closer look at the above app, you will have noticed that when the emulator or the device is rotated through 90 degrees or 180 degrees, one or two options do not work or the system crashes for a few seconds. Firstly, the animation resets whenever the device is rotated. When a device running one of our apps is rotated into landscape orientation, it refers to the same XML file as it does in portrait mode. Often this works perfectly well.

There are a few useful apps that run on just one screen or in other words, just uses a single activity and the consumer or the developer, needs to find a way to switch from one activity to another and pass information from one system to the other. To put it in simple words each new activity will require its own a layout the function as per the specification but this is not the case in all situations where there are times where we want the same layout to be used but with different data and resources to save some memory space. 

Let us see how to form an effective template that can be used as a foundation for an in-app product. This comprises all the libraries and necessary packages, along with few useful helper classes. A very familiar process to us is including Google AdMob advertisements in our apps. Just like any other Android widget, an ad is in effect alternative View, and can be referenced and recognized. Let us take a look at in-app billing.

As the resources are limited, the GUI design is more challenging nowadays. Moreover, users have rigorous demands and expectations for an excellent experience. In determining the success of systems and applications on the market, interface design has become one of the important factors.

You will learn to create an application with multiple activities such as introduce the explicit and implicit trigger mechanisms of activities. An example of an application with parameters triggered by an activity in a different application, which helps us to understand the exchange mechanism for the activity’s parameters.

Java is a high-performance, secure and object-oriented language. It is one of the most popular programming languages used by Android. The learning outcome priority will always be the Java programming concept, followed by understanding the Android environment and game design principles.

This line of code defines the package that we named when we first created the project. On continuation, we will write more complex code that extents more than one file. All the code files we create will need the package they belong to, clearly defined like the previous line of code, at the top. The code doesn't actually do anything in our game. 

The term, "Java syntax," could be considered as technical or jargon. The Java syntax is the way we put together the language elements of Java in order to produce code that works in the Java/Dalvik virtual machine. The Java syntax is a combination of the words we use and the formation of those words into sentence like structures. 

The starting point of the game is shown below. Just take a look at the screenshot. On designing our own games, drawing sketches of the in-game objects and mechanics of the game will be a precious part of the design process. Here, on taking a look at the end result, we can cheat a bit.

Installation of Android Development Tools (ADT), has many versions of the Android framework which were deployed on mobile platforms and many of handsets are supporting it. Developers need tools to provide access to many devices. OS-specific Application Programming Interfaces (APIs) are available on the Android platform.

This segment is mainly focusing on the Android Security architecture. In this segment we will cover some minimum details about security and the tips and tricks will give the information from an application.

Common mistakes while developing applications is unintentionally leaving application components exposed which cause delays will right away or after the application runs for a few days. Focusing on how to prevent the components from being exposed and accessible to other apps. Also, see how to restrict access to custom permissions if sharing data is required plays a vital role in the efficient functioning of the app on any given device.

The process of learning how something works and developing ways to make use of or abuse, this information is generally known as Reverse Engineering.

This segment focus is mainly on the high-level support for the various devices which was compiled specifically by the system architecture

                         A few things to be kept in mind as a junior developer is that you should be aware of the activity since the activity is considered to be the screen that performs a particular action in the Android application. The junior developer uses the activity to login or to modify the user profiles on the activity app which acts to be the screen that interacts with the user using an interactive user interface and that is presented as a window.

            There is a boom in the mobile applications market had it has been calculated more than a billion smartphones will be sold out in the year 2015 that is voice the number of personal computers so each business needs a mobile application and therefore the demand for senior engineers, UX designers, and QA testers are all in huge demand.  there is a far more demand for jobs than the offers,  and the situation is even more optimistic for senior developers.