Solutions and tutorials for IT&C development
In this post we will see what are the basics for developing an Android mobile application that has multiple windows or activities. To do that, we need to know how to create and display a new form, window or activity (for the rest of the post we will use the Android vocabulary and call it […]
Read More →Behind any window or form in the Android mobile application there is an Activity instance. In order to develop a mobile application with multiple windows you must create, for each display, a new class that extends Activity class. In this post we will see how to create a new Activity programmatically or using the Manifest […]
Read More →This article describes different methods of changing a QR code in Photoshop that allow to insert a logo, image or text. The custom or branded QR code will be read correctly despite the modification. The QR (Quick Response code, Denso Barcode, ISO/IEC18004) code represents a two-dimensional code bar, initially used by industry, but widely used […]
Read More →Android mobile applications are relying on user interfaces composed on dialog windows, visual controls, 2D graphics and other multimedia elements for efficiency and usability. The Android platforms allows programmers to use two methods to design user interfaces: procedural or declarative. In this post we develop a simple Android mobile applications that will help to make […]
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The Android tutorial covers all important concepts that will allow a new programmer to learn how to develop mobile applications for the Android platform. The tutorial is written from a programmer perspective and dives after few topics into simple and do-by-example applications which are easy to follow. Despite the apparently simplicity, each topic highlights important […]
Read More →The Bouncy Castle Crypto API for Java provides a lightweight cryptography API that is an alternative to the standard Sun Java Cryptographic Architecture (JCA) and Java Cryptographic Extension (JCE) bundled in the JDK. The API can be used in J2ME MIDlet applications or in other Java applications. The Bouncy Castle lightweight cryptographic API can be […]
Read More →When processing binary values it is very difficult to read or to display them because any printing function generates a String value. The problem with this approach is that not all byte values can be interpreted as a printable char (i.e. the 0 binary value represents the NUL symbol; for more details check ASCII Codes […]
Read More →The Bouncy Castle Crypto API for Java provides a lightweight cryptography API that works with everything from the J2ME to the JDK 1.6 platform and also a provider for the Java Cryptography Extension JCE (provides an implementation for JCE 1.2.1) and the Java Cryptography Architecture, JCA. The API provides cryptographic functions for Java JDK 1.1 […]
Read More →In this article we will see how to use the Eclipse IDE and the ADT (Android Development Toolkit) Plugin for Eclipse to create a very simple Android mobile application, the classic Hello World !. Despite its simplicity, the application just prints a message on the screen, its is very important to understand it, because its […]
Read More →In order to understand the Android application architecture you need some basic knowledge regarding Android applications key concepts. Understanding these elements will allow you to control: application components application lifecycle application resources In this post are described all these key concepts in order to highlight their role, utility and importance. Other posts will describe in more […]
Read More →Android is an open source software toolkit created by Google and Open Handset Alliance. Initially developed for mobile phones, it has become a major application platform for a wide range of mobile devices. The scope of this post is to summarize the steps needed to set the development environment and to start learning and developing […]
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