Lesson 4: RadioGroup and RadioButton Controls with example
The goal of this concept is to practice implementing a program that requires RadioButton type controls to select an activity. We will learn how to group a set of RadioBut...
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Lesson1: Installing tools to program for Android with Kotlin
Download tools needed to program for Android with Android Studio and Kotlin language 1 – First we must install the Java compiler and the virtual machine. These tool...
Read more Lesson 48: Black-Hat Methods -Website SEO Tutorial
Search engine optimization is designed to optimize your own website to achieve better rankings in the search results. Due to the increasingly aggressive politics of exclu...
Read more 26 – Audio playback (file from internet) in Kotlin
Now let’s see the steps to play a file stored on an internet server. Issue: Provide a button labeled “Play from internet”, then when you press play the...
Read more Lesson 2: Installation of Kotlin using IntelliJ IDEA
Kotlin is a fairly new programming language developed by JetBrains and lately is taking flight thanks among other things like being the second programming language offici...
Read more Introduction to Android layouts and all the components.
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...
Read more Lesson 45: Passive link Building – Website SEO Tutorial
Passive link Building is also called in today’s search engine optimization, content marketing. In doing so, good content is created, which is subsequently advertise...
Read more Features of java programming language
Main features of java Features of java programming language. Java has many effective features, attracting programmers, the most important are the following: 1. Simple an...
Read more Several useful new features in Android Studio 2.2
Android Studio 2.2 preview provides several new toys, very useful, as follows: Espresso Test Recorder Dependencies Management APK analyzer View the merged sources for And...
Read more 23 Functions: parameters and data return type array
We have seen the objective of putting functions into a program and that they can receive data by means of parameters and return a data. The parameters of a function can b...
Read more Lesson 17: Competitor Analysis – Website SEO Tutorial
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...
Read more PHP Lesson 17 – How to write files with example in PHP
To be able to write to text files, PHP has the function file_put_contents ($ filename, $ data), As the first argument, the function expects the file name, as second the d...
Read more Lesson: 15 – Store(Save) data in a text file on an SD card
In the previous concept, we saw how to create and read a text file in the internal memory of the Android team. In some situations, it might be useful to store the data on...
Read more Lesson 17: Functions with data return in Kotlin Language
Functions with data return in Kotlin Language. We saw that a function is defined by a name and that it can receive data by means of its parameters. Parameters are the way...
Read more Lesson 20: Meta data (Information) – Website SEO Tutorial
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...
Read more Lesson 19 – Functions with parameters with default value in kotlin
In Kotlin you can define parameters and assign them a data in the same header of the function. Then when we call the function we can or do not send a value to the paramet...
Read more Lesson 14 – PHP for loop Example
Similar to the while loop, the for loop can be used to execute statements as long as a particular condition is met. The syntax of the for loop is as follows: <?Php for...
Read more Lesson 24: The Robots.txt – Website SEO Tutorial
The robots.txt file is located in the root directory of a webserver, or in the root directory of a webspace, and is used to give crawlers and bots instructions on how to...
Read more Lesson 7: ListView Control (with a list of String) with examples
The ListView control, unlike the Spinner that closes after selecting an element, remains visible to several elements (used when displaying a list of similar elements). In...
Read more Lesson 15: WordPress MultiSite – Website SEO Tutorial
Multisite networks under WordPress have the great advantage that in this way several different pages within a domain can be conveniently managed from a single back-end. T...
Read more Lesson 40: Access to external variables to the lambda expression
We have seen in previous concepts that a lambda expression is when we send an anonymous function directly to a higher-order function. Within the lambda function, we can a...
Read more Lesson 6: What is OnPage SEO – Website SEO Tutorial
OnPage Optimization is concerned with all SEO technical aspects that relate to the content or the underlying technology and programming of the website to be optimized. Bo...
Read more PHP Lesson 25 – Constant – PHP Tutorials
The value of a constant is, unlike a variable, no longer changeable once it has been defined. This is useful, for example, to define fixed, immutable values, such as the...
Read more Lesson 49: – Package and Import – kotlin Programming language
The packages allow us to group classes, functions, objects, constants, etc. In a namespace for ease of use and maintenance. The packages group functionalities on a specif...
Read more Lesson 27: Class collaboration in Kotlin Language
Normally a problem solved with the methodology of object oriented programming does not involve a single class, but there are many classes that interact and communicate. W...
Read more Lesson 36: Article Links – Website SEO Tutorial
As the name suggests, article links come from articles or contributions from blogs or news sites. The article link must be in the flow text of the article, it is not enou...
Read more Lesson 28: Possible transformations – Free SEO Tutorial
Similar to hubpages, there are also specific patterns for different types of websites for internal linking. The SEO principle ” Users first ” also applies her...
Read more PHP Lesson 10 – Comparison operators
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...
Read more Lesson 58: User Signals – Pages / session – Website SEO Tutorial
This metric shows how many pages are viewed on average per session and is a good indicator of the quality of a web page and its internal linking. Naturally, the number of...
Read more Lesson 50: User signals – Bounce Bots – Website SEO Tutorial
Bounce bots represent a different kind of black-hat search engine optimization. While private blog networks aim to better position their own website in the search results...
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