Android, to iOS difference, is mounted on many devices with different resolutions. To get an app with many downloads are necessary, indeed obligatory, adapting graphics f...
Before proceeding with the other OnPage factors, we will now go on a small excursion to the competition analysis. These analyzes of your competitors at Google to the top...
As we know Android is the operating system that occupies the greater part of the market for mobile applications, so as Android developer it more logical is that you know...
Kotlin is an object-oriented language but introduces features in functional languages that allow us to create a clearer and more expressive code. One of the characteristi...
To display a jpg file, png etc. We have in the Canvas class a method called drawBitmap. Issue: Display the contents of a jpg file on the screen knowing it has a size of 2...
Here are three small exercises to deepen what you’ve just learned. First, we build a small password-protected page. Here’s an example of how to check if form...
If condition as an expression in Kotlin language. In Kotlin there exists the possibility that the conditional if structure returns a value, a characteristic not common to...
The search engine optimization , or SEO (Search Engine Optimization) means a sum of actions to optimize a website aim to achieve better rankings in Google or other search...
Once we start the Android Studio environment the main dialog appears: We chose the option “Start a New Android Studio project” Now a series of windows will ap...
Another way to run an mp3 file is through the built-in Android player. This application plays all formats supported by Android and has an interface that will be familiar...
Android organizes the visual components (Button, EditText, TextView etc.) on the screen using containers called Layout. So far we have not worried how to organize a scree...
The PageRank (PR) is the most important reason why Google is today the most successful search engine in English-speaking and European countries. The PageRank is a rating...
We have seen the creation of objects of the Button class, now we will see another class very similar to the previous called ImageButton that has the same philosophy of ha...
The Android platform gives us several facilities for permanent data storage (i.e they are not deleted when the application is shut down or closed) Depending on the type o...
The OffPage analysis of a web page highlights the external links (backlinks) and other aspects, which can not be found on the site itself. In addition to the backlinks, w...
Layouts, organize our views The prerequisite for this tutorial is the knowledge of layouts resources, allowing us to describe our views in Android. Let’s start to s...
If you want to transfer values in PHP from one page to the next, you often have to resort to the two special variables $ _GET and $ _POST. For example, you want to transf...
PHP is a server-side scripting language, which means you need a web server to run PHP programs or the PHP scripts. Luckily, installing is easier than it sounds. With XAMP...
The optimization according to OffPage criteria deals with all optimization measures that are not correlated directly with the website itself, but are intended to increase...
The meta-data plays a very important role in search engine optimization because they are located within an HTML document in the header area, so they are the first thing a...
Issue: Paint the white background and draw a series of rectangles with different styles. 1 – We created a project called: Proyecto036 We delete the TextView that au...
Problem: Make a program that allows the loading of two integers in controls of type EditText (Number). Display within the same EditText controls messages that request loa...
Comparison operators in PHP allow you to compare values and variables. For example, they can be used to check whether a variable has a specific value, for example. operat...
The Kotlin language allows certain operators to be overloaded and to act in different ways according to the object that is applied. Operator overloading should be used as...
The email function of PHP is very handy because it allows us to send form data or create entire newsletter scripts. You can also use this procedure for a guestbook, for e...
A common memory leak in Android Although the mobile phone memory is increasing, but Android in order to achieve different applications running isolation, and will not aff...
As explained in point 10, hub pages form the pivotal point within the internal page structure of a web page. By accumulating and evenly distributing Linkjuice within the...
Using ViewStub on Android improves layout performance. In Android development, Android ViewStub is the technology we have to contact to display. Often, as more and more c...
The meta title of a web page, which is displayed in the title bar of the browser window, has always been one of the most important ranking factors within the OnPage searc...
What are the advantages of using Kotlin to develop your application? – Functional programming and object-oriented programming – Inference of types (as in Java...
